Ikoko Ipamusoro-soro yeCadmium muSighette Smoke
Cadmium insimbi inotyisa inorema inowanikwa muzvisikwa. Cadmium inogadzirwawo sechinhu-chibereko chekuita kwe smelting (kupisa uye kuchenesa ores kuti ibvise zvimbi). Cadmium iripo muzvikamu zvakaderera mune zvekudya, uye mupamusoro muutsi hwefodya.
Nzira yeCadmium Inoshandiswa Sei?
Cadmium haina kukonzera nyore nyore, saka inoshanda zvakanaka mumabhatiri; kunyanya kushandisa kwayo. Cadmium inoshandiswawo mumucheka weplastiki, mapurasitiki nemucheka wekugadzira.
Chimiro chakajairika che cadmium kufungidzirwa kwevanhu vazhinji ndeyekudya uye utsi hwefodya.
Cadmium muKudya
Cadmium inowanzoitika muzvokudya zvakawanda nokuti iripo muvhu uye mvura. Cadmium mazinga muzvokudya zvizhinji zveUnited States zviri pakati pe2 ne40 zvikamu pamabhiriyoni (2-40ppb). Zvibereko nezvimwe zvinwiwa zvinosanganisira chiduku chiduku che cadmium, asi miriwo mashizha uye mbatata yakasviba ine zvakanyanya. Shellfish, chiropa, uye nyama yemafuta zvinowedzerawo mu cadmium.
Inofungidzirwa iyo yemakiromita makumi matatu (mcg - mamiriyoni e gram) ye cadmium munhu wega wega hunoshandisa zuva nezuva, 1-3 mcg inotsigirwa nemuviri.
Cadmium muCigarette Smoke
Sirivha imwe chete inowanzova 1-2 mcg ye cadmium. Kana ichipiswa, cadmium iripo pamwero we1000-3000 ppb muutsi. Inenge 40 kusvika ku60 kubva muzana ye cadmium inoputirwa neutsi hwefodya inokwanisa kudarika mapapu uye kupinda mumuviri. Izvi zvinoreva kuti pamutambo wega wega fodya inopfungaira, munhu anogona kuwedzera mamwe mamiriyoni e cadmium pane izvo zvinoitwa kubva mune zvimwe zvinhu muupenyu hwavo hwezuva nezuva.
Vakasvuta vanowanzova cadmium kaviri mumitumbi yavo sevasina kusvuta.
Zvimwe Zvinyorwa zveCadmium Exposure
Vanhu vanoita mune dzimwe nzvimbo dzakanyanya ngozi pabasa vanogona kutarisana nenjodzi yakawanda yekutengesa cadmium. Izvi zvinosanganisira vanhu vanoshanda ne:
- Kugadzirisa
- Welding
- Battery, plastics uye textile manufacturing
Nhamba Yakachengeteka Yokuratidzwa
IU.S. Environmental Protection Agency (EPA) inoratidzira kuti nzvimbo yakachengeteka ye cadmium mumvura yekunwa is 5 ppb kana pasi. IEPA inofunga kuti ichi chiyero chekutsvaga cadmium hachizogadziri chero matambudziko ehutano anosangana ne cadmium.
Associated Health Risks
Kunyatsosangana ne cadmium inodywa kunogona kuita zviratidzo zvinotevera:
- kushungurudza, kurutsa
- chirwere
- muscle cramps
- salivation
- kushungurudzika kwepfungwa
- chiropa kukuvara
- kunetseka
- shock
- renal failure
Kunyatsosangana ne cadmium inhaled inogona kukonzera zvinetso zvemapapu zvinosanganisira pneumonitis nemapemmine edema.
Kusingaperi, kuratidzwa kwenguva refu kwe cadmium pamagariro pamusoro pezvinoonekwa zvakachengeteka neEPA zvinogona kukonzera mapapu, hono, chiropa, bone kana kukanganiswa kweropa.
Cadmium uye Cancer
Kunyange zvazvo kugadziriswa kusarudzo kusati kwaswededzwa, International International Agency for Research on Cancer uye US Environmental Protection Agency yakatsanangura kuti cadmium inogona kukonzera kenza.
The Bottom Line
Cadmium isimbi inorema ine metal uye inowanikwa muhuwandu hweutsi hwekusvuta. Iyo inokanganisa mapapu emapapu uye inogona kuvaka pamusoro penguva kukonzera tsvina, chiropa, bone uye kuora kweropa. Cadmium inongova imwe yemasikironi ehuni ari mumutsi hwefodya.
Kusara pasina nguva kukanganisa kusvuta kwako kunowedzera. Inokupa chimwe chinhu kupfuura chirwere uye pakupedzisira-kufa.
Sources:
Mutengi wepepaiti yeCadmium. 28 November, 2006. US Environmental Protection Agency.
Cadmium Factsheet. April, 2010. Zvivako zveDaase Control.
Public Health Statement yeCadmium. July, 1999. Sangano reMatambudziko Ekutema Zvirwere uye Darease Registry.