Performance of a 2,4-DNPH coated annular denuder/HPLC system for formaldehyde monitoring in air

被引：16

作者：

Possanzini, M ^{[1
]}

Di Palo, V ^{[1
]}

机构：

[1] CNR, Ist Inquinamento Atmosfer, Area Ric Roma, I-00016 Monterotondo, Roma, Italy

来源：

CHROMATOGRAPHIA | 1999年 / 49卷 / 3-4期

关键词：

column liquid chromatography; formaldehyde in air; annular denuder; 2,4-dinitrophenylhydrazine (DNPH);

D O I：

10.1007/BF02575279

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

The performance of annular denuders coated with 2,4-dinitrophenylhydrazine for collection of atmospheric HCHO has been evaluated by HPLC/UV analysis of samples coming from laboratory tests and field experiments. A number of parameters, such as collection efficiency at varying air humidity, detection limit, operative capacity and temporal self-consistency have been investigated to optimize the denuder behaviour under different weather conditions and to obtain short-term concentration profiles of HCHO. Deviations between measurements made simultaneously by the DNPH denuder method and differential optical absorption spectrometry (DOAS) have been found to average approximately 30 % in the 0-5 ppb HCHO concentration range.

引用

页码：161 / 165

页数：5

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