Seasonal variations of carboxylic acids and their contributions to the rainwater acidity: A case study of Guiyang and Shangzhong, China

• 来源期刊: 科学通报(英文版)
• 学科: 地球科学
• 年，卷（期）: 2010,（16）
• 所属期刊栏目: ARTICLES
• 页码范围: 1667-1673
• 页数: 7页
• 分类号: N
• 语种: 英文

摘要

Low molecule weight carboxylic acids are ubiquitous and important chemical constituents in the troposphere.Seven carboxylic acids in the rainwater of Guiyang and Shangzhong were simultaneously determined by ion chromatography from April 2006 to April 2007.Formic, acetic and oxalic acids were found to be the predominant carboxylic acids.Their volume weighted average concentration (VWA) in the rainwater of Guiyang were 14.24 μmol/L, 9.35 μmol/L and 2.79 μmol/L, respectively;as compared to 4.95 μmol/L, 1.35 μm...