Toxicate Rocket Fuel e fumanoeng ka Lettuce la Mariha
Lilemong tse leshome tse fetileng, ho silafatsoa ha metsi ka metsi ho 'nile ha nkoa e le bothata ba libaka kapa tsa tikoloho,' me sepheo se tsoang ho Environmental Working Group se entse hore ho silafatsoe hohle hohle e be taba ea naha-e hlahisang khato e laoloang ke Environmental Protection Agency (EPA).
Lipatlisiso li bontšitse hore lettuce le hōlileng nakong ea hoetla le likhoeli tsa Amerika Boroa kapa Arizona e ka 'na ea e-na le lihlahisoa tse phahameng tse nang le chefo ea li-rocket, tse fokolang ho feta kamoo ho nkoang e sireletsehile kateng ke EPA ho latela liteko tsa laboratori tse ikemetseng tse entsoeng ke Environmental Working Group (EWG).
EWG e bolela hore feela ka ho ja lettuce, basali ba Amerika ba limilione tse 1,6 ba lilemo tsa ho beleha ba ne ba pepesoa letsatsi le leng le le leng nakong ea likhoeli tsa mariha ho feta ho feta tekanyo e sireletsehileng ea EPA.
Ho ea ka litlaleho tsa mecha ea phatlalatso, lisele tsa lettuce li ne li e-na le boholo ba li-perchlorate. E 'ngoe, e neng e le mefuta e sa tšoaneng ea meroho e tsoakaneng ea bana, e ne e e-na le tšilafalo ea lichelete tse nkiloeng ka makhetlo a 20 ho feta chelete eo California hona joale e nkang e sireletsehile bakeng sa metsi a nooang. Tse ling li ne li e-na le litekanyetso tsa lichelete tse hlano ho feta boemo ba polokeho ea California.
Perchlorate ke tšilafalo e teng tikolohong e le karolo ea lik'hemik'hale tse kang ammonium, potasiamo, kapa sodium perchlorate. Ammonium perchlorate e entsoe e le motsoako oa oksijene-o eketsang motlakase o matla bakeng sa lirotoana, linotlolo le mesebetsi ea mollo.
Ha ho etsoa liteko tsa ho hlahisa lihlahisoa tsa li-supermarket, karolo ea 18 lekholong ea litekete tsa lettuce e ne e e-na le litekanyetso tse hlakileng tsa lettuce, 'me ka karolelano letlalo le silafalitsoeng le ne le e-na le makhetlo a mane ho feta ha EPA e re e sireletsehile metsing a nooang.
Mohloli oa li-perchlorate, ho ea ka EWG, mohlomong ke Nōka ea Colorado, eo metsi a eona a silafetseng a nang le litšila a nosetsa lihekthere tse fetang limilione tse 1,4 California le Arizona.
Liteko tsa EWG lihlahisoa tsa mabenkele li ile tsa tiisa lipatlisiso tsa pele mabapi le lipeo tsa lettuce tse hōlileng ka ho futhumatsa le lettuce e hōlileng tšimong, kale le spinach.
Renee Sharp, setsebi se phahameng seofising sa EWG sa California, o re: "Lintho tseo re li fumaneng le liteko tsa pele ho moo li bontša hore li-rocket tse nang le chefo e seng feela bothata ba tikoloho libakeng tseo metsi a nooang a silafalitsoeng, empa ho ameha ka sechaba ho bohle ba jang lettuce la mariha." motlatsi oa moqolo. "
Perchlorate, karolo e phatlollang ea rocket le messile fuel, e ka ama bokhoni ba qoqotho ea bokhoni ba ho etsa lihomone tsa bohlokoa. Bakeng sa li-fetus, masea le bana, ho tsieleha ha li-hormone tsa thyroid ho ka baka ho theoha ha IQ, ho lahleheloa kelellong, ho lahleheloa ke kutlo le ho bua, le ho haelloa ke matla a likoloi.
Perchlorate e silafatsa metsi a fetang a 500 a metsi a nooang linaheng tse 20, e sebeletsa batho ba fetang limilione tse 20. Har'a mehloli e mengata e silafetseng ke Nōka ea Colorado, e sa fane feela ka metsi a nooang ho Los Angeles, Phoenix, Las Vegas le metseng e meng, empa hape e nosetsang karolo ea 70 lekholong ea lettuce ea sechaba e hōlile ho tloha ka October ho ea ho March. Har'a lihlopha tse 15 tse etellang pele tsa lettuce tse ntseng li hōla United States, ba 10 ba tseba kapa ba belaela hore ke tšilafalo ea tšilafalo.
Ka nako e le 'ngoe, ha boholo ba ts'oaetso ea li-perchlorate naheng ka bophara e tsoa libakeng tsa sesole kapa limela tse sebelisoang ke likonteraka tsa ts'ireletso tsa muso, White House e ile ea botsa Congress hore e fane ka mehloli ea litšireletso melaong e mengata ea tikoloho, ho akarelletsa ho hloekisa litšila tse chefo.
US Sen Barbara Boxer, D-Calif., Le Sen Sen Nell Soto, D-Ontario, ba hlahisa likoloto tse ka etsang hore bohle ba senyang le ba teng kajeno ba senole tšebeliso ea bona, mokhoa oa ho lahla le histori ea ho tsuba.
Mabapi le Perchlorate
Ho tšoenyeha ka li-perchlorate ho 'nile ha e-ba teng ho tloha ka 1997.
Perchlorate e kena-kenana le ho iodde ho kenngoa ka qoqotho ea qoqotho. Hobane iodide ke motsoako oa bohlokoa oa lihomone tsa thyroid, li-perchlorate li senya tsela eo qoqotho e sebetsang ka eona. Ho batho ba baholo, thyroid e thusa ho laola metabolism. Ho bana, thyroid e phetha karolo ea bohlokoa ntlafatsong e nepahetseng ho phaella ho metabolism.
Bothata ba mosebetsi oa qoqotho ka bo-'mè ba lebelloang bo ka ama lesea le lesea le sa tsoa tsoaloa 'me la baka liphello tse kenyelletsang liphetoho boitšoarong, ho lieha nts'etsopele le ho fokotsa bokhoni ba ho ithuta.
Liphetoho tsa li-hormone tsa thyroid li ka boela tsa fella ka li-tumor tsa qoqotho. Tlhahlobo ea EPA ea chefo e fokolang ke hore ho senyeha ha li-iodide ke ho etsa hore liphetoho li be teng ho nts'etsopele kapa ho thehoa ha hlahala.
Ho ea ka California Environmental Protection Agency, liphuputso li bontša hore li-perchlorate li senya tlhahiso ea lihomone tsa qoqotho, e leng se bakang hypothyroidism le tse sa tloaelehang, li-tumor tsa qoqotho. Kotsi ke e kholo ho basali ba nang le bakhachane, bana le batho ba nang le mathata a bophelo bo botle kapa maemo a qoqotho.
EPA e Etela Litekanyetso tsa Perchlorate
Ho lemoha kotsi ea ho phalla, EPA e re lebitso lena le na le tšilafalo. Mokhatlo ona o khetholla litsela tsa toxin 'meleng oa motho ebe o beha litekanyetso tsa ho boleloa eka ke tšilafalo. Bohato ba ho laola bocha bo ntse bo tsoela pele ho hlahella ho potoloha ha tikoloho ho pholletsa le maemo a naha le a muso.