Video: Peroxyacyl nitrates ua li cas?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov tshuaj tiv thaiv dawb radical catalyzed los ntawm ultraviolet lub teeb los ntawm lub hnub oxidize unburned hydrocarbons rau aldehydes, ketones, thiab dicarbonyl tebchaw, uas nws theem nrab cov tshuaj tiv thaiv tsim. tshuaj peroxyacyl radicals, uas ua ke nrog nitrogen dioxide rau tsim peroxyacyl nitrates.
Ntxiv mus, Pan ua li cas?
Peroxyacyl nitrate. Peroxyacyl nitrates los yog PANs yog ib feem ntawm photochemical smog, ua Nyob rau hauv cov huab cua thaum oxidized volatile organic tebchaw ua ke nrog nitrogen oxide. Lawv yog cov pa phem thib ob vim lawv tsim nyob rau hauv cov huab cua tom qab emission ntawm cov pa phem thawj.
Ib yam li ntawd, Photochemical smog raug tsim li cas? Photochemical smog yog ib tug sib tov ntawm cov pa phem uas yog tsim thaum nitrogen oxides thiab volatile organic tebchaw (VOCs) hnov mob rau lub hnub ci, tsim kom muaj xim av daj ntseg saum lub nroog. Nws feem ntau tshwm sim nyob rau lub caij ntuj sov, vim hais tias yog thaum peb muaj hnub ci tshaj plaws.
Tom qab ntawd, li cas lub lauj kaub tsim nyob rau hauv lub troposphere?
PAN yog tsim los ntawm oxidation ntawm non-methane volatile organic compounds (NMVOCs) nyob rau hauv lub xub ntiag ntawm NOx. NMVOCs thiab NOx muaj ob qho tib si ntuj thiab anthropogenic qhov chaw. Fossil fuel combustion yog lub hauv paus NOx, nrog rau kev koom tes ntxiv los ntawm biomass hlawv, teeb pom kev zoo thiab av (van der A li al., 2008).
Pan pollution yog dab tsi?
PAN (Peroxyacytyl nitrate) yog ib hom huab cua ua paug . Nws yog ib feem ntawm smog. PAN ua rau tib neeg lub qhov muag raug mob thiab ua phem rau koj lub ntsws. Nws kuj ua rau cov nroj tsuag puas. PAN cov ntaub ntawv thaum qee yam tshuaj sib xyaw ua ke hauv huab cua.
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