Muaj Qib Siab ntawm Cadmium hauv Haus Luam Yeeb
Cadmium yog ib qho hnyav hlau uas tshwm sim hauv qhov. Cadmium kuj yog tsim los ntawm kev tsim los ntawm cov txheej txheem ntawm smelting (cua sov thiab yaj rau hluav taws xob cov hlau tawm). Cadmium muaj nyob rau hauv theem qis hauv cov zaub mov, thiab hauv qib siab hauv luam yeeb.
Cas Yuav Siv Cadmium
Cadmium tsis corrode yooj yim, yog li nws ua haujlwm zoo hauv cov roj teeb; nws siv thawj. Cadmium kuj siv rau hauv cov hlau plating, plastics thiab textile manufacturing.
Cov kab mob feem ntau ntawm cadmium raug rau cov pejxeem feem ntau yog los ntawm cov khoom noj thiab luam yeeb haus luam yeeb.
Cadmium hauv Khoom Noj
Cadmium tshwm sim hauv ntau cov khoom noj vim nws nyob hauv cov av thiab dej. Cadmium theem hauv ntau cov khoom noj hauv Teb Chaws Asmeskas yog 2 thiab 40 feem ntawm ib npib tooj (2-40ppb). Cov txiv hmab txiv ntoo thiab dej haus muaj qhov tsawg tshaj plaws ntawm cadmium, thaum pom cov zaub thiab cov qos yaj ywm muaj ntau tshaj. Qwj ntses, daim siab, thiab lub plawv me yog cov siab hauv cadmium.
Nws tau kwv yees tias ntawm 30 micrograms (mcg - millionths ntawm ib tug kab) ntawm cadmium neeg nruab nrab txhua hnub, 1-3 mcg yog khaws cia los ntawm lub cev.
Cadmium hauv Haus Luam Yeeb Ncaws
Ib qho luam yeeb tsuas muaj 1-2 mcg ntawm cadmium. Thaum raug kub hnyiab, cadmium yog nyob ntawm theem ntawm 1,000-3,000 ppb hauv cov pa taws. Kwv yees li ntawm 40 mus rau 60 feem pua ntawm cadmium inhaled los ntawm cov pa luam yeeb muaj peev xwm kis tau los ntawm lub ntsws thiab hauv lub cev. Qhov no txhais tau hais tias kom txhua pob ntawm cov luam yeeb haus luam yeeb, ib tug neeg tuaj yeem nqus tau ntxiv 1-3 mcg ntawm cadmium tshaj qhov tau txais los ntawm lwm qhov chaw hauv lawv lub neej txhua hnub.
Cov neeg haus luam yeeb feem ntau muaj ob zaug kom ntau npaum cov kab mob hauv lawv lub cev uas tsis yog neeg haus luam yeeb.
Lwm Yam Khoom Ntawm Cadmium Raug
Cov neeg ua hauj lwm hauv qee qhov kev ua haujlwm muaj peev xwm yuav muaj peev xwm muaj feem xyuam xim kabmob kis tus mob. Qhov no yuav muaj cov neeg ua haujlwm nrog:
- Soldering
- Vuam
- Roj teeb, plastics thiab textile manufacturing
Kev Raug Zoo ntawm Kev Raug Zoo
Lub Teb Chaws Asmeskas Environmental Protection Agency (EPA) pom zoo tias muaj kev nyab xeeb ntawm cadmium hauv cov dej haus yog 5 ppb lossis tsawg dua. EPA ntseeg tias qhov theem ntawm kev raug mob ntawm cadmium yuav tsis tsim ib qho teeb meem mob ntsig txog cov tshuaj cadmium.
Ua Hauj Lwm Kev Noj Qab Haus Huv
Kev ua rau neeg noj tshuaj tau cov kab mob yuav tsim tau cov tsos mob li nram qab no:
- xeev siab, ntuav
- raws plab
- leeg leeg
- salivation
- hnov teeb meem
- daim siab mob
- kev sib ceg
- poob siab
- lub raum tsis ua haujlwm
Kev raug mob rau cov kab mob hauv nqus tau ua rau ua mob ntsws nrog rau pneumonitis thiab pulmonary edema.
Kev mob ntev, ntev mus rau cadmium ntawm theem siab tshaj qhov uas tau txais kev tso cai los ntawm EPA tuaj yeem ua rau mob ntsws, mob raum, siab, pob txha lossis ntshav.
Cadmium thiab Cancer
Thaum lub sij hawm tseem tsis tau tiav, Lub Chaw Khiav Dej Num Kev Tshawb Fawb Txog Kev Tshawb Fawb Txog Kev Mob Nkeeg thiab Teb Chaws Asmeskas Kev Tiv Thaiv Kev Nyab Xeeb tau txiav txim tias cov tshuaj lom neeg feem ntau ua rau mob cancer.
Lub Kab Hauv Qab
Cadmium yog ib qho hnyav hlau thiab hnyav ntau hauv cov pa luam yeeb hauv pa luam yeeb. Nws ua rau lub ntsws ntsws puas tsuaj thiab tuaj yeem txoos ua lub sij hawm ua rau lub raum, lub siab, tus pob txha thiab cov ntshav puas. Cadmium yog ib qho ntawm ntau pua cov co toxin uas muaj nyob hauv luam yeeb.
Pov tseg tsis muaj sij hawm ntaus koj tus cwj pwm haus luam yeeb mus rau kev curb. Nws muaj koj tsis muaj dab tsi ntau tshaj li tus kab mob thiab thaum kawg - tuag.
Qhov chaw:
Consumer factsheet rau Cadmium. 28 Kaum Ib Hlis Ntuj, 2006. Lub Teb Chaws Asmeskas Tiv Thaiv Kev Nyab Xeeb
Cadmium Factsheet. Lub Plaub Hlis, 2010. Cov Chaw rau Kev Tswj Xyuas Kab Mob.
Public Health Statement rau Cadmium. Lub Xya Hli, 1999. Lub Chaw Sawv Cev Rau Tshuaj Tiv Thaiv thiab Tshuaj Txhaum.