{"id":3297,"date":"2026-03-27T10:45:38","date_gmt":"2026-03-27T14:45:38","guid":{"rendered":"https:\/\/dev26.lecowebtest.com\/news\/\/"},"modified":"2026-06-12T16:46:49","modified_gmt":"2026-06-12T20:46:49","slug":"alternativas-confiaveis-ao-helio","status":"publish","type":"post","link":"https:\/\/www.leco.com\/pt\/news\/reliable-helium-alternatives\/","title":{"rendered":"Alternativas Confi\u00e1veis para H\u00e9lio em An\u00e1lises Laboratoriais"},"content":{"rendered":"<div class=\"wp-block-group is-style-leco-vertical-margin-top has-global-padding is-layout-constrained wp-container-core-group-is-layout-875e403b wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-group is-nowrap is-layout-flex wp-container-core-group-is-layout-1ffe0ea6 wp-block-group-is-layout-flex\">\n<p class=\"wp-block-paragraph\">Publicado em<\/p>\n\n\n<div style=\"line-height:1;margin-top:12px;margin-left:6px\" class=\"wp-block-post-date has-custom-1-font-size\"><time datetime=\"2026-03-27T10:45:38-04:00\">27 de mar\u00e7o de 2026<\/time><\/div><\/div>\n\n\n<h1 class=\"is-style-h2-style wp-block-post-title\">Alternativas Confi\u00e1veis para H\u00e9lio em An\u00e1lises Laboratoriais<\/h1><\/div>\n\n\n\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\"><figure class=\"is-style-rounded wp-block-post-featured-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1800\" height=\"600\" src=\"https:\/\/www.leco.com\/wp-content\/uploads\/2026\/03\/Web-Blog-Image-Helium.png\" class=\"attachment-post-thumbnail size-post-thumbnail wp-post-image\" alt=\"Navio de carga com caixotes de transporte\" style=\"object-fit:cover;\" srcset=\"https:\/\/www.leco.com\/wp-content\/uploads\/2026\/03\/Web-Blog-Image-Helium.png 1800w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/03\/Web-Blog-Image-Helium-300x100.png 300w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/03\/Web-Blog-Image-Helium-1024x341.png 1024w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/03\/Web-Blog-Image-Helium-768x256.png 768w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/03\/Web-Blog-Image-Helium-1536x512.png 1536w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/03\/Web-Blog-Image-Helium-18x6.png 18w\" sizes=\"auto, (max-width: 1800px) 100vw, 1800px\"><\/figure><\/div>\n\n\n\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-container-core-group-is-layout-1ea9787f wp-block-group-is-layout-constrained\" style=\"margin-top:48px\">\n<div class=\"leco-share-article align-left wp-block-create-block-leco-share-article\">\n\t<div class=\"share-article-wrapper\">\n\t\t<button class=\"share-article-button\" data-url=\"https:\/\/www.leco.com\/pt\/news\/reliable-helium-alternatives\/\" aria-label=\"Compartilhar artigo\">\n\t\t\tCompartilhar artigo\t\t<\/button>\n\t\t<span class=\"share-article-copied\" aria-live=\"polite\" aria-atomic=\"true\">\n\t\t\tLink do artigo copiado\t\t<\/span>\n\t<\/div>\n<\/div>\n\n\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\" style=\"margin-top:0\">\n<hr class=\"wp-block-separator has-text-color has-sl-1-color has-alpha-channel-opacity has-sl-1-background-color has-background has-base-100-color has-base-100-background-color is-style-default\" style=\"margin-top:60px;margin-bottom:60px\">\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-container-core-group-is-layout-1ea9787f wp-block-group-is-layout-constrained\" style=\"margin-top:48px\">\n<p class=\"wp-block-paragraph\" style=\"padding-bottom:var(--wp--preset--spacing--60)\">Os laborat\u00f3rios que dependem do g\u00e1s h\u00e9lio est\u00e3o enfrentando uma grave crise\u2026 a menos que possuam instrumentos LECO. Devido ao conflito militar no Oriente M\u00e9dio, a Cidade Industrial de Ras Laffan, no Catar \u2014 o maior centro de produ\u00e7\u00e3o de h\u00e9lio do mundo, respons\u00e1vel por um ter\u00e7o da produ\u00e7\u00e3o global \u2014, interrompeu suas opera\u00e7\u00f5es. Para piorar a situa\u00e7\u00e3o, o Estreito de Ormuz, a rota mar\u00edtima usada para exportar h\u00e9lio, tamb\u00e9m foi fechado, o que significa que at\u00e9 mesmo os cont\u00eaineres pr\u00e9-preenchidos com h\u00e9lio est\u00e3o retidos, sem uma rota vi\u00e1vel para chegar aos clientes. Naturalmente, o pre\u00e7o do h\u00e9lio subiu drasticamente; a maioria dos pre\u00e7os \u00e0 vista dobrou. Uma grave escassez se aproxima, j\u00e1 que o mundo agora precisa operar com cerca de 5,2 milh\u00f5es de metros c\u00fabicos a menos de h\u00e9lio por m\u00eas.