{"id":16496,"date":"2024-06-10T20:01:25","date_gmt":"2024-06-10T20:01:25","guid":{"rendered":"https:\/\/www.lifescienceart.com\/?p=16496"},"modified":"2024-06-10T20:01:25","modified_gmt":"2024-06-10T20:01:25","slug":"pfas-toxic-chemicals-drinking-water","status":"publish","type":"post","link":"https:\/\/www.lifescienceart.com\/cs\/science\/environmental-science\/pfas-toxic-chemicals-drinking-water\/","title":{"rendered":"PFAS: Toxick\u00e9 l\u00e1tky v pitn\u00e9 vod\u011b"},"content":{"rendered":"<h2 class=\"wp-block-heading\">PFAS: Toxick\u00e9 chemik\u00e1lie v pitn\u00e9 vod\u011b<\/h2>\n\n<h2 class=\"wp-block-heading\">Co jsou PFAS?<\/h2>\n\n<p>PFAS neboli perfluoroalkyl a polyfluoroalkyl l\u00e1tky jsou skupinou syntetick\u00fdch chemik\u00e1li\u00ed, kter\u00e9 se po cel\u00e1 desetilet\u00ed pou\u017e\u00edvaj\u00ed v \u0161irok\u00e9 \u0161k\u00e1le v\u00fdrobk\u016f, v\u010detn\u011b obal\u016f potravin, opalovac\u00edch kr\u00e9m\u016f, nep\u0159ilnav\u00e9ho n\u00e1dob\u00ed, make-upu, chytr\u00fdch telefon\u016f, protipo\u017e\u00e1rn\u00edch za\u0159\u00edzen\u00ed a p\u011bny na ha\u0161en\u00ed po\u017e\u00e1r\u016f. PFAS jsou zn\u00e1m\u00e9 svou odolnost\u00ed v\u016f\u010di teplu, vod\u011b, mastnot\u011b a skvrn\u00e1m.<\/p>\n\n<h2 class=\"wp-block-heading\">Zdravotn\u00ed rizika PFAS<\/h2>\n\n<p>Ned\u00e1vn\u00e9 studie uk\u00e1zaly, \u017ee PFAS jsou nebezpe\u010dn\u011bj\u0161\u00ed pro lidsk\u00e9 zdrav\u00ed, ne\u017e se d\u0159\u00edve myslelo. Expozice PFAS byla spojena s \u0159adou z\u00e1va\u017en\u00fdch zdravotn\u00edch probl\u00e9m\u016f, v\u010detn\u011b rakoviny, n\u00edzk\u00e9 porodn\u00ed hmotnosti a oslaben\u00e9ho imunitn\u00edho syst\u00e9mu.<\/p>\n\n<h2 class=\"wp-block-heading\">PFAS v pitn\u00e9 vod\u011b<\/h2>\n\n<p>PFAS se b\u011b\u017en\u011b vyskytuj\u00ed v pitn\u00e9 vod\u011b po cel\u00fdch Spojen\u00fdch st\u00e1tech. Odhaduje se, \u017ee v\u00edce ne\u017e 200 milion\u016f Ameri\u010dan\u016f m\u016f\u017ee p\u00edt vodu kontaminovanou PFAS.<\/p>\n\n<h2 class=\"wp-block-heading\">Zdravotn\u00ed doporu\u010den\u00ed EPA<\/h2>\n\n<p>V reakci na rostouc\u00ed obavy ohledn\u011b PFAS vydala Agentura na ochranu \u017eivotn\u00edho prost\u0159ed\u00ed (EPA) nov\u00e1 zdravotn\u00ed doporu\u010den\u00ed pro dv\u011b z nejroz\u0161\u00ed\u0159en\u011bj\u0161\u00edch PFAS: PFOS a PFOA. EPA sn\u00ed\u017eila limity pro PFOS a PFOA v pitn\u00e9 vod\u011b na 0,02 d\u00edl\u016f na bilion a 0,004 d\u00edl\u016f na bilion.<\/p>\n\n<p>EPA tak\u00e9 doporu\u010dila bezpe\u010dn\u00e9 limity pitn\u00e9 vody pro l\u00e1tky, kter\u00e9 jsou pova\u017eov\u00e1ny za n\u00e1hra\u017eky PFOA a PFOS. Pro chemik\u00e1lie GenX doporu\u010duje EPA hladiny 10 d\u00edl\u016f na bilion nebo m\u00e9n\u011b. Pro PFBS je limit 2 000 d\u00edl\u016f na bilion.<\/p>\n\n<h2 class=\"wp-block-heading\">Reakce na doporu\u010den\u00ed EPA<\/h2>\n\n<p>Reakce na ozn\u00e1men\u00ed EPA byly sm\u00ed\u0161en\u00e9. N\u011bkte\u0159\u00ed obh\u00e1jci tvrd\u00ed, \u017ee agentura ne\u0161la dost daleko a m\u011bla by regulovat PFAS jako celek (pod chemick\u00fd de\u0161tn\u00edk PFAS spad\u00e1 v\u00edce ne\u017e 9 000 chemik\u00e1li\u00ed), zat\u00edmco jin\u00ed si st\u011b\u017eovali, \u017ee nov\u00e1 doporu\u010den\u00ed jsou p\u0159ed\u010dasn\u00e1 a zp\u016fsob\u00ed pouze zmatek.