Hav nyob ntawd! Raws li tus neeg muag khoom octyl phenol, Kuv tau txais ntau cov lus nug tsis ntev los no txog dab tsi mus nrog octyl phenol thaum nws tso tawm rau hauv qhov chaw. Yog li, kuv xav tias kuv yuav rhuav tshem cov tshuaj lom neeg uas muaj peev xwm ua rau cov khoom sib xyaw no tuaj yeem nkag mus rau ntawd.
Ua ntej tshaj, cia peb tham me ntsis txog octyl phenol. Nws yog ib qho tshuaj uas siv rau hauv ib pawg ntawm kev lag luam sib txawv, xws li hauv kev tsim cov tshuaj detergents, emulsifiers, thiab txawm tias qee hom yas. Tab sis thaum nws ua rau nws txoj kev mus rau hauv huab cua, nws yog nyob rau hauv ib tug tag nrho cov tshiab ballgame.
Ib qho kev tshwm sim ntau tshaj plaws uas octyl phenol tuaj yeem ntsib hauv huab cua yog oxidation. Cov huab cua yog tag nrho ntawm oxidants, zoo li hydroxyl radicals (OH•). Cov me nyuam no yog super reactive. Thaum ib qho octyl phenol molecule ua pob rau hauv hydroxyl radical, nws tuaj yeem pib cov saw ntawm cov tshuaj tiv thaiv. Cov hydroxyl radical feem ntau yuav tawm tsam lub nplhaib uas muaj ntxhiab hauv octyl phenol. Qhov no ua rau kev tsim cov phenoxy radical thiab dej. Cov phenoxy radical tuaj yeem tshwm sim ntxiv nrog rau lwm cov pa oxygen - uas muaj hom nyob hauv huab cua. Piv txwv li, nws tuaj yeem cuam tshuam nrog cov pa oxygen molecular (O₂) los tsim cov peroxy radicals. Cov peroxy radicals no kuj yog cov reactive heev thiab tuaj yeem ua rau hnov mob nrog lwm cov pa phem lossis cov molecules ruaj khov hauv qhov chaw.
Lwm qhov ua tau tshwm sim yog photolysis. Lub hnub lub rays tsis tu ncua ua rau huab cua, thiab lawv tuaj yeem muab lub zog txaus los rhuav tshem cov tshuaj lom neeg hauv octyl phenol. Thaum octyl phenol absorbs lub teeb ntawm txoj cai wavelength, nws tuaj yeem tawg mus rau hauv cov khoom me me. Qee qhov ntawm cov khoom tawg no yuav ua rau muaj kev cuam tshuam thiab tuaj yeem koom nrog lwm yam tshuaj lom neeg. Piv txwv li, yog tias daim ntawv cog lus nyob rau sab octyl - cov saw tawg, nws tuaj yeem tsim cov alkyl radical. Qhov no alkyl radical tom qab ntawd tuaj yeem hnov mob nrog oxygen los ua ib qho alkyl peroxy radical, uas zoo ib yam li peb pom hauv cov tshuaj tiv thaiv oxidation.
Tam sim no, octyl phenol kuj tuaj yeem hnov mob nrog lwm cov pa phem hauv huab cua. Ib qho kuab paug zoo li no yog nitrogen oxides (NOₓ). Nitrogen oxides raug tso tawm los ntawm tej yam xws li cov pa tsheb thiab cov txheej txheem kev lag luam. Thaum octyl phenol los rau hauv kev sib cuag nrog nitrogen dioxide (NO₂), nws tuaj yeem tsim nitro - hloov derivatives. Cov nitro - hloov cov tebchaw no feem ntau muaj tshuaj lom thiab tsis tu ncua hauv lub neej piv rau thawj octyl phenol. Cov tshuaj tiv thaiv ntawm octyl phenol thiab NO₂ yuav koom nrog kev sib ntxiv ntawm ib pawg nitro (-NO₂) rau lub nplhaib uas muaj ntxhiab ntawm octyl phenol molecule.