<\/p>\n\n\n\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\" style=\"padding-bottom:var(--wp--preset--spacing--70)\">\n<h2 class=\"wp-block-heading is-style-h2-style\">Por que o custo e o suprimento de h\u00e9lio importam para os laborat\u00f3rios\u00a0<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Embora muitas pessoas possam reconhecer o h\u00e9lio como o g\u00e1s que enche bal\u00f5es de festa, ele desempenha um papel fundamental em assuntos muito mais s\u00e9rios. O h\u00e9lio possui propriedades \u00fanicas, como um ponto de ebuli\u00e7\u00e3o extremamente baixo, in\u00e9rcia e alta condutividade t\u00e9rmica, o que o torna indispens\u00e1vel em v\u00e1rias aplica\u00e7\u00f5es de alta tecnologia.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Por exemplo, laborat\u00f3rios de pesquisa podem usar h\u00e9lio como g\u00e1s de arraste ao realizar an\u00e1lises elementares ou cromatografia a g\u00e1s acoplada \u00e0 espectrometria de massas, que \u00e9 usada para separar e identificar compostos qu\u00edmicos em amostras. Mas os laborat\u00f3rios de pesquisa s\u00e3o frequentemente financificados pelo governo e operam sob or\u00e7amentos rigorosos, de modo que o aumento no pre\u00e7o do h\u00e9lio pode significar que os laborat\u00f3rios tenham que pausar suas pesquisas at\u00e9 que tudo volte ao controle, o que pode levar meses ou mais. At\u00e9 mesmo laborat\u00f3rios bem financiados podem sofrer se a oferta estiver simplesmente escassa demais para equipar o laborat\u00f3rio com o que eles precisam, j\u00e1 que os usos m\u00e9dicos recebem prioridade m\u00e1xima. Isso pode ter um impacto s\u00e9rio na precis\u00e3o e na conformidade com os m\u00e9todos regulamentados.<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\" style=\"padding-bottom:var(--wp--preset--spacing--70)\">\n<h2 class=\"wp-block-heading is-style-h2-style\">As Consequ\u00eancias V\u00e3o Mais Longe<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Quando o h\u00e9lio se torna indispon\u00edvel ou proibitivamente caro, os efeitos em cadeia s\u00e3o imediatos e de longo alcance. Ele afeta muito mais do que apenas bal\u00f5es e laborat\u00f3rios de pesquisa:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Diagn\u00f3sticos M\u00e9dicos Atrasados<\/strong>As m\u00e1quinas de resson\u00e2ncia magn\u00e9tica, que dependem de h\u00e9lio para resfriar seus \u00edm\u00e3s supercondutores, podem ser desativadas, atrasando exames essenciais.<\/li>\n\n\n\n<li><strong>Gargalos de Semicondutores<\/strong>A escassez de chips pode se piorar, impactando desde smartphones at\u00e9 ve\u00edculos el\u00e9tricos e infraestrutura de IA.<\/li>\n\n\n\n<li><strong>Disrup\u00e7\u00e3o Industrial<\/strong>A soldagem, a ind\u00fastria aeroespacial e a fabrica\u00e7\u00e3o de fibras \u00f3pticas enfrentam custos crescentes e potenciais paralisa\u00e7\u00f5es na produ\u00e7\u00e3o.<\/li>\n<\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\">\n<h2 class=\"wp-block-heading is-style-h2-style\">A solu\u00e7\u00e3o da LECO: instrumentos que n\u00e3o dependem de h\u00e9lio<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Em meio a essa crise iminente, a LECO oferece uma solu\u00e7\u00e3o pr\u00e1tica e com vis\u00e3o de futuro. Esta \u00e9 a quinta grande crise de abastecimento de h\u00e9lio desde 2006, e \u00e9 prov\u00e1vel que haja outras depois desta. O abastecimento de h\u00e9lio est\u00e1 concentrado em apenas algumas regi\u00f5es, o que significa que, sempre que houver uma interrup\u00e7\u00e3o em uma delas, isso pode causar um grande impacto no setor. \u00c9 por isso que projetamos nossos inovadores instrumentos anal\u00edticos para operarem utilizando gases portadores alternativos.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Dependendo do instrumento, gases alternativos como nitrog\u00eanio, arg\u00f4nio ou hidrog\u00eanio podem ser usados no lugar do h\u00e9lio. Esses gases s\u00e3o abundantes, econ\u00f4micos e menos propensos \u00e0 volatilidade geopol\u00edtica que afeta as cadeias de suprimento de h\u00e9lio.