{"id":6492,"date":"2026-07-01T15:43:12","date_gmt":"2026-07-01T19:43:12","guid":{"rendered":"https:\/\/dev26.lecowebtest.com\/news\/\/"},"modified":"2026-07-06T11:30:21","modified_gmt":"2026-07-06T15:30:21","slug":"fogos-de-artificio-e-turismo-impactam-a-qualidade-da-agua-do-lago-michigan","status":"publish","type":"post","link":"https:\/\/www.leco.com\/pt\/news\/fireworks-and-tourism-impacts-lake-michigan-water-quality\/","title":{"rendered":"Como os fogos de artif\u00edcio afetam nossos lagos?"},"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=\"2026-07-01T18:42:01.260Z\">1\u00ba de julho de 2026<\/time><\/div><\/div>\n\n\n<h1 class=\"is-style-h2-style wp-block-post-title\">Como os fogos de artif\u00edcio afetam nossos lagos?<\/h1>\n\n\n<h2 class=\"wp-block-heading is-style-h3-style\">Um Estudo sobre a Qualidade da \u00c1gua do Lago Michigan Utilizando GCxGC-HRMS<\/h2>\n<\/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=\"1280\" height=\"720\" src=\"https:\/\/www.leco.com\/wp-content\/uploads\/2026\/07\/fireworks-over-chicago-lake-michigan.webp\" class=\"attachment-post-thumbnail size-post-thumbnail wp-post-image\" alt=\"Fogos de artif\u00edcio sobre Chicago, IL (EUA), tirados do Lago Michigan\" style=\"object-fit:cover;\" srcset=\"https:\/\/www.leco.com\/wp-content\/uploads\/2026\/07\/fireworks-over-chicago-lake-michigan.webp 1280w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/07\/fireworks-over-chicago-lake-michigan-300x169.webp 300w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/07\/fireworks-over-chicago-lake-michigan-1024x576.webp 1024w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/07\/fireworks-over-chicago-lake-michigan-768x432.webp 768w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/07\/fireworks-over-chicago-lake-michigan-18x10.webp 18w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\"><\/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\/fireworks-and-tourism-impacts-lake-michigan-water-quality\/\" 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\">Enquanto os Estados Unidos da Am\u00e9rica celebram seu 250\u00ba anivers\u00e1rio, com certeza haver\u00e1 muitos fogos de artif\u00edcio iluminando o c\u00e9u neste Quatro de Julho. Os americanos celebram seu Dia da Independ\u00eancia com fogos de artif\u00edcio desde o primeiro anivers\u00e1rio da independ\u00eancia da Gr\u00e3-Bretanha, em 1777. A tradi\u00e7\u00e3o tornou-se extremamente popular ao longo dos anos, com pessoas de todas as idades reunindo-se em casas, parques, praias ou locais populares para assistir a esses pirot\u00e9cnicos iluminarem o c\u00e9u. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Quase <a href=\"https:\/\/www.americanpyro.com\/assets\/docs\/FactsandFigures\/2024\/Fireworks%20Consump.%20Figures%202000-2023.pdf\" data-type=\"link\" data-id=\"https:\/\/www.americanpyro.com\/assets\/docs\/FactsandFigures\/2024\/Fireworks%20Consump.%20Figures%202000-2023.pdf\" target=\"_blank\" rel=\"noreferrer noopener\">300 milh\u00f5es de libras de fogos de artif\u00edcio<\/a> s\u00e3o disparados todos os anos s\u00f3 nos Estados Unidos. \u00c9 comum que muitos desses fogos de artif\u00edcio sejam acesos perto de lagos, pois a fonte de \u00e1gua \u00e9 vista como um recurso de seguran\u00e7a em caso de inc\u00eandios inesperados. Ao pensarmos em quantos fogos de artif\u00edcio s\u00e3o usados em torno do Quatro de Julho, surge a pergunta: As consequ\u00eancias dos fogos de artif\u00edcio afetam a qualidade da \u00e1gua de nossos lagos?