{"id":547,"date":"2022-10-14T10:50:48","date_gmt":"2022-10-14T13:50:48","guid":{"rendered":"https:\/\/www.blogs.unicamp.br\/umoceano\/?p=547"},"modified":"2022-10-14T10:50:48","modified_gmt":"2022-10-14T13:50:48","slug":"microplasticos","status":"publish","type":"post","link":"https:\/\/www.blogs.unicamp.br\/umoceano\/2022\/10\/14\/microplasticos\/","title":{"rendered":"Polui\u00e7\u00e3o de micropl\u00e1sticos no oceano exige substitui\u00e7\u00e3o de materiais para mitigar impactos"},"content":{"rendered":"\n<p class=\" eplus-wrapper\"><a href=\"https:\/\/doi.org\/10.21577\/0100-4042.20170870\">Artigo<\/a> publicado na \u00faltima edi\u00e7\u00e3o da revista cient\u00edfica <em>Qu\u00edmica Nova<\/em> relata o impacto ambiental dos micropl\u00e1sticos, respons\u00e1veis pela polui\u00e7\u00e3o por meio da degrada\u00e7\u00e3o de res\u00edduos pl\u00e1sticos que chegam no oceano e rios, ou micropart\u00edculas com menos de cinco mil\u00edmetros (&lt;5mm) usadas na ind\u00fastria cosm\u00e9tica e que n\u00e3o se dissolvem na \u00e1gua, e s\u00e3o prejudiciais ao oceano e \u00e0 vida aqu\u00e1tica. Os autores enfatizam a import\u00e2ncia de entendermos os impactos para mitigar seus efeitos no ambiente, o que exige mudan\u00e7a no consumo.<\/p>\n\n\n\n<p class=\" eplus-wrapper\">Segundo os autores do artigo de Eduardo Ferreira Molina, da Universidade de Franca, e equipe, micropl\u00e1sticos podem ser designados como prim\u00e1rios &#8211; part\u00edculas que s\u00e3o intencionalmente desenvolvidas como part\u00edculas de pl\u00e1stico de tamanho micro usado em formula\u00e7\u00f5es cosm\u00e9ticas como microesferas ou secund\u00e1rios &#8211; detritos de materiais pl\u00e1sticos que sofrem decomposi\u00e7\u00e3o causada pela radia\u00e7\u00e3o de raios ultra-violeta (UV) estresse mec\u00e2nico (ondas oce\u00e2nicas) e a\u00e7\u00e3o do vento.<\/p>\n\n\n\n<p class=\" eplus-wrapper\"><\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized eplus-wrapper\"><img fetchpriority=\"high\" decoding=\"async\" src=\"https:\/\/www.blogs.unicamp.br\/umoceano\/wp-content\/uploads\/sites\/278\/2022\/10\/Captura-de-Tela-2022-10-14-a\u0300s-10.29.16.png\" alt=\"\" class=\"wp-image-549\" width=\"468\" height=\"488\" \/><figcaption>Esquema explicativo sobre principais pl\u00e1sticos presentes <br>no oceano e degrada\u00e7\u00e3o do pl\u00e1stico no meio ambiente at\u00e9 <br>chegar nos organismos e seres vivos. Cr\u00e9dito: Vargas et al., 2022.<\/figcaption><\/figure>\n\n\n\n<p class=\" eplus-wrapper\">O artigo d\u00e1 uma vis\u00e3o geral sobre pl\u00e1sticos e micropl\u00e1sticos, que s\u00e3o usados \u200b\u200bprincipalmente em produtos de higiene pessoal e cosm\u00e9ticos, como esmaltes, maquiagens e produtos com brilho (glitter). Al\u00e9m disso, os pesquisadores demonstraram alguns dos principais problemas que os materiais \u00e0 base de micropl\u00e1sticos podem causar na vida aqu\u00e1tica, levando a um problema de sa\u00fade humana, atrav\u00e9s de uma revis\u00e3o da literatura.<\/p>\n\n\n\n<h4 class=\"eplus-wrapper wp-block-heading\"><strong>Um oceano de micropl\u00e1sticos<\/strong><\/h4>\n\n\n\n<p class=\" eplus-wrapper\">O pl\u00e1stico \u00e9 o tipo de res\u00edduo mais comum encontrado no oceano. Segundo pesquisa feita pela organiza\u00e7\u00e3o n\u00e3o governamental World Wide Fund for Nature em 2019, o volume desse res\u00edduo encontrado anualmente no oceano \u00e9 de 10 milh\u00f5es de toneladas. O Brasil \u00e9 o 4\u00ba maior produtor de pl\u00e1stico no mundo, produzindo em m\u00e9dia 11 milh\u00f5es de toneladas por ano.<\/p>\n\n\n\n<p class=\" eplus-wrapper\">Esse problema ambiental, no qual afeta todo o ecossistema marinho e organismos aqu\u00e1ticos, v\u00eam atraindo a aten\u00e7\u00e3o de pesquisadores e institui\u00e7\u00f5es ambientais na \u00faltima d\u00e9cada. Esse \u201cmonstro real\u201d, produzido em larga escala e lan\u00e7ado nos ambientes aqu\u00e1ticos, conhecido como micropl\u00e1stico, v\u00eam se tornado um campo emergente de estudo nas ind\u00fastrias, universidades e centros de pesquisa.