<\/p>\n\n<h2 class=\"wp-block-heading\">Kroky EPA<\/h2>\n\n<p>EPA v sou\u010dasn\u00e9 dob\u011b nov\u00e1 zdravotn\u00ed doporu\u010den\u00ed nevynucuje ani nereguluje. Agentura v\u0161ak m\u016f\u017ee na podzim zav\u00e9st povinn\u00e9 normy pro n\u011bkter\u00e9 PFAS, kter\u00e9 by vy\u017eadovaly, aby obecn\u00ed slu\u017eby odstranily tyto l\u00e1tky z pitn\u00e9 vody. EPA tak\u00e9 ozn\u00e1mila, \u017ee poskytuje granty v hodnot\u011b 1 miliardy dolar\u016f, kter\u00e9 maj\u00ed pomoci komunit\u00e1m sn\u00ed\u017eit PFAS v jejich pitn\u00e9 vod\u011b.<\/p>\n\n<h2 class=\"wp-block-heading\">Kroky ke sn\u00ed\u017een\u00ed expozice<\/h2>\n\n<p>Osoby, kter\u00e9 maj\u00ed obavy ohledn\u011b PFAS, by m\u011bly podniknout kroky k omezen\u00ed sv\u00e9 vlastn\u00ed expozice. Mezi zp\u016fsoby, jak sn\u00ed\u017eit expozici, pat\u0159\u00ed:<\/p>\n\n<ul class=\"wp-block-list\">\n<li>Instalace vodn\u00edho filtru<\/li>\n<li>Vyhled\u00e1n\u00ed jin\u00fdch zdroj\u016f vody ke konzumaci<\/li>\n<li>Vyh\u00fdb\u00e1n\u00ed se v\u00fdrobk\u016fm obsahuj\u00edc\u00edm PFAS<\/li>\n<\/ul>\n\n<h2 class=\"wp-block-heading\">Dal\u0161\u00ed zdroje<\/h2>\n\n<ul class=\"wp-block-list\">\n<li>EPA: <a href=\"https:\/\/www.epa.gov\/pfas\" rel=\"nofollow noopener\" target=\"_blank\">https:\/\/www.epa.gov\/pfas<\/a><\/li>\n<li>Natural Resources Defense Council: <a href=\"https:\/\/www.nrdc.org\/stories\/pfas-everything-you-need-know\" rel=\"nofollow noopener\" target=\"_blank\">https:\/\/www.nrdc.org\/stories\/pfas-everything-you-need-know<\/a><\/li>\n<li>Environmental Working Group: <a href=\"https:\/\/www.ewg.org\/pfas\/\" rel=\"nofollow noopener\" target=\"_blank\">https:\/\/www.ewg.org\/pfas\/<\/a><\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>PFAS: Toxick\u00e9 chemik\u00e1lie v pitn\u00e9 vod\u011b Co jsou PFAS? PFAS neboli perfluoroalkyl a polyfluoroalkyl l\u00e1tky jsou skupinou syntetick\u00fdch chemik\u00e1li\u00ed, kter\u00e9 se po cel\u00e1 desetilet\u00ed pou\u017e\u00edvaj\u00ed v \u0161irok\u00e9 \u0161k\u00e1le v\u00fdrobk\u016f, v\u010detn\u011b&hellip;<\/p>\n","protected":false},"author":6,"featured_media":23630,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[38],"tags":[4638,176,173,178,179],"class_list":["post-16496","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-environmental-science","tag-environmental-health","tag-pfas","tag-drinking-water","tag-public-health","tag-water-contamination"],"_links":{"self":[{"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/posts\/16496","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/comments?post=16496"}],"version-history":[{"count":1,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/posts\/16496\/revisions"}],"predecessor-version":[{"id":16497,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/posts\/16496\/revisions\/16497"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/media\/23630"}],"wp:attachment":[{"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/media?parent=16496"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/categories?post=16496"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/tags?post=16496"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}