Qaphela izinhlanzi ezivela emachibini nasemifuleni, ziqukethe i-PFAS. Lokhu kuyinto efana ne-alamu ephakanyiswe nguMnyango Wezemvelo (DNR) waseWisconsin kanye nowezeMpilo (DHS) abakhiphe isexwayiso esisha esivimbela ukusetshenziswa kwezinhlanzi.
Ngokuya ngemiphumela yesampula yakamuva, i-DNR ne-DHS banxusa izakhamizi ukuthi zikhawulele izinhlanzi eziningi ngangokunokwenzeka emifuleni nasemachibini ezifunda zaseDane naseRock. Lawa manzi afaka iWingra Creek, iStarkweather Creek, iLake Monona, iLake Waubesa, amaLwandle aphezulu e-Upper ne-Lower Mud, iLake Kegonsa, noMfula i-Yahara ezansi nomfula lapho uhlangana khona neRiver Rock.
Ikakhulu, izinhlangano zombuso zombili zincoma ukungadli okungaphezu kokukodwa ngenyanga nge-crappie, i-largemouth bass, i-trout, i-pike esenyakatho ne-walleye kusuka kulawo manzi. Kwezinye izinhlobo, noma kunjalo, ukusetshenziswa kunqunyelwe kanye ngesonto.
Amasampula akhombise amazinga aphezulu we-perfluorooctane sulfonate, noma I-PFOS, ezinhlotsheni ezahlukahlukene zezinhlanzi eziqoqwe emachibini aseMonona, eKegonsa naseWaubesa. Leli khemikhali lingelinye lama-PFAS afundwe kakhulu, futhi laziwa ngokuqoqa kakhulu kwezinye izinhlobo. Amazinga we-PFOS angaphakathi kwezinhlanzi asukela ezingxenyeni eziyi-16,9 ngezigidigidi kuya ezingxenyeni ezingama-72,4 ngezigidigidi, ngokusho kwedatha enikezwe yi-DNR. Ezinye izinhlanzi, ezinjenge-largemouth bass, zazinokugxila okuphezulu okufika ezingxenyeni eziyi-180 ngezigidigidi.
Khumbula ukuthi i-PFAS iyiqembu lamakhemikhali enziwe ngumuntu asetshenziswe emikhiqizweni eminingi amashumi eminyaka, kufaka phakathi i-non-stick cookware, izisongelo zokudla okusheshayo, iziqukathi zokudla, i-plastic tableware, izifutho ezingamelana namabala, nezinye izinhlobo zegwebu lokulwa nomlilo . Lokhu kungcola kungene emvelweni ngezindlela ezahlukahlukene, kufaka phakathi ukuchitheka kwezinto eziqukethe i-PFAS, ukukhishwa kwamanzi angcolile e-PFAS ezikhungweni zokwelapha, nokusetshenziswa kwezinhlobo ezithile zamagwebu alwa nomlilo. I-DNR iyakuchaza lokho
ososayensi basaqhubeka nokufunda ngemiphumela yezempilo. Inani elikhulu lezifundo kubantu lihlolisise ubudlelwane obukhona phakathi kwamazinga e-PFAS egazini nemiphumela emibi yezempilo kubantu. Kodwa-ke, iningi lalezi Studi kuhlaziywe kuphela inani elincane lamakhemikhali futhi akuyona yonke i-PFAS enemiphumela efanayo. Lolu cwaningo lubonisa ukuthi amazinga aphezulu e-PFAS angakhuphula amazinga e-cholesterol, anciphise ukusebenza kabusha emithini yokugoma, futhi anciphise ukuzala kwabesifazane, phakathi kwabanye.
Isampula lamanzi angaphezulu nenhlanzi avela ebangeni lakwaYahara kuyingxenye yesinyathelo esibanzi se-DNR sokuqonda kangcono iPFAS endaweni ezungeze iWisconsin.
Ngo-2019, amasampula wamanzi angaphezulu aqoqwa eStarkweather Creek naseLake Monona, womabili lawo ayengcoliswe yilezi zinto. Amasampula wezicubu zezinhlanzi nawo athathwa eStarkweather Creek naseLake Monona abonisa amazinga aphakeme e-PFOS, okuholele ekuxwayisweni kokudla okwakhishwa yi-DNR kanye ne-DHS ekuqaleni konyaka odlule ngoJanuwari 2020 ngezinhlanzi ezazibanjiwe.
Ngeshwa, lokhu akuyona into entsha. Kungakho izwe laseWisconsin likhuphula izilawuli. Kubelwe u- $ 20 million wokuqapha nokuhlola i-PFAS kepha nokunikela ngosizo nezinsizakusebenza emiphakathini yasendaweni ethinteka kulokhu kungcola okusabisayo.
Funda izindatshana zethu ku PFAS
Imithombo yereferensi: UMnyango Wezemvelo kanye neWisconsin uMnyango Wezempilo
FUNDA futhi:
- I-PFAS ku-tableware e-compostable kuma-canteens, kepha hhayi kwi-Mater-Bi: I-Novamont iyakuqinisekisa
- Imvula iPfas e-American Great Lakes: izingozi zezempilo
- I-Pfas nayo ifakwa kumanyolo wasendlini osuselwe endle, isifundo
- Ama-Pfas obisini lwebele: ucwaningo olusha lubonisa ukungcoliswa kwendawo yonke futhi okukhathaza kakhulu