<\/p>\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\" style=\"margin-top:var(--wp--preset--spacing--2-xl)\">Acendendo o Pavio: A Prepara\u00e7\u00e3o<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Em 2018, os qu\u00edmicos da LECO decidiram responder a essa pergunta coletando amostras de \u00e1gua do Lago Michigan antes e depois das queimas de fogos. O plano era analisar os dois conjuntos de amostras para identificar altera\u00e7\u00f5es qu\u00edmicas entre eles. Se houvesse um aumento nos compostos qu\u00edmicos diretamente ligados aos fogos de artif\u00edcio, isso indicaria que os fogos de artif\u00edcio realmente t\u00eam um impacto direto na qualidade da \u00e1gua durante essa \u00e9poca festiva t\u00e3o popular.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Para conduzir a an\u00e1lise, foi utilizado um poderoso fluxo de trabalho anal\u00edtico. A microextra\u00e7\u00e3o em fase s\u00f3lida (SPME) com uma SPME Arrow ofereceu um volume de sor\u00e7\u00e3o aumentado para a amostragem eficiente de compostos vol\u00e1teis e semivol\u00e1teis. Para a an\u00e1lise, a cromatografia gasosa bidimensional abrangente (GCxGC) foi utilizada para uma separa\u00e7\u00e3o aprimorada, juntamente com a espectrometria de massa de alta resolu\u00e7\u00e3o (HRMS) para a identifica\u00e7\u00e3o precisa dos compostos. Essa abordagem n\u00e3o direcionada permitiu aos pesquisadores detectar uma ampla gama de compostos, incluindo aqueles presentes em n\u00edveis de vestigiais.<\/p>\n<\/div>\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\/07\/great-lake-beach-goers-sunbathers-summer-tourism-1024x576.webp\" alt=\"Banhistas, pessoas tomando sol e nadadores, perto de casas \u00e0 beira-mar\" class=\"wp-image-6496\" srcset=\"https:\/\/www.leco.com\/wp-content\/uploads\/2026\/07\/great-lake-beach-goers-sunbathers-summer-tourism-1024x576.webp 1024w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/07\/great-lake-beach-goers-sunbathers-summer-tourism-300x169.webp 300w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/07\/great-lake-beach-goers-sunbathers-summer-tourism-768x432.webp 768w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/07\/great-lake-beach-goers-sunbathers-summer-tourism-18x10.webp 18w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/07\/great-lake-beach-goers-sunbathers-summer-tourism.webp 1280w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\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\" style=\"margin-top:var(--wp--preset--spacing--2-xl)\">Resultados Explosivos: <br>Desafiando Nossas Suposi\u00e7\u00f5es<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Os resultados do estudo foram inesperados. Embora muitos compostos tenham sido descobertos, ficou claro que os fogos de artif\u00edcio contribu\u00edram com pouca ou nenhuma contamina\u00e7\u00e3o qu\u00edmica direta para as amostras de \u00e1gua. Embora frequentemente se assuma que os fogos de artif\u00edcio introduzem poluentes, esta an\u00e1lise n\u00e3o mostrou assinaturas qu\u00edmicas significativas diretamente ligadas a res\u00edduos pirot\u00e9cnicos sob as condi\u00e7\u00f5es estudadas.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">No entanto, o que os dados mostraram foi um aumento impressionante de compostos associados a produtos de cuidados pessoais e \u00e0 atividade humana cotidiana. Do primeiro conjunto de amostras para o segundo, os dados mostraram que mais protetor solar, repelente de insetos, condicionadores de pele e fragr\u00e2ncias haviam chegado \u00e0 \u00e1gua. Pode-se assumir que essas subst\u00e2ncias entraram na \u00e1gua \u00e0 medida que os banhistas nadavam no lago e se reuniam ao longo da costa durante o pico de movimento de feriad\u00e3o.