I-Arsenic yinto eyenzeka ngokwemvelo, into enetyhefu etholakala emhlabathini. I-Arsenic itholakala yedwa njengetsimbi, okanye ngokuqhelekileyo njengenkampani enjengetsimbi.
Kukho iifomu ezimbini zeArsenic
- I-arsenic ye-Organic yenziwa xa i-arsenic idibanisa ne-carbon kunye ne-hydrogen.
- I-arsenic engaqhelekanga iyenzeka xa i-arsenic idibanisa nezinto ezifana ne-oxygen, i-chlorine, nesulfure.
I-arsenic ye-Organic iyinto enobuthi ngakumbi kune-arsenic engabonakaliyo, kwaye iingxelo kubaninzi be-arsenic abantu bayabonakala kuyo, ngokubanzi ngokutya kunye namanzi.
I-arsenic engabonakaliyo yinto eyenziwa yintsimbi ye-smelting kwaye yayisetyenziswe kwixesha elidlulileyo kwiikhemikhali ezenziwe ngophando olujongene noxinzelelo lwangaphandle, nangona oku kukhankanywe kwiminyaka yamuva.
Ngaba iArsenic Yenza I-Cancer?
I-Arhente yamazwe ngamazwe yoPhando ngeCarcer iye yahlukanisa i-arsenic njenge-carcinogenic (iQela 1 isigaba) kubantu.
I-arsenic engabonakaliyo iye yaxhunyezwa kumanqamu amaninzi, kuquka:
- Umhlaza wemiphunga
- Umhlaza wesikhumba
- Umhlaza wesisu
- Umhlaza wesifo
- Umhlaza wesifo
I-arsenic engabonakaliyo yaziwa kwakhona ukuba ibangele izilonda zesikhumba, kubandakanywa nokutsalwa kwe-hyperpigmentation.
Imithombo Eqhelekileyo Yokuboniswa kweArsenic
- Umsi wesigare : I-Arsenic enee-pesticides ezisebenzisayo ekufuyweni kwefodya zihlala zixuba i-cigarettes kwaye zikhona zincinci kumsi wecuba.
- Ukutya: Umntu omdala waseMelika uthatha ama-milligram ama-arsenic ngosuku ngalunye, kunye neepesenti ezingama-80 ezivela kwenyama, intlanzi kunye neenkukhu. Ezinye iivini ziqulethe amanqanaba afanelekileyo we-arsenic ngenxa yeentlobo zepilisi ezisetyenziselwa ukulima.
- Amanzi okusela : I-arsenic igxila emanzini amanzi ngokuyinhloko ngokungena kwinqanaba. Ngamanye amaxesha amanzi angaphantsi komhlaba ahlambuluzwe ngumhlaba ovela kwindawo ephethe i-arsenic.
Iimpawu malunga neArsenic kwi-cigarette smoke
I-arsenic engabonakaliyo ifumaneka kumsi womsi wocuba kunye nokuba mhlawumbi kumsi ogqithisiweyo.
Ngokuxhomekeka kubukhulu be-particle size, i-arsenic engabonakaliyo inexesha lokuphila elilinganiselwa kwiintsuku ezithoba.
Iingxube zangaphakathi ze-arsenic ezingaqhelekanga zingaba ziphezulu kakhulu kunaphandle kwaye ziyingcingo yomsi wesithathu .
Ngokweengxelo ezivela kwiBhodi yaseCalifornia Air Resources kunye neSebe lezeMpilo, ababhemayo baphefumula malunga ne-0.8 ukuya kwi-2.4 i-microgram ye-arsenic engaphelelanga nganye kwi-cigarettes ezingama-20, malunga neepesenti ezingama-40 zazo ezifakwe kwiphepha lokuphefumula. Kwaloo mali, iipesenti ezingama-75 ukuya kuma-80 zithathwa yi-alveoli emaphaphini, eyenza ukutyalwa kwe-arsenic engabonakaliyo kwi-cigarette yomsi malunga no-30 ukuya kuma-35 ekhulwini.
I-Arsenic, kunye neminye imichiza enobuthi kwi-cigaret smoke iyabangela ababhemayo (nabangabhemi) abaphefumula ngomsi wesibini oveliswa ngumsila ovuthayo kumatshini abangela umdlavuza kunye neetyhefu.
Okwangoku, abaphandi baye bafumanisa amakhemikhali angama-7 000 kuquka i-250 eyingozi kunye ne-70 ye-carcinogen compounds in smoke smoke.
Ukuba ungumtshayi ofuna ukuyeka , imfundo malunga noko ukulindela xa uyeka ukutshaya kunye neqela elixhasa abantu abanomdla onjengaye baya kukunceda ubeke ukutshaya ngonaphakade.
Imithombo:
I-Arhente yeZifo eziNobungozi kunye neRejista yeZifo - uMnyango wezeMpilo weZizwe kunye neeNkonzo zoLuntu. Arsenic.
I-Arhente yamazwe ngamazwe okuPhando ngeCarcer. Uvavanyo olubanzi lweCarcinogenicity kubantu.
IKomiti yeBasebenzi yeBhodi yaseCalifornia yaseBalifornia Ukuchongwa koNgcaciso lweArsenic engabonakaliyo njengesiNgcilisi soMoya onobuthi. http://www.arb.ca.gov/toxics/id/summary/inorgars.pdf .