<\/p>\n\n\n\n<p class=\" eplus-wrapper\">Os autores do artigo concluem que a alta produ\u00e7\u00e3o global de pl\u00e1sticos associado ao manejo inadequado desses res\u00edduos \u00e9 o principal fator que influencia a contamina\u00e7\u00e3o do ambiente por micropl\u00e1sticos. A chamada bioacumula\u00e7\u00e3o, representa um risco potencial para a sa\u00fade humana, como mostrou um estudo da Universidade de S\u00e3o Paulo em 2021 que identificou a presen\u00e7a de fibras de micropart\u00edculas pl\u00e1sticas em tecido de pulm\u00e3o humano.<\/p>\n\n\n\n<p class=\" eplus-wrapper\"><\/p>\n\n\n\n<figure class=\"wp-block-image size-large eplus-wrapper\"><img decoding=\"async\" src=\"https:\/\/www.blogs.unicamp.br\/umoceano\/wp-content\/uploads\/sites\/278\/2022\/10\/Captura-de-Tela-2022-10-14-a\u0300s-10.29.05-1024x520.png\" alt=\"\" class=\"wp-image-548\" \/><figcaption>Micropl\u00e1sticos est\u00e3o presentes em in\u00fameros cosm\u00e9ticos, como esmaltes com brilho e maquiagens. Cr\u00e9dito: Vargas et al., 2022<\/figcaption><\/figure>\n\n\n\n<p class=\" eplus-wrapper\">Faltam pesquisas sobre os impactos ambientais de microfragmentos pl\u00e1sticos em ambientes terrestres e at\u00e9 mesmo no ecossistema aqu\u00e1tico de \u00e1gua doce. De acordo com o Atlas Esgotos do Brasil, cerca de 45% dos lares brasileiros n\u00e3o possuem coleta de esgoto e, portanto, os despejos s\u00e3o lan\u00e7ados sem tratamento pr\u00e9vio nos corpos aqu\u00e1ticos, gerando a contamina\u00e7\u00e3o de diversos organismos em diferentes n\u00edveis da cadeia alimentar. Microesferas incorporadas em formula\u00e7\u00f5es de produtos de cuidados pessoais e cosm\u00e9ticos constitu\u00eddos por polietileno e polipropileno merecem aten\u00e7\u00e3o e cuidado, enfatizam os cientistas. &#8220;Esses materiais podem ser substitu\u00eddos por esferas de origem natural, como sementes ou cascas mais resistentes. Por\u00e9m, necessitam de muita aten\u00e7\u00e3o e novos estudos para que se possa descrever melhor suas intera\u00e7\u00f5es e transportes de contaminantes t\u00f3xicos no sistema aqu\u00e1tico&#8221;, alertam os pesquisadores.<\/p>\n\n\n\n<h5 class=\"eplus-wrapper wp-block-heading\">Leia o artigo completo em:<\/h5>\n\n\n\n<p class=\" eplus-wrapper\">Julia Gabriela Matos Vargas, Vinicius Bueno da Silva, L\u00edlian Karla de Oliveira e Eduardo Ferreira Molina. <a href=\"https:\/\/doi.org\/10.21577\/0100-4042.20170870\" target=\"_blank\" rel=\"noreferrer noopener\">Micropl\u00e1sticos: uso na ind\u00fastria cosm\u00e9tica e impactos no ambiente aqu\u00e1tico<\/a>. Quim. Nova, 45(6): 705-711, 2022.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Artigo publicado na \u00faltima edi\u00e7\u00e3o da revista cient\u00edfica Qu\u00edmica Nova relata o impacto ambiental dos micropl\u00e1sticos, respons\u00e1veis pela polui\u00e7\u00e3o por meio da degrada\u00e7\u00e3o de res\u00edduos pl\u00e1sticos que chegam no oceano e rios, ou micropart\u00edculas com menos de cinco mil\u00edmetros (&lt;5mm) usadas na ind\u00fastria cosm\u00e9tica e que n\u00e3o se dissolvem na [&hellip;]<\/p>\n","protected":false},"author":691,"featured_media":548,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_eb_attr":"","_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"pgc_sgb_lightbox_settings":"","_vp_format_video_url":"","_vp_image_focal_point":[],"footnotes":""},"categories":[5],"tags":[18,22,27,43,53,54],"class_list":["post-547","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ciencia-em-gotas","tag-biologia-marinha","tag-catedra-do-oceano","tag-decada-do-oceano","tag-microplasticos","tag-poluicao","tag-poluicaomarinha"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - 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