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• 中国百强报刊
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• 中国科学引文数据库源刊
• CN 62-1072/P
• ISSN 1000-0240
• 创刊于1979年
• 主管单位：中国科学院
• 主办单位：中国科学院寒区旱区
•                  环境与工程研究所
•                  中国地理学会

• 研究论文 •

### 生物有机酸的来源及其测试分析方法

1. 中国科学院寒区旱区环境与工程研究所冰芯与寒区环境开放研究实验室, 甘肃兰州730000
• 收稿日期:1999-09-01 修回日期:1999-12-15 出版日期:2000-08-25 发布日期:2012-04-26
• 基金资助:
中国科学院"九五"重大项目(KZ951-A1-402-03);国家自然科学基金项目(49871022);中国科学院兰州冰川冻土研究所天山冰川观测试验站站长基金和中国博士后基金会博士后基金的资助

### Organic Acids: A Review for Their Sources and Measurements

LI Xin-qing(LEE Xinqing), QIN Da-he, REN Jia-wen, ZHOU Hui

1. Laboratory of Ice Core and Cord Regions Environment, CAREERI, CAS, Lanzhou Gansu 730000 China
• Received:1999-09-01 Revised:1999-12-15 Online:2000-08-25 Published:2012-04-26

Abstract: Current studies on organic acid sources and determination methods are reviewed. The sources include emissions from vegetation, biomass burning, automobile exhaust. oxidation in the atmosphere of alkenes and other hydrocarbons. anthropogenic pollution as well as emission of formicine ants. The ratio of formic to acetic is employed to identify the sources of organic acids. The ratio is less than 1 for the organic acid sources relating to human activities. Whereas it will be larger than 1 for natural sources. Determination of organic acids has to face the hurdles from the acid’s volatility. contamination susceptibility and trace concentration. Although the analyzing principles are common. analyzing methods are different for different samples that have different anionic components, owing to the difference in ion exchange columns, eluent solution and working conditions for separation of anions. The detection limit for organic acids depends not only on the instrument and analytical conditions. but also on the specific species and its concentration. The detection limits of formic and fluoride are lower than that of acetic and MSA. Similarly. analytical errors also dependent on instrument. analytical method. species to be determined and its concentration, as well as its detection limit. Corresponding to their detection limits. the analytic uncertainties for formic and fluoride are lower than that for acetic and MSA. At present the best method enables the analytical error lower than about 3%-5% for organic acids.

• P343.6