Fum din da aka yi amfani da dutse mai guba da aka samo a cikin samfurori na letus
A cikin shekaru goma da suka gabata, an yi la'akari da matsala na ruwa a cikin gida ko na yanki na yanki, kuma binciken daga Ma'aikatar Ayyukan Muhalli ya haifar da abin da ya shafi damuwa na kasa - wanda ya haifar da tsari daga hukumar kare muhalli (EPA).
Bincike ya nuna cewa karan da ke girma a cikin hunturu da watanni hunturu a Kudancin California ko Arizona na iya ƙunshe da ƙananan matakan da ake amfani dashi na man fetur mai guba mai tsanani, wanda aka yi la'akari da ita ta hanyar EPA bisa ga gwajin gwagwarmaya masu zaman kansu wanda Hukumar ta Ma'aikatar Muhalli ta umurce (EWG).
EWG ya ce kawai ta cin abinci mai yalwaci, mata miliyan 1.6 na matan Amurka masu haihuwa suna nunawa yau da kullum a lokacin watanni na hunturu don samun karin launi fiye da yadda aka kare EPA.
A cewar rahotanni na jarida, samfurorin samfurori sun ƙunshi yawancin perchlorate. Ɗaya, wadda ta kasance nau'i-nau'in kwayoyin halitta da aka haɗe da jariri, yana da nauyin ƙaddamar da perchlorate sau 20 sau da yawa fiye da yawan California a halin yanzu yana dauke da lafiya don shan ruwa. Sauran sun sami saurin ƙwaƙwalwa sau biyar fiye da matakin tsaro na California.
Perchlorate shi ne gurbata wanda yake wanzu a cikin yanayin a matsayin wani ɓangare na sauran mahaukaci kamar ammonium, potassium, ko sodium perchlorate. Ana amfani da perchlorate ammonium a matsayin wani bangaren hada-hadar oxygen a cikin man fetur mai amfani da roka, missiles, da wuta.
A cikin gwaje-gwaje na perchlorate a cikin manyan kaya, kashi 18 cikin dari na samfurorin samin sun ƙunshi matakan da ake ganowa na perchlorate, da kuma yawancin launi na yaduwa da aka gurbata ya ƙunshi sau 4 more perchlorate fiye da EPA ya ce yana da lafiya a ruwan sha.
Maganar perchlorate, bisa ga EWG, ya fi dacewa da Kogin Colorado, wanda ruwan da aka gurɓataccen perchlorate ya shafe fiye da milyan 1.4 a California da kuma Arizona.
Gwaje-gwaje na EWG a kan sayar da kaya sun tabbatar da binciken da suka gabata a kan bishiyar letas da tsire-tsire-tsire-tsire-tsire-tsire-tsire, da, da kuma alayyafo.
"Abubuwan da muka gano da gwaje-gwajen da aka yi a baya sun nuna cewa man fetur mai guba mai ƙyama ba kawai matsalar yankuna ba ne a yankunan da aka gurɓata ruwan sha, amma damuwa na kasa ga duk wanda ke cin 'ya'yan letus," in ji Renee Sharp, babban mai ba da shawara a ofishin EWG na California. co-marubucin rahoton. "
Perchlorate, abin fashewar roka da man fetur, zai iya shafar ƙwayar jinin gwiwar karoid don yin jima'i masu muhimmanci. Don tayi, jarirai da yara, rushewa a cikin matakan karamar karoid na iya haifar da saukar da IQ, jinkirta tunanin mutum, hasara na sauraro da magana, da kuma ragowar fasaha.
Perchlorate gurbata fiye da 500 ruwa source a jihohi 20, bauta wa fiye da miliyan 20. Daga cikin manyan wuraren da aka gurbata shi ne kogin Colorado, wanda ba wai kawai yake bayar da ruwan sha ga Los Angeles, Phoenix, Las Vegas da wasu birane ba, amma har ya kai kashi 70 cikin dari na letas daga ƙasar daga Oktoba zuwa Maris. Daga cikin manyan kananan gundumomi 15 na Amurka a cikin Amurka, 10 sun san ko mahimmanci asalin lalacewar perchlorate.
Bugu da} ari, yayin da yawancin wuraren da aka samu a cikin asashen waje sun fito ne daga asusun soja ko tsire-tsire masu amfani da kwangila na tarayya, Fadar White House ta bukaci majalisar ta dakatar da kariya daga wasu ka'idodin muhalli, ciki har da tsaftace cutarwa mai guba.
Jami'ar Amurka Barbara Boxer, D-Calif, da kuma Majalisar Dattijai. Nell Soto, D-Ontario, sun gabatar da takardun kudade da zasu buƙaci duk wani abin da ya faru na baya-bayan nan da aka yi da shi don bayyana yadda suke amfani da su, yadda za a zubar da su da kuma tarihi.
About Perchlorate
Damuwa game da perchlorate sun kasance tun daga 1997.
Perchlorate yana tsoma baki tare da maididari zuwa cikin glandon thyroid. Saboda iodide ne mai muhimmanci bangaren thyroid hormones, perchlorate disrupts yadda thyroid ayyuka. A cikin manya, thyroid taimaka wajen tsara metabolism. A cikin yara, thyroid yana taka muhimmiyar rawa wajen cigaba da cigaba a baya ga metabolism.
Lalacewa na maganin thyroid a cikin iyaye masu sa ran zasu iya rinjayar tayin da jariri kuma ya haifar da halayen ciki har da canje-canje a cikin hali, jinkirta cigaba da rage ƙwarewar ilmantarwa.
Canje-canje a cikin matakan hormone thyroid zai iya haifar da thyroid gland shine ciwon sukari. Binciken EPA na ƙwayar cututtukan perchlorate shi ne cewa rushewa na perchlorate na biyan din din din shine babban abin da zai haifar da canje-canje a ci gaba ko ciwon tumo.
Bisa ga hukumar kare muhalli na California, nazarin ya nuna cewa perchlorate ya rushe hankalin ka, wanda ya haifar da hypothyroidism kuma mafi mawuyacin hali, thyroid ciwace-ciwacen daji . Rashin haɗari ya fi girma ga mata masu juna biyu, yara, da mutanen da suke da matsalolin kiwon lafiyar ko kuma yanayin yanayin thyroid.
Kwalejin EPA a Tsarin Tsarin Tsari
Sanin haɗarin perchlorate, EPA ya maida fili a matsayin gurbatacce. Kungiyar ta gano hanyoyin da ake ciki a cikin jikin mutum kuma ta kafa ka'idoji don ƙaddarawa. Ƙaddamarwar aiki ta ci gaba da bunkasa game da yanayin da ake ciki zuwa perchlorate a kan tsarin jihohi da tarayya.