Raws li cov ntaub ntawv tshiab tshaj plaws ntawm kev lis kev cai, Tuam Tshoj txoj kev lag luam rau dichloromethane (DCM) thiab trichloromethane (TCM) thaum Lub Ob Hlis 2025 thiab ob lub hlis thawj zaug ntawm lub xyoo tau qhia txog cov qauv sib txawv, uas qhia txog kev hloov pauv ntawm kev thov thoob ntiaj teb thiab kev muaj peev xwm tsim khoom hauv tsev.
Dichloromethane: Kev xa khoom mus rau txawv teb chaws tsav kev loj hlob
Thaum Lub Ob Hlis Ntuj xyoo 2025, Tuam Tshoj tau xa tawm 9.3 tons ntawm dichloromethane, uas yog qhov nce ntxiv 194.2% xyoo-rau-xyoo. Txawm li cas los xij, kev xa tawm tag nrho rau Lub Ib Hlis-Lub Ob Hlis Ntuj xyoo 2025 muaj tag nrho 24.0 tons, poob 64.3% piv rau lub sijhawm tib yam hauv xyoo 2024.
Kev xa khoom tawm tau hais ib zaj dab neeg txawv. Lub Ob Hlis pom 16,793.1 tons ntawm DCM raug xa tawm, nce 74.9% xyoo-rau-xyoo, thaum cov khoom xa tawm tag nrho rau ob lub hlis thawj zaug tau txog 31,716.3 tons, nce 34.0%. Kaus Lim Qab Teb tau tshwm sim ua qhov chaw xa khoom loj tshaj plaws hauv lub Ob Hlis, xa khoom tuaj 3,131.9 tons (18.6% ntawm tag nrho cov khoom xa tawm), ua raws li Qaib Cov Txwv (1,675.9 tons, 10.0%) thiab Indonesia (1,658.3 tons, 9.9%). Rau Lub Ib Hlis-Lub Ob Hlis, Kaus Lim Qab Teb tseem khaws nws txoj kev coj nrog 3,191.9 tons (10.1%), thaum Nigeria (2,672.7 tons, 8.4%) thiab Indonesia (2,642.3 tons, 8.3%) tau nce qib.
Qhov kev nce siab ntawm kev xa khoom DCM qhia txog Tuam Tshoj txoj kev nthuav dav ntawm kev tsim khoom thiab kev sib tw nqi hauv kev lag luam thoob ntiaj teb, tshwj xeeb tshaj yog rau cov tshuaj yaj hauv kev lag luam thiab kev siv tshuaj. Cov kws tshuaj ntsuam xyuas hais tias kev loj hlob no yog vim muaj kev thov ntau ntxiv los ntawm cov teb chaws tshiab thiab kev hloov kho cov khoom siv hauv cov lag luam tseem ceeb hauv Es Xias.
Trichloromethane: Kev Xa Khoom Tawm Mus Rau Lwm Lub Tebchaws Qhia Txog Kev Sib Tw Hauv Kev Lag Luam
Kev lag luam Trichloromethane tau kos duab tsis muaj zog. Thaum Lub Ob Hlis 2025, Tuam Tshoj tau xa tawm tsuas yog 0.004 tons ntawm TCM, thaum kev xa khoom poob qis 62.3% xyoo-rau-xyoo mus rau 40.0 tons. Kev xa khoom tag nrho Lub Ib Hlis-Lub Ob Hlis zoo li qhov sib txawv no, poob qis 100.0% mus rau 0.004 tons, nrog rau kev xa khoom poob qis 33.8% mus rau 340.9 tons.
Kaus Lim Qab Teb yog lub teb chaws uas xa khoom mus rau TCM ntau tshaj plaws, thiab nws tau txais 100.0% ntawm cov khoom xa tuaj thaum Lub Ob Hlis (40.0 tons) thiab 81.0% (276.1 tons) hauv ob lub hlis thawj zaug. Argentina thiab Brazil txhua tus suav txog 7.0% (24.0 tons) ntawm tag nrho thaum Lub Ib Hlis-Lub Ob Hlis.
Qhov kev poob qis ntawm kev xa khoom TCM qhia tau tias qhov kev thov thoob ntiaj teb tau txo qis, tej zaum yuav cuam tshuam nrog cov cai ib puag ncig uas tshem tawm nws cov kev siv hauv cov tub yees thiab kev tswj hwm nruj dua ntawm cov ntawv thov cuam tshuam nrog chlorofluorocarbon (CFC). Cov neeg saib xyuas kev lag luam sau tseg tias Tuam Tshoj txoj kev tsom mus rau lwm txoj hauv kev ntsuab dua yuav txwv tsis pub muaj kev tsim khoom thiab kev lag luam TCM hauv lub sijhawm nruab nrab.
Kev Cuam Tshuam ntawm Kev Lag Luam
Qhov kev sib txawv ntawm DCM thiab TCM qhia txog cov qauv dav dua hauv kev lag luam tshuaj lom neeg. Txawm hais tias DCM tau txais txiaj ntsig los ntawm nws qhov kev ua tau ntau yam hauv kev tsim khoom thiab cov kuab tshuaj, TCM ntsib teeb meem vim muaj kev nyuaj siab rau kev ruaj khov. Lub luag haujlwm ntawm Tuam Tshoj ua tus xa khoom loj ntawm DCM yuav muaj zog dua, tab sis cov ntawv thov tshwj xeeb ntawm TCM yuav pom kev poob qis txuas ntxiv yog tias tsis muaj kev siv tshiab hauv kev lag luam tshwm sim.
Cov neeg yuav khoom thoob ntiaj teb, tshwj xeeb tshaj yog nyob rau hauv Asia thiab Africa, yuav cia siab rau cov khoom siv DCM ntawm Suav teb ntau ntxiv, thaum cov lag luam TCM yuav hloov mus rau cov chaw tsim tshuaj tshwj xeeb lossis cov cheeb tsam uas tsis nruj heev.
Cov Ntaub Ntawv Tau Los: Tuam Tshoj Kev Lis Kev Cai, Lub Ob Hlis 2025
Lub sijhawm tshaj tawm: Plaub Hlis-17-2025