Kev koom tes ntawm pej xeem hauv kev xa rov qab cov khoom siv hluav taws xob thiab hluav taws xob thiab cov khoom siv hauv tsev yog qhov tseem ceeb heev kom ntseeg tau tias qhov kev pov tseg kawg no yog qhov zoo rau ib puag ncig. Nws yog ib qho tseem ceeb heev uas txoj cai lij choj tso cai rau cov neeg siv khoom koom nrog hauv lub luag haujlwm sib koom rau lub neej ntawm cov khoom.
Kev siv cov txheej txheem no tshwm sim los ntawm kev sau cov khoom pov tseg ntawm cov chaw teev tseg rau cov khib nyiab no, zam kev pov tseg rau hauv cov khib nyiab ib txwm muaj lossis kev siv rov qab. Yuav kom kev xa rov qab mus rau qhov qub tau zoo, nws yog ib qho tseem ceeb uas pej xeem ua raws li qee cov lus qhia thaum pov tseg cov khoom no, xws li kev sib cais cov khoom siv hluav taws xob thiab hluav taws xob ntawm lwm hom khib nyiab, xyuas kom meej tias lawv raug kaw thiab huv si, thiab pov tseg lawv kom zoo thaum twg ua tau.
Ua ntej pov tseg, nws raug pom zoo kom rho tawm cov ntaub ntawv tus kheej uas muaj nyob rau hauv cov khoom siv, nco ntsoov tias tsis muaj txoj hauv kev los rov qab tau cov khoom tom qab lawv tau raug pov tseg. Kev pov tseg cov khoom siv hluav taws xob thiab hluav taws xob kom raug pab tiv thaiv kev ua qias tuaj ntawm dej thiab av, vim tias ntau yam ntawm cov khoom no muaj cov khoom lom xws li mercury thiab cadmium. Ntxiv mus, nws tiv thaiv kev ua qias tuaj ntawm huab cua, tshwj xeeb tshaj yog nyob rau hauv cov khoom siv uas siv cov pa roj txias, xws li lub tub yees thiab lub tshuab cua txias, uas, thaum xau, tuaj yeem ua rau lub txheej ozone puas tsuaj.
Nws yog ib qho tseem ceeb uas yuav tsum hais tias pej xeem tsis tas yuav them nqi rau kev pov tseg kom raug, vim tias kev xa rov qab tau txais nyiaj los ntawm cov chaw tsim khoom thiab cov neeg xa khoom tuaj. Los ntawm kev pov tseg cov khib nyiab kom raug, cov neeg siv khoom pab txhawb rau kev txuag ib puag ncig thiab kuj tau txais chaw ntau dua hauv tsev los ntawm kev pov tseg cov khoom siv qub lossis tsis siv.
Kev tsa kom muaj kev paub txog kev xa rov qab thiab kev txhawb kom pej xeem koom nrog tsis yog tsuas yog rau cov tsev kawm ntawv xwb, tab sis yuav tsum nthuav dav mus rau cov lag luam thiab txhua tsev neeg. Nrog rau kev yuav cov khoom siv thev naus laus zis tshiab ntau zaus, nws yog ib qho tseem ceeb uas yuav tsum pov tseg cov khoom siv qub kom raug, tsis yog rau kev pab tus kheej xwb, tab sis kuj rau kev pab pawg thiab ib puag ncig.
Los ntawm kev koom nrog hauv kev xa khoom rov qab, pej xeem pab txhawb rau kev siv cov khoom siv thiab cov khoom siv los ntawm cov khoom siv no hauv kev tsim cov khoom tshiab, txhawb kev lag luam ncig thiab txo qhov xav tau los rho tawm cov khoom siv ntuj. Ua li no, txhua tus yeej: ib puag ncig, cov tuam txhab, thiab lub zej zog nws tus kheej, uas tau txais txiaj ntsig los ntawm kev tsim khoom ruaj khov thiab muaj lub luag haujlwm ntau dua.
