降水中甲酸和乙酸研究综述

对大气降水中甲酸和乙酸的相关研究进行了综述。介绍了过去曾采用的研究降水样品中两种有机酸的处理和分析方法,以及目前最常用的实验室分析方法。对降水中两种有机酸的浓度范围、全球时空分布以及受影响因素等相关研究工作进行了系统归纳,并且结合理论计算说明了有机酸对降水酸度的影响是不可忽视的。介绍了历史研究工作中得出的降水中两种有机酸的来源,包括天然源、人为源和有机物的二次化学转化等,以及有机酸源研究对于开展其它降水有机酸工作的研究意义。

Review of Researches on Acetate and Formate in Precipitation

A summary is made of studies about acetate and formate in precipitation across the world. Some details of sample preparation and experimental methods used in the analysis of organic acids in rainwater are given. The spatial temporal distributions of acetic and formic acids are summarized. The observed levels of these acids, together with their theoretical contributions at different levels of pH value, indicate that these acids are important contributors to the acidity of precipitation. The sources of the two organic acids, which can be categorized as natural, anthropogenic, and chemical sources, and their meaning to the other organic acid researches are discussed.