<\/p>\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\" style=\"margin-top:var(--wp--preset--spacing--2-xl)\">O Pre\u00e7o da Verdade <br>Mudan\u00e7as Qu\u00edmicas Not\u00e1veis<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Com GCxGC-HRMS n\u00e3o direcionada via <a href=\"https:\/\/www.leco.com\/pt\/products\/pegasus-gcxgc-hrt\/\" data-type=\"link\" data-id=\"https:\/\/www.leco.com\/products\/pegasus-gcxgc-hrt\/\">Pegasus GC-<\/a><a href=\"https:\/\/www.leco.com\/pt\/instrumento\/gc-ms-hrt-de-alta-resolucao\/\" data-type=\"instrument\" data-id=\"2252\">Terapia de Reposi\u00e7\u00e3o Hormonal <\/a><a href=\"https:\/\/www.leco.com\/pt\/products\/pegasus-gcxgc-hrt\/\" data-type=\"link\" data-id=\"https:\/\/www.leco.com\/products\/pegasus-gcxgc-hrt\/\">4D<\/a> plataforma, os qu\u00edmicos conseguiram identificar compostos espec\u00edficos que aumentaram ap\u00f3s os shows de fogos de artif\u00edcio. Isso levou a descobertas significativas, como o fato de alguns compostos relacionados a protetores solares terem aumentado em impressionantes quarenta vezes a quantidade inicial documentada, e compostos de condicionamento da pele e cosm\u00e9ticos terem aumentado dez vezes. Houve tamb\u00e9m v\u00e1rios compostos relacionados a fragr\u00e2ncias que foram detectados recentemente apenas ap\u00f3s o evento. <\/p>\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\/pegasus-gc-hrt-high-resolution-tof-ms-1024x576.webp\" alt=\"LECO Pegasus GC-HRT Espectr\u00f4metro de massa de tempo de voo de alta resolu\u00e7\u00e3o\" class=\"wp-image-5956\" srcset=\"https:\/\/www.leco.com\/wp-content\/uploads\/2026\/03\/pegasus-gc-hrt-high-resolution-tof-ms-1024x576.webp 1024w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/03\/pegasus-gc-hrt-high-resolution-tof-ms-300x169.webp 300w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/03\/pegasus-gc-hrt-high-resolution-tof-ms-768x432.webp 768w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/03\/pegasus-gc-hrt-high-resolution-tof-ms-18x10.webp 18w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/03\/pegasus-gc-hrt-high-resolution-tof-ms.webp 1280w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">A detec\u00e7\u00e3o dessas mudan\u00e7as sutis exige mais do que t\u00e9cnicas convencionais. A combina\u00e7\u00e3o de GCxGC e HRMS ofereceu v\u00e1rias vantagens principais:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Separa\u00e7\u00e3o aprimorada de misturas complexas, revelando compostos que se sobreporiam em m\u00e9todos tradicionais.<\/li>\n\n\n\n<li>Excelente exatid\u00e3o de massa, permitindo o c\u00e1lculo confi\u00e1vel de f\u00f3rmulas moleculares para auxiliar na anota\u00e7\u00e3o de compostos.<\/li>\n\n\n\n<li>An\u00e1lise n\u00e3o direcionada, permitindo a detec\u00e7\u00e3o de contaminantes tanto esperados quanto desconhecidos.<\/li>\n\n\n\n<li>Compara\u00e7\u00f5es claras de antes e depois mostrando como a qu\u00edmica da \u00e1gua evolui durante eventos de alto tr\u00e1fego.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Esse n\u00edvel de percep\u00e7\u00e3o \u00e9 fundamental ao analisar amostras ambientais com composi\u00e7\u00f5es complexas e vari\u00e1veis.<\/p>\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\" style=\"margin-top:var(--wp--preset--spacing--2-xl)\">As Consequ\u00eancias: Principais Conclus\u00f5es para o Monitoramento Ambiental<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Enquanto <a href=\"https:\/\/www.bbc.com\/future\/article\/20240703-how-4-july-fireworks-pollute-the-air-and-might-damage-your-health\" target=\"_blank\" rel=\"noreferrer noopener\">os fogos de artif\u00edcio atraem aten\u00e7\u00e3o como potenciais poluentes<\/a>, este experimento descobriu que produtos de consumo como protetores solares e repelentes de insetos tamb\u00e9m t\u00eam um efeito mensur\u00e1vel. Isso n\u00e3o quer dizer que as pessoas n\u00e3o devam usar protetor solar e repelente na praia \u2014 o protetor solar \u00e9 especialmente importante para se proteger dos raios UV nocivos. