Cov txheej txheem:
- Perchlorethylene siv rau dab tsi?
- Cov khoom lag luam twg muaj perchloroethylene?
- Perchlorethylene nyob qhov twg?
- Puas yog perchlorethylene tseem siv los ntxuav qhuav?
Video: Kev lag luam twg siv perchloroethylene?
2024 Tus sau: Fiona Howard | [email protected]. Kawg hloov kho: 2024-01-10 06:38
Muaj peev xwm yaj cov ntaub ntawv organic feem ntau, perchlorethylene (PCE) yog siv dav tshaj plaws qhuav ntxuav hnyavhauv Massachusetts thiab hauv tebchaws. Nws lwm qhov kev siv loj yog cov hlau degreaser, tshuaj lom neeg nruab nrab thiab cov khoom siv hauv cov khoom siv, xws li tsheb aerosol qhov chaw ntxuav thiab degreasers.
Perchlorethylene siv rau dab tsi?
Perchloroethylene yog siv rau hauv cov tshuaj aerosol rau lub tsheb tom qab muag, tshwj xeeb tshaj yog rau kev ntxuav nres, nrog rau cov tshuaj tua dej rau cov khaub ncaws, cov chaw tshem tawm thiab cov roj silicone. Nws tuaj yeem siv los ua cov kua dej insulating hauv qee qhov hluav taws xob hloov pauv hloov pauv rau polychlorinated biphenyls (PCBs).
Cov khoom lag luam twg muaj perchloroethylene?
Cov khoom siv twg tuaj yeem siv tau?
- Hlau degreasers (rau qhov pib thiab lub tshuab hluav taws xob)
- Ntawm / stain removers (rau khaub ncaws, ntaub pua plag, lossis rooj tog)
- Lubricants thiab roj.
- Hlau thiab pob zeb polishes.
- Xim thiab txheej nrog rau xim thiab txheej tshem tawm.
- Mould removers thiab anti-pwm sealants.
Perchlorethylene nyob qhov twg?
Tetrachloroethene muaj nyob hauv cov khoom siv, suav nrog qee cov xim thiab cov tshuaj tshem tawm, tshuaj tua dej, nres thiab tshuaj ntxuav ntoo, kua nplaum, thiab suede tiv thaiv.
Puas yog perchlorethylene tseem siv los ntxuav qhuav?
Perchloroethylene, lub npe hu ua perc, yog lub zog qhuav-tu hnyav heev vim nws dissolves roj thiab grime tsis cuam tshuam rau cov ntaub. Raws li tsoomfwv cov thawj coj, nws yog cov tshuaj siv ntau tshaj plaws ntawm cov ntxhua khaub ncaws qhuav thiab txij li xyoo 2016, tseem siv los ntawm 28,000 tus ntxhua khaub ncaws qhuav hauv Tebchaws Meskas.
Pom zoo:
Puas yog kev lag luam thiab kev lag luam sib txawv?
Qhov kev hloov pauv "-y" rau "-yooj yim" yog ib feem ntawm peb qhov kev sau txhua hnub. Qhov teeb meem yog tias "kev lag luam" yog ib lo lus. Yog li ntawd, lo lus raug siv thaum xav txog qhov xwm txheej tsis khoom ntawm koj ib hnub dhau ib hnub yog "
Puas yog kev lag luam lossis kev lag luam?
Qhov kev hloov pauv "-y" rau "-yooj yim" yog ib feem ntawm peb qhov kev sau txhua hnub. Qhov teeb meem yog tias "kev lag luam" yog ib lo lus. Yog li ntawd, lo lus raug siv thaum xav txog kev tibneeg hu tauj coob ntawm koj hnub-rau-hnub is "
Dab tsi yog cov txiaj ntsig cuam tshuam nrog kev lag luam dawb thiab kev lag luam thoob ntiaj teb?
Nws tsav kev lag luam loj hlob, txhim kho kev ua tau zoo, nce kev tsim kho tshiab, thiab kev ncaj ncees ntau dua uas ua raws li cov cai raws li txoj caiCov txiaj ntsig no nce ntxiv raws li tag nrho kev lag luam-exports thiab imports-nce. Kev lag luam pub dawb nce nkag mus rau cov khoom zoo dua, tus nqi qis dua .
Lub sijhawm kev lag luam kev lag luam qeeb thiab nyiaj poob haujlwm nce?
Tom qab Asmeskas kiv puag ncig, Tebchaws Asmeskas tau dhau mus kev nyuaj siab, lub sijhawm uas kev lag luam poob qis thiab poob haujlwm nce . Lub sijhawm twg uas kev lag luam qeeb qeeb? Nyob hauv kev lag luam, a Kev poob qis yog kev lag luam kev lag luam thaum muaj kev poob qis hauv kev lag luam.
Hauv kev lag luam kev lag luam?
Industrial union Industrial union Industrial unionism yog ib lub koomhaum koom ua lag luam los ntawm kev ua haujlwm los ntawm txhua tus neeg ua haujlwm hauv tib lub lag luam tau koom ua ke hauv tib lub koomhaum-tsis hais txog kev txawj lossis kev lag luam-yog li muab cov neeg ua haujlwm hauv ib qho kev lag luam, lossis hauv txhua qhov kev lag luam, muaj zog ntau dua hauv kev sib tham thiab hauv cov xwm txheej tawm tsam.