Ntxiv nrog rau cov tshuaj tiv thaiv no, octyl phenol tuaj yeem raug hydrolysis hauv qee yam mob. Txawm hais tias huab cua feem ntau tsis yog lub neej ntub dej heev, tseem muaj cov dej vapor me me tam sim no. Nyob rau hauv lub xub ntiag ntawm dej thiab nyob rau hauv txoj cai pH tej yam kev mob, ester los yog ether linkages nyob rau hauv ib co octyl phenol derivatives tuaj yeem tawg. Cov tshuaj tiv thaiv hydrolysis no tuaj yeem ua rau tsim cov khoom sib txuas yooj yim, uas yuav yooj yim dua degraded los yog tshem tawm ntawm qhov chaw.
Nws yog ib qho tseem ceeb kom nco ntsoov tias qhov tshwm sim tiag tiag thiab tus nqi ntawm cov tshuaj tiv thaiv no nyob ntawm ob peb yam. Cov concentration ntawm octyl phenol nyob rau hauv cov huab cua, muaj cov reactants zoo li oxidants thiab cov pa phem, thiab lub neej tej yam kev mob xws li kub, av noo, thiab tshav ntuj siv lub luag hauj lwm. Piv txwv li, nyob rau hauv lub nroog uas muaj kuab paug nrog cov qib siab ntawm NOₓ thiab lub hnub ci muaj zog, cov tshuaj tiv thaiv ntawm octyl phenol nrog cov pa phem no thiab los ntawm photolysis yuav muaj ntau dua.
Kev nkag siab txog cov tshuaj chemical no tsis yog rau kev tshawb fawb xwb. Nws muaj tiag - ntiaj teb cuam tshuam. Rau peb ua tus xa khoom, nws pab peb nkag siab txog kev cuam tshuam lub neej ntawm peb cov khoom. Tom qab ntawd peb tuaj yeem ua haujlwm nrhiav txoj hauv kev los txo qis kev tso tawm ntawm octyl phenol mus rau hauv cov huab cua lossis txhim kho kev ua neej zoo dua.
Yog tias koj xav kawm ntxiv txog cov kev ntsuam xyuas tshwj xeeb ntsig txog octyl phenol thiab nws txoj kev ua neej, koj tuaj yeem tshawb xyuas qhov txuas no:4-testsdfgsdfg ua. Nws muab qee yam hauv - cov ntaub ntawv tob uas tej zaum yuav muaj txiaj ntsig.
Tam sim no, kuv paub tag nrho cov lus no hais txog tshuaj tiv thaiv tej zaum yuav zoo li me ntsis kev, tab sis nws yog tag nrho ib feem ntawm kev xyuas kom meej tias peb siv thiab muab octyl phenol nyob rau hauv lub feem ntau lub luag hauj lwm txoj kev. Yog tias koj nyob hauv kev ua lag luam rau octyl phenol, txawm tias rau kev tshawb fawb lub hom phiaj lossis rau kev lag luam, peb nyob ntawm no los pab. Peb tau txais ntau yam ntawm siab - zoo octyl phenol cov khoom uas ua tau raws li cov qauv nruj.
Yog tias koj tab tom nrhiav qhov chaw octyl phenol rau koj lub lag luam, tsis txhob yig mus cuag. Peb npaj siab los tham txog koj cov kev xav tau tshwj xeeb thiab peb tuaj yeem muab cov kev daws teeb meem zoo tshaj plaws rau koj li cas. Txawm hais tias koj xav tau ib qho me me rau kev sim sim lossis qhov loj - scale mov rau cov txheej txheem kev lag luam, peb tau txais koj them. Cia peb pib sib tham thiab saib seb peb tuaj yeem ua haujlwm ua ke li cas.
Cov ntaub ntawv
- Atkinson, R. (1990). Gas - theem Tropospheric Chemistry ntawm Organic Compounds: Kev Ntsuam Xyuas. Tshuaj Ntsuam Xyuas, 90(6), 857 - 888.
- Finlayson - Pitts, BJ, & Pitts, JN (2000). Chemistry ntawm Upper thiab Lower Atmosphere: Theory, Experiments, and Applications. Academic Press.
