INTERCOMPARISON OF FORMALDEHYDE MEASUREMENTS IN THE TROPICAL ATMOSPHERE

被引：29

作者：

TRAPP, D ^{[1
]}

DESERVES, C ^{[1
]}

机构：

[1] UNIV STOCKHOLM,DEPT METEOROL,S-10691 STOCKHOLM,SWEDEN

来源：

ATMOSPHERIC ENVIRONMENT | 1995年 / 29卷 / 22期

关键词：

FORMALDEHYDE; CARBONYL COMPOUNDS; ANALYTICAL INTERCOMPARISON; DERIVATIZATION; DNPH-TRAPS; DIFFUSION SCRUBBER;

D O I：

10.1016/1352-2310(95)00255-W

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

An intercomparison of formaldehyde measurements at low concentrations (< 2.0 ppbv) was performed during the ASTROS '93 field campaign in Venezuela (Atmospheric Studies in the TROpical Savannah, September 1993). Formaldehyde was collected and measured by two different techniques: a porous membrane diffusion scrubber with fluorescent detection of the Hantzsch reaction product, and DNPH-traps (2,4-dinitrophenylhydrazine) followed by high performance liquid chromatography with a UV/VIS absorption detector. The time resolution for the diffusion scrubber instrument was 5 min while the DNPH-trap samples were integrated over 30-60 min. The measured concentrations range from the detection limits (0.045 ppbv for the diffusion scrubber, 0.1 ppbv for the DNPH-traps) up to 2 ppbv. The correlation coefficient between the two techniques is r(2) = 0.80 (n = 48) and the slope equals unity (1.02 +/- 0.03). Both methods are found to be suitable for field experiments in the low ppbv range of formaldehyde.

引用

页码：3239 / 3243

页数：5

共 17 条

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