Mafuta a Toxic Rocket Anapezeka mu Lettuce ya Zima
Zaka khumi zapitazo, kuyambitsa madzi akumwa akuonedwa kuti ndi vuto lapanyumba kapena lachigawo, ndipo zofufuza kuchokera ku Environmental Working Group zinapangitsa kuti pakhale vuto lachidziwitso la dziko lonse - zomwe zimapangitsa kuchitapo kanthu kuchokera ku Environmental Protection Agency (EPA).
Kafukufuku wasonyeza kuti letesi yakula m'mayezi komanso m'nyengo yozizira ku Southern California kapena Arizona, imakhala ndi miyala yambiri ya poizoni ya rocket, yomwe imakhala yopanda mphamvu ndi EPA malinga ndi zomwe bungwe la Environmental Working Group (EWG) linayesa.
EWG imanena kuti mwa kudya kasupe, amayi okwana 1.6 miliyoni a ku America a zaka za kubala anali kuwonetseredwa tsiku ndi tsiku m'nyengo yozizira kuti adziŵe kwambiri kuposa momwe EPA inalimbikitsire mlingo wotetezeka.
Malinga ndi malipoti a ma TV, zitsanzo za letesi zinali ndi zowonjezera zowonjezera. Imodzi, yomwe inali yambiri yambiri yosakaniza ana, idakhala ndi kuchuluka kwa mankhwala opitirira makumi awiri kuposa ndalama zomwe California akuona kuti ndizopanda madzi abwino. Enawo anali ndi chiwerengero chafupipafupi kuposa kasanu ndi chitetezo cha California.
Perchlorate ndi zowonongeka zomwe zimapezeka m'chilengedwe monga gawo la mankhwala monga ammonium, potaziyamu, kapena sodium perchlorate. Ammonium perchlorate amapangidwa monga oxygen-kuwonjezera chigawo mu olimba mafuta propellant kwa makomboti, mizati, ndi zida.
Poyesera mankhwala opangidwa ndi masitolo akuluakulu, 18 peresenti ya letesiyi inali ndi ziwerengero zowonongeka, ndipo kawiri kawiri katsulo kameneka kanakhala kozungulira kawiri kuposa momwe EPA imati ndi yotetezeka m'madzi akumwa.
Gwero la mtunduwu, malinga ndi EWG, ndiwowoneka kuti ndi mtsinje wa Colorado, umene madzi ake owonongekawo amatsanulira mahekitala oposa 1.4 miliyoni ku California ndi Arizona.
Kuyesera kwa EWG pa zokolola zamalonda kunatsimikizira kafukufuku wakale wa maluwa a letesi obiriwira omwe ali ndi greenhouse, letesi, kale, ndi sipinachi.
Renee Sharp, yemwe ndi katswiri wamkulu wa ofesi ya EWG ku California, anati: "Zomwe tapeza ndi mayesero oyambirira zimasonyeza kuti mafuta a miyala ya poizoni si madera okhaokha m'madera omwe madzi akumwa amawonongeka, koma chidwi cha dziko lonse kwa aliyense amene amadya tsamba lachisanu. wolemba nawo wa lipoti. "
Mafuta a perchlorate, omwe akuphulika kwambiri pa miyala ya rocket ndi missile mafuta, angakhudze mphamvu ya chithokomiro yokhala ndi mahomoni ofunikira. Kwa fetus, makanda ndi ana, kusokonezeka kwa mahomoni a chithokomiro kungayambitse kufooketsa IQ, kutaya mtima, kutaya kwa kumva ndi kulankhula, ndi kuchepa kwa magalimoto.
Perchlorate imadetsa madzi oposa 500 a madzi akumwa m'mayiko 20, akutumikira anthu oposa 20 miliyoni. Zina mwazikulu zowonongeka ndi Colorado River, zomwe sizimangopereka madzi akumwa ku Los Angeles, Phoenix, Las Vegas ndi mizinda ina, komanso kuthirira 70 peresenti ya letesi ya mtunduwu ikukula kuyambira October mpaka March. Pa khumi ndi khumi omwe akutsogolera zigawo za ku letesi ku US, 10 adziwa kapena akukayikira kuti pali zowonongeka.
Panthawi imodzimodziyo, ngakhale kuti mankhwala ambiri padziko lonse amachokera ku maboma kapena zomera zomwe zimagwiritsidwa ntchito ndi makampani oyang'anira chitetezo, bungwe la White House linapempha Congress kuti iteteze malo odzitetezera ku malamulo osiyanasiyana, kuphatikizapo kukonza zonyansa.
US Sen. Barbara Boxer, D-Calif., Ndi Sen Sensa Nell Soto, D-Ontario, aliyense adayambitsa ngongole zomwe zikanafuna kuti anthu onse akale ndi amasiku ano akuwonetsa ntchito zawo, njira yotaya ndi mbiri ya kutuluka.
About Perchlorate
Nkhawa zokhudzana ndi perchlorate zakhala zikuzungulira kuyambira 1997.
Perchlorate imalepheretsa kuti iodide iyambe kutulutsa chithokomiro. Chifukwa chakuti iodide ndi chinthu chofunika kwambiri pa mahomoni a chithokomiro, kuyendayenda kumasokoneza momwe chithokomiro chimagwirira ntchito. Kwa anthu akuluakulu, chithokomiro chimathandiza kuthetsa kagayidwe kameneka. Kwa ana, chithokomiro chimakhala ndi mbali yaikulu pa chitukuko chabwino kuphatikizapo kuchepetsa thupi.
Kuwonongeka kwa chithokomiro kwa amayi oyembekezera kungakhudze mwana wamwamuna ndi mwana wakhanda ndipo zotsatira zake zimaphatikizapo kusintha kwa khalidwe, kuchepetsa chitukuko ndi kuchepetsa kuphunzira.
Kusintha kwa mahomoni a chithokomiro kungayambitsenso zotupa za chithokomiro. Kufufuza kwa EPA kwa mankhwala oopsa kwambiri ndiko kuti kusokonezeka kwa kusokonezeka kwa iodide ndi chochitika chachikulu chomwe chimapangitsa kusintha kwa chitukuko kapena kupanga mapulusa.
Malingana ndi California Environmental Protection Agency, kafukufuku akusonyeza kuti kupweteka kwa mavitamini kumapangitsa kuti maselo a chithokomiro asokonezeke, zomwe zimachititsa kuti hypothyroidism ndi zina zambiri, zivomezi za chithokomiro. Vuto ndi lalikulu kwambiri kwa amayi apakati, ana, ndi anthu omwe ali ndi matenda odwala kapena asokoneza chithokomiro.
EPA Imayendera Malamulo a Perchlorate
Podziwa kuti ngoziyi imakhala yoopsa, EPA yatchula kuti mankhwalawa ndi oipitsa. Bungweli limatchula njira za poizoni m'thupi la munthu ndipo zimakhazikitsa miyezo yoyenera kuipitsidwa. Zochita zowonongeka zikupitirizabe kuyendera kuzungulira zachilengedwe poyendetsa dziko ndi boma.