Roj siv rau hauv cov motors thiab hydraulic systems. Cov khoom siv hluav taws xob qub lossis cov khoom siv uas muaj PCB capacitors . fluorescent teeb ballasts . cable rwb thaiv tsev.
Dab tsi yog txoj hauv kev thiab hom kev cuam tshuam rau PCBs?
- Txoj kev tseem ceeb ntawm kev kis rau PCBs hauv cov pej xeem yog kev noj zaub mov tsis huv, tshwj xeeb yog nqaij, ntses, thiab nqaij qaib.
- Kev ua haujlwm raug rau PCBs tshwm sim feem ntau ntawm kev nqus pa thiab dermal.
PCBs txuas rau dab tsi?
Kev tshawb fawb ntawm PCBs hauv tib neeg tau pom muaj qhov nce ntawm melanomas, mob qog noj ntshav siab, mob qog noj ntshav hauv lub zais zis, mob qog noj ntshav biliary, mob plab hnyuv, thiab mob qog noj ntshav hauv hlwb, thiab tej zaum yuav txuas rau mob qog noj ntshav misPCBs paub tias ua rau ntau hom mob qog noj ntshav hauv nas, nas, thiab lwm yam tsiaj kawm.
Dab tsi yog qhov cuam tshuam rau PCBs hauv tsev kawm?
pom qhia tias qhov chaw ntawm PCBs hauv tsev kawm ntawv feem ntau yog plasticizers hauv caulk thiab fluorescent teeb ballasts txawm hais tias lwm yam khoom kuj tseem yog qhov chawCov chaw thib ob uas tau kis los ntawm cov hauv paus ntsiab lus suav nrog cov xim, plua plav, masonry, pem teb, thiab qab nthab (Thomas li al. 2012).
PCB cov pa phem yog dab tsi?
PCBs, lossis polychlorinated biphenyls, yog khoom lag luam lossis tshuaj. … Qee zaus, cov dej nchuav thiab dej los ntawm cov chaw no lossis hluav taws xob hloov pauv tuaj yeem ua rau PCBs nkag mus rau ib puag ncig. PCBs tuaj yeem pom thoob ntiaj teb.
