大气中碳氮硫化合物光化学反应的化学耦合作用
CHEMICAL COUPLING OF PHOTO-CHEMISTRY OF SOME CARBONNITROGEN SULFUR COMPOUNDS IN THE ATMOSPHERE
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摘要: 从遥远海洋到重污染地区,在很宽的大气条件下,用灵敏度分析法研究了光化学典型产物O3的形成机理及其化学耦合作用,指出了影响形成O3的重要反应,在一些条件下,O3浓度对一些重要化学反应的速率常数的归一化灵敏度系数异号,由于碳、氮化合物的化学耦合作用的非线性现象使O3生成增加。大气中一些重要的光化学产物如O3,HNO3,HCHO,H2O2等形成中,DMS的化学耦合是弱耦合.Abstract: The mechanism of formation of O3, a typical photo-chemical product, and its chemical coup-ling has been studied with sensitivity analysis under a broad range of atmospheric conditions from re-mote ocean to heavily polluted area. The influential reactions for formation of O3 are pointed out. Under certain conditions the normalized sensitivity coefficients of O3 concentration with respect to some rate constants which reactions are very important for formation of O3 switch sign. This non-lin-earity phenomena cause more O3 formed by the chemical coupling of carbon and nitrogen com-pounds . The chemical coupling of some important photochemical products as O3, HNO3, HCHO, H2O2 with respect to DMS chemistry is weak in the atmosphere.
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Key words:
- ozone /
- dimethyl sulfide /
- chemical coupling /
- senstitvity analsis
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