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">As op\u00e7\u00f5es sem h\u00e9lio da LECO garantem que as opera\u00e7\u00f5es permane\u00e7am em funcionamento, sejam eficientes e estejam preparadas para o futuro, em um mundo em que o h\u00e9lio est\u00e1 se tornando cada vez mais escasso e caro. Essa flexibilidade n\u00e3o \u00e9 mais um luxo \u2014 \u00e9 uma necessidade. Se o seu laborat\u00f3rio ou instala\u00e7\u00e3o est\u00e1 sentindo a press\u00e3o da escassez de h\u00e9lio, agora \u00e9 a hora de explorar alternativas. Esta n\u00e3o \u00e9 a primeira escassez de h\u00e9lio, e n\u00e3o ser\u00e1 a \u00faltima. O seu laborat\u00f3rio est\u00e1 preparado?<\/p>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-container-core-group-is-layout-1ea9787f wp-block-group-is-layout-constrained\" style=\"margin-top:48px\">\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\" style=\"margin-top:0\">\n<hr class=\"wp-block-separator has-text-color has-sl-1-color has-alpha-channel-opacity has-sl-1-background-color has-background has-base-100-color has-base-100-background-color is-style-default\" style=\"margin-top:60px;margin-bottom:60px\">\n<\/div>\n\n\n\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\">\n<h2 class=\"wp-block-heading\">Instrumentos LECO compat\u00edveis com gases portadores que n\u00e3o sejam h\u00e9lio<\/h2>\n\n\n\n<div class=\"wp-block-group is-nowrap is-layout-flex wp-container-core-group-is-layout-67eca248 wp-block-group-is-layout-flex\">\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\">\n<p class=\"wp-block-paragraph\">A seguir, veja como os instrumentos LECO s\u00e3o compat\u00edveis com gases transportadores alternativos:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"#btx\">Pegasus BT e BTX GC-TOFMS<\/a><\/li>\n\n\n\n<li><a href=\"#hrt\" data-type=\"internal\" data-id=\"#hrt\">Pegasus HRT GCxGC-TOFMS<\/a><\/li>\n\n\n\n<li><a href=\"#28\" data-type=\"internal\" data-id=\"#28\">Analisadores elementares LECO 828 e 928<\/a><\/li>\n\n\n\n<li><a href=\"#36\" data-type=\"internal\" data-id=\"#36\">Analisadores de fus\u00e3o com g\u00e1s inerte LECO 736 e 836<\/a><\/li>\n\n\n\n<li><a href=\"#603\" data-type=\"internal\" data-id=\"#603\">LECO DH603 Determina\u00e7\u00e3o de hidrog\u00eanio<\/a><\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\" style=\"margin-top:0\">\n<hr class=\"wp-block-separator has-text-color has-sl-1-color has-alpha-channel-opacity has-sl-1-background-color has-background has-base-100-color has-base-100-background-color is-style-default\" style=\"margin-top:60px;margin-bottom:60px\">\n<\/div>\n\n\n\n<div id=\"btx\" class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\">\n<h3 class=\"wp-block-heading\">Pegasus BT e BTX<\/h3>\n\n\n\n<figure class=\"wp-block-image size-large is-style-rounded-full-width\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/www.leco.com\/wp-content\/uploads\/2026\/03\/laboratory-scientist-placing-sample-leco-pegasus-btx-gcms-1024x576.webp\" alt=\"Cientista carrega amostra no autoloader do gc-ms\" class=\"wp-image-3124\" srcset=\"https:\/\/www.leco.com\/wp-content\/uploads\/2026\/03\/laboratory-scientist-placing-sample-leco-pegasus-btx-gcms-1024x576.webp 1024w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/03\/laboratory-scientist-placing-sample-leco-pegasus-btx-gcms-300x169.webp 300w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/03\/laboratory-scientist-placing-sample-leco-pegasus-btx-gcms-768x432.webp 768w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/03\/laboratory-scientist-placing-sample-leco-pegasus-btx-gcms-18x10.webp 18w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/03\/laboratory-scientist-placing-sample-leco-pegasus-btx-gcms.webp 1280w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Os modelos Pegasus BT, juntamente com o Pegasus BTX, s\u00e3o compat\u00edveis com h\u00e9lio ou hidrog\u00eanio como g\u00e1s portador. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Os modelos BT requerem um kit de adapta\u00e7\u00e3o. O desempenho com hidrog\u00eanio \u00e9 equivalente ao do h\u00e9lio. A s\u00e9rie Pegasus BT atende a todas as especifica\u00e7\u00f5es de sensibilidade com qualquer um dos dois gases.