Development of DNPH/HPLC method for the measurement of carbonyl compounds in the aqueous phase: applications to laboratory simulation and field measurement

被引：33

作者：

Wang, Hongli ^{[1
]}

Zhang, Xuan ^{[1
]}

Chen, Zhongming ^{[1
]}

机构：

[1] Peking Univ, State Key Lab Environm Simulat & Pollut Control, Coll Environm Sci & Engn, Beijing 100871, Peoples R China

来源：

ENVIRONMENTAL CHEMISTRY | 2009年 / 6卷 / 05期

基金：

中国国家自然科学基金;

关键词：

aqueous-phase; atmosphere; carbonyl; DNPH/HPLC method; SECONDARY ORGANIC AEROSOL; AIR-WATER EXCHANGE; OXIDATION-PRODUCTS; VINYL KETONE; CAPILLARY-ELECTROPHORESIS; LIQUID-CHROMATOGRAPHY; ATMOSPHERIC REACTIONS; RAIN WATER; FORMALDEHYDE; ALDEHYDES;

D O I：

10.1071/EN09057

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The DNPH/HPLC method for characterising monocarbonyls and dicarbonyls in the aqueous phase has been developed. A series of experiments have been carried out using eight atmospheric ubiquitous carbonyl compounds as model dissolved compounds in both acetonitrile and water solution to obtain the optimal derivatisation and analysis qualifications. Compared with the analysis of carbonyls dissolved in acetonitrile, the influence of acidity on the derivatisation efficiency should be carefully considered in determining carbonyls in water and the optimal acidity is pH 2.0. We find that methyl vinyl ketone (MVK) transforms to crotonaldehyde during the derivatisation reaction. This transformation can be controlled to a minor degree by increasing the mixing ratio of DNPH to MVK up to 100 : 1. This improved method has been satisfactorily applied to laboratory simulations and field measurements for better understanding the carbonyl chemistry in the atmosphere.

引用

页码：389 / 397

页数：9

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