Abstract. Chromated tooj liab arsenate (CCA) yog ib qho tshuaj preservative uas tiv thaiv ntoo los ntawm rotting vim kab thiab kab mob microbial. Nws tau raug siv los ua siab-kho ntootxij li xyoo 1930. Txij li xyoo 1970s, feem ntau ntawm cov ntoo siv hauv thaj chaw nyob yog CCA-kho ntoo.
tooj liab arsenate siv rau dab tsi?
Chromated tooj liab arsenate (CCA) yog cov ntoo khaws cia uas muaj cov sib txuas ntawm chromium, tooj liab, thiab arsenic, hauv ntau qhov sib npaug. Nws yog siv rau impregnate ntoo thiab lwm yam khoom ntoo, tshwj xeeb tshaj yog cov uas npaj rau kev siv sab nraum zoov, txhawm rau tiv thaiv lawv los ntawm kev tawm tsam los ntawm microbes thiab kab.
CCA puas tseem siv?
Qhov kev siv tseem ceeb cuam tshuam rau pej xeem yog CCA tsis yog siv los kho ntoo rau cov qauv uas muaj kev sib cuag tsis tu ncua, xws li cov khoom siv hauv chaw ua si, rooj noj mov, tes tuav., decking boards, vaj rooj tog thiab rooj zaum sab nrauv. Qhov kev txhawj xeeb tseem ceeb nrog CCA yog tias nws muaj arsenic.
Puas CCA siv hauv UK?
Koj tsis tuaj yeem siv tooj liab, chromium, arsenic(CCA) hom tshuaj tua kab mob los kho ntoo hauv UK. … Yog hais tias CCA kho ntoo raug ntshuam los ntawm sab nraud EU nws tsuas yog siv tau rau kev tshaj lij thiab kev lag luam lub hom phiaj uas cov neeg siv tsis tuaj rau hauv daim tawv nqaij rov qab sib cuag nrog nws, piv txwv li txoj kev loj fencing.
Puas yog tooj liab arsenate lom?
Lub sijhawm dhau mus, chromatedtooj liab arsenate leaches los ntawm ntoo thiab mus rau hauv ib puag ncig av, qhov twg nws yuav kis tau av av thiab muaj peev xwm ua rau muaj tshuaj lom neeg raug rau pej xeem. Tsis tas li ntawd, cov neeg ua haujlwm nrog cov ntoo kho, xws li cov neeg ua haujlwm tsim kho thiab cov kws ntoo, tuaj yeem raug CCA siab.