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Os modelos BTX foram projetados para permitir a transi\u00e7\u00e3o cont\u00ednua entre h\u00e9lio e hidrog\u00eanio. A s\u00e9rie BTX Pegasus mant\u00e9m a sensibilidade em n\u00edveis de tra\u00e7os tanto com g\u00e1s portador de h\u00e9lio quanto de hidrog\u00eanio, uma capacidade rara em GC-MS. N\u00e3o s\u00e3o necess\u00e1rias altera\u00e7\u00f5es de hardware al\u00e9m da configura\u00e7\u00e3o padr\u00e3o.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Saiba mais sobre o hidrog\u00eanio como g\u00e1s portador nos GC-TOFMS de bancada Pegasus BT e BTX:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Pegasus BT: <a href=\"https:\/\/www.leco.com\/pt\/documentos\/203-821-651\/\" data-type=\"document\" data-id=\"1058\">An\u00e1lise de qualidade de \u00f3leos essenciais de melaleuca<\/a><\/li>\n\n\n\n<li style=\"line-height:2\">Pegasus BTX: <a href=\"https:\/\/www.leco.com\/pt\/documentos\/203-821-694\/\" data-type=\"document\" data-id=\"1099\">An\u00e1lise de \u00f3leos essenciais de gengibre<\/a><\/li>\n<\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\" style=\"margin-top:0\">\n<hr class=\"wp-block-separator has-text-color has-sl-1-color has-alpha-channel-opacity has-sl-1-background-color has-background has-base-100-color has-base-100-background-color is-style-default\" style=\"margin-top:60px;margin-bottom:60px\">\n<\/div>\n\n\n\n<div id=\"hrt\" class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\">\n<h3 class=\"wp-block-heading\">Pegasus HRT<\/h3>\n\n\n\n<figure class=\"wp-block-image size-large is-style-rounded-full-width\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/www.leco.com\/wp-content\/uploads\/2026\/03\/leco-pegasus-hrt-high-resolution-gc-tof-ms-1024x576.webp\" alt=\"LECO Pegasus GC-TOF-MS de alta resolu\u00e7\u00e3o\" class=\"wp-image-3264\" srcset=\"https:\/\/www.leco.com\/wp-content\/uploads\/2026\/03\/leco-pegasus-hrt-high-resolution-gc-tof-ms-1024x576.webp 1024w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/03\/leco-pegasus-hrt-high-resolution-gc-tof-ms-300x169.webp 300w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/03\/leco-pegasus-hrt-high-resolution-gc-tof-ms-768x432.webp 768w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/03\/leco-pegasus-hrt-high-resolution-gc-tof-ms-18x10.webp 18w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/03\/leco-pegasus-hrt-high-resolution-gc-tof-ms.webp 1280w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Os modelos HRT da Pegasus s\u00e3o compat\u00edveis com o hidrog\u00eanio como g\u00e1s portador, assim como com o h\u00e9lio.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Devido \u00e0 inflamabilidade do hidrog\u00eanio, devem ser seguidos rigorosos protocolos de seguran\u00e7a. O uso de hidrog\u00eanio n\u00e3o \u00e9 recomendado em instrumentos e configura\u00e7\u00f5es onde o g\u00e1s possa se acumular (por exemplo, tubos de voo verticais e muito longos). <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Os instrumentos HRT da Pegasus utilizam a tecnologia Folded Flight Path, eliminando essa preocupa\u00e7\u00e3o.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Leia sobre o hidrog\u00eanio como g\u00e1s transportador nos GC-TOF-MS de alta resolu\u00e7\u00e3o Pegasus HRT:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Pegasus HRT4D: <a href=\"https:\/\/www.leco.com\/pt\/documentos\/sa-asms23-lpss-310\/\" data-type=\"document\" data-id=\"3012\">An\u00e1lise por CG-EM com G\u00e1s de Arraste Hidrog\u00eanio<\/a><\/li>\n<\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\" style=\"margin-top:0\">\n<hr class=\"wp-block-separator has-text-color has-sl-1-color has-alpha-channel-opacity has-sl-1-background-color has-background has-base-100-color has-base-100-background-color is-style-default\" style=\"margin-top:60px;margin-bottom:60px\">\n<\/div>\n\n\n\n<div id=\"28\" class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\">\n<h3 class=\"wp-block-heading\">S\u00e9ries 828 e 928<\/h3>\n\n\n\n<figure class=\"wp-block-image size-full is-style-rounded-full-width\"><img loading=\"lazy\" decoding=\"async\" width=\"1280\" height=\"720\" src=\"https:\/\/www.leco.com\/wp-content\/uploads\/2026\/03\/leco-cn928-elemental-analyzer.jpg\" alt=\"T\u00e9cnico de laborat\u00f3rio