Cadmium yog cov tshuaj lom neeg nrog lub cim Cd thiab atomic naj npawb 48. Cov hlau mos, silvery-white yog tshuaj zoo ib yam li ob lwm cov hlau ruaj khov hauv pawg 12, zinc thiab mercury.
Cov khoom lag luam twg yog cadmium pom hauv?
Feem ntau cov av thiab pob zeb, suav nrog cov thee thiab pob zeb hauv av chiv, muaj qee cov cadmium. Cadmium siv ntau yam khoom, suav nrogroj teeb, pigments, hlau txheej, thiab plastics, thiab nws muaj nyob hauv cov pa luam yeeb. Cadmium nkag mus rau ib puag ncig los ntawm kev ua haujlwm mining thiab kev ua haujlwm ntawm cua thiab nag.
Cadmium feem ntau pom nyob qhov twg?
Nws feem ntau pom muaj me me hauv zinc ores, xws li sphalerite (ZnS). Cadmium mineral deposits muaj nyob rau hauv Colorado, Illinois, Missouri, Washington thiab Utah, nrog rau Bolivia, Guatemala, Hungary thiab Kazakhstan. Txawm li cas los xij, yuav luag tag nrho cov cadmium siv yog cov khoom siv los ntawm kev kho zinc, tooj liab thiab txhuas ore.
Cadmium siv rau hauv lub neej txhua hnub yog dab tsi?
Cadmium tau dhau los ua cov hlau tseem ceeb hauv kev tsim cov nickel-cadmium (Ni-Cd)roj teeb rechargeablethiab ua cov txheej txheem tiv thaiv corrosion rau hlau thiab hlau. Feem ntau siv rau cadmium niaj hnub no yog nyob rau hauv cov roj teeb, alloys, coatings (electroplating), solar cells, yas stabilizers, thiab pigments.
Cadmium pom nyob qhov twg?
Los ntawm av, qee yam nroj tsuag (muab luam yeeb, mov, lwm yam cereal nplej, qos yaj ywm, thiab lwm yamzaub) noj cadmium ntau tshaj li lawv ua lwm yam hlau hnyav xws li txhuas thiab mercury (Satarag li al. 2003). Cadmium kuj muaj nyob rau hauv nqaij, tshwj xeeb tshaj yog cov khoom qab zib xws li daim siab thiab raum.