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Para cientistas ambientais e \u00f3rg\u00e3os reguladores, isso indica que as estrat\u00e9gias de monitoramento devem considerar os padr\u00f5es de atividade humana e que m\u00e9todos anal\u00edticos n\u00e3o direcionados s\u00e3o essenciais para capturar mudan\u00e7as qu\u00edmicas transit\u00f3rias. Estudos n\u00e3o direcionados t\u00eam a capacidade de subverter expectativas qu\u00edmicas e oferecer uma vis\u00e3o imparcial sobre os processos ambientais subjacentes. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ao combinar instrumenta\u00e7\u00e3o de classe mundial, como a <a href=\"https:\/\/www.leco.com\/pt\/instrumento\/gc-ms-hrt-de-alta-resolucao\/\" data-type=\"instrument\" data-id=\"2252\">Pegasus GC-HRT 4D<\/a>, com quest\u00f5es ambientais do mundo real, os pesquisadores podem entender melhor n\u00e3o apenas o que est\u00e1 em nossa \u00e1gua, mas por que est\u00e1 l\u00e1.<\/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 is-style-h4-style\">Saiba mais<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Para uma an\u00e1lise t\u00e9cnica aprofundada, baixe o p\u00f4ster t\u00e9cnico: <em><a href=\"https:\/\/www.leco.com\/pt\/documentos\/lpss-264\/\" data-type=\"document\" data-id=\"6498\">De Fogos de Artif\u00edcio e Turismo: An\u00e1lise GCxGC-HRMS dos Impactos do Ver\u00e3o na Qualidade da \u00c1gua do Lago Michigan<\/a><\/em><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Visite nosso <a href=\"https:\/\/www.leco.com\/pt\/aplicativo\/ambiental\/\" data-type=\"application\" data-id=\"2055\">Central de Recursos Ambientais<\/a> para obter informa\u00e7\u00f5es sobre como a tecnologia LECO contribui para a an\u00e1lise ambiental.<\/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=\"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 is-style-h4-style\">Instrumentos Utilizados<\/h2>\n\n\n\n<div class=\"leco-card-grid-block wp-block-create-block-leco-card-grid\">\n\t<div class=\"leco-card-grid columns-2\" role=\"list\" aria-label=\"Card grid\">\n\t\t\n\t\t\t\t\t<a href=\"https:\/\/www.leco.com\/pt\/instrumento\/gc-ms-hrt-de-alta-resolucao\/\" class=\"leco-card\" role=\"listitem\" aria-label=\"Pegasus HRT Series - Click to learn more\">\n\t\t\n\t\t\t<!-- Card Image -->\n\t\t\t<div class=\"leco-card-image\" role=\"img\" aria-label=\"LECO Pegasus GC-TOF-MS de alta resolu\u00e7\u00e3o\">\n\t\t\t\t\t\t\t\t\t<img src=\"https:\/\/www.leco.com\/wp-content\/uploads\/2026\/03\/leco-pegasus-hrt-high-resolution-gc-tof-ms.webp\" 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-768x432.webp 768w, 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.webp 1280w\" sizes=\"(max-width: 768px) 100vw, (max-width: 1200px) 50vw, 371px\" alt=\"LECO Pegasus GC-TOF-MS de alta resolu\u00e7\u00e3o\" class=\"leco-card-img\" loading=\"lazy\" decoding=\"sync\">\n\t\t\t\t\t\t\t<\/div>\n\n\t\t\t<!-- Card Content -->\n\t\t\t<div class=\"leco-card-content\">\n\t\t\t\t\t\t\t\t\t<h3 class=\"leco-card-title\">\n\t\t\t\t\t\tS\u00e9rie Pegasus HRT\t\t\t\t\t<\/h3>\n\t\t\t\t\n\t\t\t\t<div class=\"leco-card-bottom\">\n\t\t\t\t\t\t\t\t\t\t\t<p class=\"leco-card-description\">\n\t\t\t\t\t\t\tCG e GCxGC-TOF-MS de Alta Resolu\u00e7\u00e3o\t\t\t\t\t\t<\/p>\n\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"leco-card-link\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t<svg class=\"leco-card-arrow\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"44\" height=\"44\" viewbox=\"0 0 44 44\" fill=\"none\" focusable=\"false\">\n\t\t\t\t\t\t\t\t<path d=\"M12.7998 22C12.7998 22.5523 13.2475 23 13.7998 23L27.3857 23L21.7998 28.5859C21.4093 28.9764 21.4093 29.6095 21.7998 30C22.1903 30.3905 22.8234 30.3905 23.2139 30L30.5068 22.7071C30.8973 22.3166 30.8973 21.6834 30.5068 21.2929L23.2139 14C22.8234 13.6095 22.1903 13.6095 21.7998 14C21.4093 14.3905 21.4093 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