utilizando o analisador de carbono e nitrog\u00eanio LECO S\u00e9rie 928\" class=\"wp-image-2635\" srcset=\"https:\/\/www.leco.com\/wp-content\/uploads\/2026\/03\/leco-cn928-elemental-analyzer.jpg 1280w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/03\/leco-cn928-elemental-analyzer-300x169.jpg 300w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/03\/leco-cn928-elemental-analyzer-1024x576.jpg 1024w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/03\/leco-cn928-elemental-analyzer-768x432.jpg 768w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/03\/leco-cn928-elemental-analyzer-18x10.jpg 18w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Os analisadores das s\u00e9ries LECO 828 e 928 aceitam o arg\u00f4nio como g\u00e1s transportador alternativo ao h\u00e9lio. O h\u00e9lio continua sendo a op\u00e7\u00e3o preferida para a determina\u00e7\u00e3o de nitrog\u00eanio em baixos n\u00edveis. Devido a uma pequena diferen\u00e7a de condutividade t\u00e9rmica (TCD), a opera\u00e7\u00e3o com arg\u00f4nio eleva o limite de detec\u00e7\u00e3o de nitrog\u00eanio, o que reduz ligeiramente a precis\u00e3o na faixa baixa. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A troca de tipos de g\u00e1s \u00e9 simples: atualize o m\u00e9todo e as configura\u00e7\u00f5es de fluxo \u2013 nenhuma altera\u00e7\u00e3o de hardware \u00e9 necess\u00e1ria. Os usu\u00e1rios t\u00eam a op\u00e7\u00e3o de selecionar um loop de al\u00edquota maior no m\u00e9todo de an\u00e1lise para melhorar a precis\u00e3o.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Leia sobre o uso de arg\u00f4nio como g\u00e1s de arraste na S\u00e9rie 928:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>CN928: <a href=\"https:\/\/www.leco.com\/pt\/documentos\/203-821-684\/\" data-type=\"document\" data-id=\"1089\">Determina\u00e7\u00e3o de Carbono e Nitrog\u00eanio em Negro de Fumo e Grafite<\/a><\/li>\n<\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\" style=\"margin-top:0\">\n<hr class=\"wp-block-separator has-text-color has-sl-1-color has-alpha-channel-opacity has-sl-1-background-color has-background has-base-100-color has-base-100-background-color is-style-default\" style=\"margin-top:60px;margin-bottom:60px\">\n<\/div>\n\n\n\n<div id=\"36\" class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\">\n<h3 class=\"wp-block-heading\">S\u00e9ries 736 e 836<\/h3>\n\n\n\n<figure class=\"wp-block-image size-full is-style-rounded-full-width\"><img loading=\"lazy\" decoding=\"async\" width=\"1280\" height=\"720\" src=\"https:\/\/www.leco.com\/wp-content\/uploads\/2026\/03\/leco-on836-oxygen-nitrogen-elemental-analyzer.webp\" alt=\"Analisador elementar LECO ON836 para oxig\u00eanio e nitrog\u00eanio\" class=\"wp-image-3496\" srcset=\"https:\/\/www.leco.com\/wp-content\/uploads\/2026\/03\/leco-on836-oxygen-nitrogen-elemental-analyzer.webp 1280w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/03\/leco-on836-oxygen-nitrogen-elemental-analyzer-300x169.webp 300w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/03\/leco-on836-oxygen-nitrogen-elemental-analyzer-1024x576.webp 1024w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/03\/leco-on836-oxygen-nitrogen-elemental-analyzer-768x432.webp 768w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/03\/leco-on836-oxygen-nitrogen-elemental-analyzer-18x10.webp 18w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Os analisadores de fus\u00e3o com g\u00e1s inerte LECO para oxig\u00eanio e nitrog\u00eanio em materiais inorg\u00e2nicos (por exemplo, os modelos ON736 e ON836) utilizam tradicionalmente o h\u00e9lio como g\u00e1s transportador para o TCD preferencial na medi\u00e7\u00e3o de nitrog\u00eanio. Com o arg\u00f4nio, a precis\u00e3o na medi\u00e7\u00e3o de baixos n\u00edveis de nitrog\u00eanio \u00e9 ligeiramente reduzida.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Os modelos 736 e 836 podem operar com arg\u00f4nio, desde que o TCD de dupla finalidade esteja instalado. Uma vez adicionado, a mudan\u00e7a de h\u00e9lio para arg\u00f4nio \u00e9 uma altera\u00e7\u00e3o de configura\u00e7\u00e3o \u00fanica. Ambos os gases s\u00e3o suportados no software Cornerstone (selecione atrav\u00e9s da configura\u00e7\u00e3o \u201cGas Type\u201d).