分析化学2011，Vol.39Issue(11)：1653-1658,6.DOI:10.3724/SP.J.1096.2011.01653
涂布2,4-二硝基苯肼的环形溶蚀器/滤膜系统和高效液相色谱法检测大气中二羰基化合物
Determination of Airborne Dicarbonyls by Annular Denuder/ Filter Pack System Coated with 2,4-Dinitrophenylhydrazine and High Performance Liquid Chromatography
摘要
Abstract
A HPLC method have been developed by using 2,4-dinitrophenylhydrazine (DNPH) coated annular denuder/filter pack as a sampling system for collecting the gas and particle phase of dicarbonyl compounds in atmosphere. DNPH was used as derivatizing agent to coat the denuders and the filters, when air flowed through the sampling system, the gases were absorbed and reacted with DNPH on the denuders while particles proceeded along the denuders and were collected on the filters. The samples were extracted and concentrated and then analyzed by HPLC. The sampling conditions of the system were investigated by a series of sampling experiments. The results showed that when the coating DNPH solution was 0. 47 g/L, the optimum collection efficiency was obtained at a flow rate of 4 L/min for a sampling duration of 4 - 5 h. Tedlar Bags were used to determine the collection efficiency of the glyoxal and methylglyoxal and which were 82% and 85% respectively. The method was applied to measure dicarbonyl compounds in the atmosphere.关键词
二羰基类化合物/环形溶蚀器/滤膜系统/2,4-二硝基苯肼/高效液相色谱/乙二醛/甲基乙二醛Key words
Dicarbonyls/ Annular denuder/filter pack system/ 2, 4-Dinitrophenylhydrazine/ High performance liquid chromatography/ Glyoxal/ Methylglyoxal引用本文复制引用
冯艳丽,牟翠翠,付正茹,陈颖军..涂布2,4-二硝基苯肼的环形溶蚀器/滤膜系统和高效液相色谱法检测大气中二羰基化合物[J].分析化学,2011,39(11):1653-1658,6.基金项目
本文系国家自然科学基金(No.40973071)、上海市青年科技启明星(No.09QA1402100)和上海市重点学科(No.S30109)资助项目 （No.40973071）
