期刊
INTERNATIONAL JOURNAL OF HYGIENE AND ENVIRONMENTAL HEALTH
卷 203, 期 3, 页码 275-279出版社
URBAN & FISCHER VERLAG
DOI: 10.1078/S1438-4639(04)70038-3
关键词
indoor air monitoring; carbonyl compounds; formaldehyde; 2,4-dinitrophenylhydrazine
The toxic potential of formaldehyde and other aliphatic/aromatic carbonyl compounds requires the determination of even low amounts of these compounds in indoor air. The existing DFG-method for workplace monitoring using adsorption at 2,4-dinitrophenylhydrazine (DNPH)-coated sorbents followed by HPLC-UV/DAD analysis of the extract was modified in order to decrease detection limits. The improvement included an increase in volume and rate of the air sampling, testing applicability of different adsorption materials and a decrease of the extraction volume of the hydrazones. 13 DNPH-derivatives could be separated well on a RP18-column followed by UV/DAD-detection at 365 nm. Recovery rates of 70-100 % were determined (apart from acetone with 19 %) using dynamically produced artificial carbonyl atmospheres. Detection limits of 0.05-0.4 mug/m(3) were reached by this method which are sufficient for indoor air monitoring.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据