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ao usar arg\u00f4nio, o forno opera a uma temperatura mais alta, produzindo mais fuligem. \u00c9 necess\u00e1ria uma manuten\u00e7\u00e3o mais frequente (como trocas de filtro e limpeza).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Leia sobre o uso de arg\u00f4nio como g\u00e1s de arraste na S\u00e9rie 836:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>ONH836: <a href=\"https:\/\/www.leco.com\/pt\/documentos\/203-821-601\/\" data-type=\"document\" data-id=\"1009\">Comparando os gases de arraste arg\u00f4nio e h\u00e9lio para analisar ligas met\u00e1licas<\/a><\/li>\n<\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\" style=\"margin-top:0\">\n<hr class=\"wp-block-separator has-text-color has-sl-1-color has-alpha-channel-opacity has-sl-1-background-color has-background has-base-100-color has-base-100-background-color is-style-default\" style=\"margin-top:60px;margin-bottom:60px\">\n<\/div>\n\n\n\n<div id=\"603\" class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\">\n<h3 class=\"wp-block-heading\">DH603<\/h3>\n\n\n\n<figure class=\"wp-block-image size-full is-style-rounded-full-width\"><img loading=\"lazy\" decoding=\"async\" width=\"1280\" height=\"720\" src=\"https:\/\/www.leco.com\/wp-content\/uploads\/2026\/03\/leco-dh603-hydrogen-determination.webp\" alt=\"LECO DH603 Determina\u00e7\u00e3o de hidrog\u00eanio\" class=\"wp-image-3382\" srcset=\"https:\/\/www.leco.com\/wp-content\/uploads\/2026\/03\/leco-dh603-hydrogen-determination.webp 1280w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/03\/leco-dh603-hydrogen-determination-300x169.webp 300w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/03\/leco-dh603-hydrogen-determination-1024x576.webp 1024w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/03\/leco-dh603-hydrogen-determination-768x432.webp 768w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/03\/leco-dh603-hydrogen-determination-18x10.webp 18w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">O LECO DH603 mede o hidrog\u00eanio difus\u00edvel e residual em metais por meio da extra\u00e7\u00e3o a quente. Ele n\u00e3o utiliza h\u00e9lio como g\u00e1s portador durante a an\u00e1lise. O nitrog\u00eanio \u00e9 utilizado como g\u00e1s de purga e g\u00e1s portador no sistema TCD do DH603.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Uma pequena dose de h\u00e9lio \u00e9 usada apenas para calibra\u00e7\u00e3o e verifica\u00e7\u00f5es do sistema, para introduzir uma quantidade conhecida de hidrog\u00eanio por meio de uma mistura de h\u00e9lio e hidrog\u00eanio.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Durante a opera\u00e7\u00e3o rotineira, o forno \u00e9 purgado com nitrog\u00eanio e qualquer hidrog\u00eanio liberado da amostra \u00e9 transportado para um TCD que faz a refer\u00eancia em rela\u00e7\u00e3o ao fundo de nitrog\u00eanio. Este design evita totalmente a presen\u00e7a de g\u00e1s inflam\u00e1vel no instrumento.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Leia sobre como o DH603 opera:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>DH603: <a href=\"https:\/\/www.leco.com\/pt\/documentos\/203-821-376\/\" data-type=\"document\" data-id=\"840\">Determina\u00e7\u00e3o de hidrog\u00eanio em amostras de a\u00e7o usando o DH603<\/a><\/li>\n<\/ul>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-container-core-group-is-layout-7d5f9c92 wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\" style=\"margin-top:0\">\n<hr class=\"wp-block-separator has-text-color has-sl-1-color has-alpha-channel-opacity has-sl-1-background-color has-background has-base-100-color has-base-100-background-color is-style-default\" style=\"margin-top:60px;margin-bottom:60px\">\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading is-style-h4-style\">Not\u00edcias relacionadas<\/h2>\n\n\n\n<div class=\"wp-block-query is-layout-flow wp-block-query-is-layout-flow\"><ul class=\"columns-3 wp-block-post-template is-layout-grid wp-container-core-post-template-is-layout-1d17308c wp-block-post-template-is-layout-grid\"><li class=\"wp-block-post post-4219 post type-post status-publish format-standard has-post-thumbnail hentry category-news instrument-model-58 core-analysis-type-carbon