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Does Aqueous-Phase Oxidation of HCHO Opens a Pathway to Formic Acids in Atmosphere?
Xu Gang; Lee XinQing; Shao HongBo; Lv YingChun
2010
Source PublicationCLEAN – Soil, Air, Water
Volume38Issue:11Pages:1006–1009
Abstract

Formic acid is the major contributor to acid rain in some regions but its sources are not fully understood. We investigated the aqueous-phase reactions of HCHO (aq) and OH. radicals at enlarged rainwater pH values (2.49–5.89) in Guiyang, China from May 2006 to April 2007. Our results show that there were no significant correlation between the [HCOOH]t/[HCHO] (aq) and the rainwater pH. The ratio did not appear to vary consistently as a function of rainwater pH as predicted by theoretical model. In addition, we saw no clear evidence that oxidation of HCHO (aq) would produce significant HCOOH (aq) which indicates this reaction may be only a minor contribution to the budget of HCOOH (g) in atmosphere. Further investigation is strongly suggested to be carried out in field cloud water, fog water, or rainwater because the ratios would be diverged from equilibrium value as a result of other chemical or physical processes.

Subject Area环境地球化学
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.gyig.ac.cn/handle/352002/4946
Collection环境地球化学国家重点实验室_环境地球化学国家重点实验室_期刊论文
Recommended Citation
GB/T 7714
Xu Gang,Lee XinQing,Shao HongBo,et al. Does Aqueous-Phase Oxidation of HCHO Opens a Pathway to Formic Acids in Atmosphere?[J]. CLEAN – Soil, Air, Water,2010,38(11):1006–1009.
APA Xu Gang,Lee XinQing,Shao HongBo,&Lv YingChun.(2010).Does Aqueous-Phase Oxidation of HCHO Opens a Pathway to Formic Acids in Atmosphere?.CLEAN – Soil, Air, Water,38(11),1006–1009.
MLA Xu Gang,et al."Does Aqueous-Phase Oxidation of HCHO Opens a Pathway to Formic Acids in Atmosphere?".CLEAN – Soil, Air, Water 38.11(2010):1006–1009.
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