期刊
ENVIRONMENTAL SCIENCE & TECHNOLOGY
卷 44, 期 17, 页码 6656-6660出版社
AMER CHEMICAL SOC
DOI: 10.1021/es1008278
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资金
- Natural Environment Research Council [appraise010003] Funding Source: researchfish
- NERC [appraise010003] Funding Source: UKRI
The hygroscopicity and mass loss of aerosols initially composed of maleic acid have been investigated before and after reaction with ozone. The phase of the aerosol, solid or aqueous, during the reaction with ozone strongly affects the composition of the processed aerosol. Furthermore the loss of aerosol mass, via the production of volatile ozonolysis products, does not occur until the processed aerosol has existed as an aqueous phase aerosol. The loss rate of the aerosol mass appears to follow unimolecular first order kinetics which is consistent with the rate determining step being the cleavage of a weak hydroperoxide, or peroxide, bond 1-104 kJ moll. This speculative rate determining step, which is not based on chemical analysis, is possibly a universal feature in the ozonolysis of organic aerosol containing the alkene functionality.
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