application-type-environmental application-type-soil-analysis product-line-elemental-analysis\">\n\n<div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><figure style=\"aspect-ratio:16\/9\" class=\"wp-block-post-featured-image\"><a href=\"https:\/\/www.leco.com\/pt\/news\/role-of-toc-in-regenerative-agriculture\/\" target=\"_self\"><img loading=\"lazy\" decoding=\"async\" width=\"1280\" height=\"720\" src=\"https:\/\/www.leco.com\/wp-content\/uploads\/2026\/08\/two-farmers-in-red-discuss-soil.webp\" class=\"attachment-post-thumbnail size-post-thumbnail wp-post-image\" alt=\"A Import\u00e2ncia da An\u00e1lise de Carbono Org\u00e2nico Total no Solo na Agricultura Regenerativa\" style=\"width:100%;height:100%;object-fit:cover;\" srcset=\"https:\/\/www.leco.com\/wp-content\/uploads\/2026\/08\/two-farmers-in-red-discuss-soil.webp 1280w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/08\/two-farmers-in-red-discuss-soil-300x169.webp 300w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/08\/two-farmers-in-red-discuss-soil-1024x576.webp 1024w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/08\/two-farmers-in-red-discuss-soil-768x432.webp 768w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/08\/two-farmers-in-red-discuss-soil-18x10.webp 18w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\"><\/a><\/figure>\n\n<h4 style=\"font-style:normal;font-weight:300\" class=\"has-link-color wp-elements-25e6d450634c6f6ce866507b40ad7ad3 wp-block-post-title has-text-color has-dm-8-color has-medium-font-size has-rothek-font-family\"><a href=\"https:\/\/www.leco.com\/pt\/news\/role-of-toc-in-regenerative-agriculture\/\" target=\"_self\">A Import\u00e2ncia da An\u00e1lise de Carbono Org\u00e2nico Total no Solo na Agricultura Regenerativa<\/a><\/h4>\n\n<div class=\"wp-block-post-date\"><time datetime=\"2026-08-05T08:16:00-04:00\">5 de agosto de 2026<\/time><\/div><\/div>\n\n<\/li><li class=\"wp-block-post post-7015 post type-post status-publish format-standard has-post-thumbnail hentry category-news\">\n\n<div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><figure style=\"aspect-ratio:16\/9\" class=\"wp-block-post-featured-image\"><a href=\"https:\/\/www.leco.com\/pt\/news\/thank-you-2026-summer-interns\/\" target=\"_self\"><img loading=\"lazy\" decoding=\"async\" width=\"1800\" height=\"660\" src=\"https:\/\/www.leco.com\/wp-content\/uploads\/2026\/07\/Intern-Day-Photo-2026.jpg\" class=\"attachment-post-thumbnail size-post-thumbnail wp-post-image\" alt=\"Obrigado, Estagi\u00e1rios de Ver\u00e3o de 2026!\" style=\"width:100%;height:100%;object-fit:cover;\" srcset=\"https:\/\/www.leco.com\/wp-content\/uploads\/2026\/07\/Intern-Day-Photo-2026.jpg 1800w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/07\/Intern-Day-Photo-2026-300x110.jpg 300w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/07\/Intern-Day-Photo-2026-1024x375.jpg 1024w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/07\/Intern-Day-Photo-2026-768x282.jpg 768w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/07\/Intern-Day-Photo-2026-1536x563.jpg 1536w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/07\/Intern-Day-Photo-2026-18x7.jpg 18w\" sizes=\"auto, (max-width: 1800px) 100vw, 1800px\"><\/a><\/figure>\n\n<h4 style=\"font-style:normal;font-weight:300\" class=\"has-link-color wp-elements-25e6d450634c6f6ce866507b40ad7ad3 wp-block-post-title has-text-color has-dm-8-color has-medium-font-size has-rothek-font-family\"><a href=\"https:\/\/www.leco.com\/pt\/news\/thank-you-2026-summer-interns\/\" target=\"_self\">Obrigado, Estagi\u00e1rios de Ver\u00e3o de 2026!<\/a><\/h4>\n\n<div class=\"wp-block-post-date\"><time datetime=\"2026-07-30T14:00:00-04:00\">30 de julho de 2026<\/time><\/div><\/div>\n\n<\/li><li class=\"wp-block-post post-6807 post type-post status-publish format-standard has-post-thumbnail hentry category-news instrument-model-60 core-analysis-type-sulfur application-type-high-performance-materials application-type-metals-ores product-line-elemental-analysis\">\n\n<div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><figure style=\"aspect-ratio:16\/9\" class=\"wp-block-post-featured-image\"><a href=\"https:\/\/www.leco.com\/pt\/news\/sulfur-and-superalloys-the-844-series\/\" target=\"_self\"><img