Fiye 75 shekaru, gurbatar Mercury daga Badger Army Ammonition Shuka ta sanya kifi mai guba da rayuwar ruwa a tafkin Wisconsin, tare da sanya lafiyar jama'a cikin hadari. Amintacciyar kawar da gurɓatattun kayan kwalliya ana buƙatar gaske don kare lafiyar ɗan adam daga bayyanar da ke gudana.
Matakan Mercury na yanzu
Duk da ayyukan da aka yi a baya, kamar kimanin 16 na Gruber's Grove Bay na Lake Wisconsin har yanzu yana dauke da suturar mercury. Ƙididdigar Mercury a wasu yankunan bay yana da kamar nauyin 6.3 milligrams da kilogram (MG / kg), a sama da burin tsabtace kawai 0.36 MG / kg wanda Wisconsin DNR ya kafa.
Amfani da kifaye
Babban damuwa na kiwon lafiyar jama'a da aka danganta da mercury a cikin bay shi ne gurbata nau'in kifaye, bisa ga Wisconsin DNR. Mercury ya tara cikin kifaye kamar methylmercury. Wannan nau'i na mercury ya haifar da babbar haɗari ga lafiyar mutum ta amfani da kifin gurbata.
Jarabawa da sojojin Amurka suka yi sun tabbatar da cewa matakan mercury a cikin kifin kifi da aka kama a Gidan Grove Bay ya fi girma a cikin kifaye a sauran Wisconsin Riverway.
Mazaunan da ba su da yawa
Yaran da ke cikin ciki na iya fuskantar sifar methylmercury lokacin da iyayensu mata suka ci kifi da kifin kifin wanda ya kunshi methylmercury. Wannan bayyanarwar na iya shafar tasirin kwakwalwar jarirai da ba a haifa ba. Wadannan tsarin na iya zama masu sauki ga methylmercury fiye da kwakwalwa da tsarin juyayi na manya.
Tarihin Wasar da Kasawa zuwa Gidan Gruber's Grove Bay
Yayin shekaru masu aiki, Badger Army Ammunition Plant dakatar da ruwa mai tsabta zuwa Gruber ta Grove Bay na Lake Wisconsin sakamakon haifuwa daga lake kasa sediments. Magungunan kwakwalwa sun haɗa da gubar, jan karfe, arsenic, ammonia, nitroglycerine, PCBs da methylmercury - mafi yawan sinadarin mercury. Mercury abu ne mai guba mai tsanani kuma babu wata sanarwa da aka sani. Da kyau, ba yara ko manya ba su sami mercury a jikinsu.
Shiga takarda kai zuwa EPA a www.cswab.org/news-action/ faɗakarwa
Laura Olah | Babban Darakta | CSWAB.org
Gudanarwar Ƙasa | Kashe Gangamin Wuta
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