loading=\"lazy\" decoding=\"async\" width=\"1800\" height=\"600\" src=\"https:\/\/www.leco.com\/wp-content\/uploads\/2026\/07\/underside-of-jet-engine-commercial-aircraft.png\" class=\"attachment-post-thumbnail size-post-thumbnail wp-post-image\" alt=\"Superligas e Enxofre: Mesmo Tra\u00e7os Podem Ser Prejudiciais\" style=\"width:100%;height:100%;object-fit:cover;\" srcset=\"https:\/\/www.leco.com\/wp-content\/uploads\/2026\/07\/underside-of-jet-engine-commercial-aircraft.png 1800w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/07\/underside-of-jet-engine-commercial-aircraft-300x100.png 300w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/07\/underside-of-jet-engine-commercial-aircraft-1024x341.png 1024w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/07\/underside-of-jet-engine-commercial-aircraft-768x256.png 768w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/07\/underside-of-jet-engine-commercial-aircraft-1536x512.png 1536w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/07\/underside-of-jet-engine-commercial-aircraft-18x6.png 18w\" sizes=\"auto, (max-width: 1800px) 100vw, 1800px\"><\/a><\/figure>\n\n<h4 style=\"font-style:normal;font-weight:300\" class=\"has-link-color wp-elements-25e6d450634c6f6ce866507b40ad7ad3 wp-block-post-title has-text-color has-dm-8-color has-medium-font-size has-rothek-font-family\"><a href=\"https:\/\/www.leco.com\/pt\/news\/sulfur-and-superalloys-the-844-series\/\" target=\"_self\">Superligas e Enxofre: Mesmo Tra\u00e7os Podem Ser Prejudiciais<\/a><\/h4>\n\n<div class=\"wp-block-post-date\"><time datetime=\"2026-07-17T11:33:01-04:00\">17 de julho de 2026<\/time><\/div><\/div>\n\n<\/li><\/ul><\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>With global helium supplies shrinking and prices doubling, lab continuity is at risk. Learn how LECO instruments offer seamless transitions to alternative carrier gases without sacrificing analytical precision.<\/p>","protected":false},"author":9,"featured_media":3916,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"instrument-model":[55,57,59,61,70,92,90,95],"core-analysis-type":[20,27,24,23],"application-type":[9,37,35],"product-line":[14,11],"class_list":["post-3297","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","instrument-model-55","instrument-model-57","instrument-model-59","instrument-model-61","instrument-model-dh603","instrument-model-bt","instrument-model-btx","instrument-model-hrt4d","core-analysis-type-carbon","core-analysis-type-gc-mass-spectrometry","core-analysis-type-hydrogen","core-analysis-type-nitrogen","application-type-aroma-flavor-fragrance","application-type-metals-ores","application-type-protein-analysis","product-line-elemental-analysis","product-line-mass-spectrometry"],"_links":{"self":[{"href":"https:\/\/www.leco.com\/pt\/wp-json\/wp\/v2\/posts\/3297","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.leco.com\/pt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.leco.com\/pt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.leco.com\/pt\/wp-json\/wp\/v2\/users\/9"}],"replies":[{"embeddable":true,"href":"https:\/\/www.leco.com\/pt\/wp-json\/wp\/v2\/comments?post=3297"}],"version-history":[{"count":0,"href":"https:\/\/www.leco.com\/pt\/wp-json\/wp\/v2\/posts\/3297\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.leco.com\/pt\/wp-json\/wp\/v2\/media\/3916"}],"wp:attachment":[{"href":"https:\/\/www.leco.com\/pt\/wp-json\/wp\/v2\/media?parent=3297"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.leco.com\/pt\/wp-json\/wp\/v2\/categories?post=3297"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.leco.com\/pt\/wp-json\/wp\/v2\/tags?post=3297"},{"taxonomy":"instrument-model","embeddable":true,"href":"https:\/\/www.leco.com\/pt\/wp-json\/wp\/v2\/instrument-model?post=3297"},{"taxonomy":"core-analysis-type","embeddable":true,"href":"https:\/\/www.leco.com\/pt\/wp-json\/wp\/v2\/core-analysis-type?post=3297"},{"taxonomy":"application-type","embeddable":true,"href":"https:\/\/www.leco.com\/pt\/wp-json\/wp\/v2\/application-type?post=3297"},{"taxonomy":"product-line","embeddable":true,"href":"https:\/\/www.leco.com\/pt\/wp-json\/wp\/v2\/product-line?post=3297"}],"curies":[{"name":"bem-jogado","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}