COLLECTION AND IDENTIFICATION OF TRACE ORGANIC-COMPOUNDS IN ATMOSPHERIC DEPOSITION FROM A SEMIRURAL SITE IN THE UK

被引:16
作者
WELCH, DI
WATTS, CD
机构
[1] WRc Environment, Medmenham Laboratory, Marlow, Bucks SL7 2HD, Henley Road
关键词
aerosol vapour samples; alkylbenzenes; gas chromatography; mass spectrometry; PAH; phenols; rainwater; Trace organic compounds;
D O I
10.1080/03067319008026926
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
The collection of rainwater, aerosol and vapour samples at a semi-rural site in the UK was achieved using a PTFE-lined wet-only rainfall collector and a high-volume filter/adsorption trap air sampler, respectively. Analysis of atmospheric deposition revealed the presence of several hundred compounds, many of which were of anthropogenic origin, e.g.: PAH, phenols and alkylbenzenes. Amounts of compounds varied from low nanograms to tens of micrograms per litre in rainwater samples and from low picograms to high nanograms per cubic metre in aerosols. Phenolic compounds were the most abundant group of organics identified in rainwater and were present at total concentrations of > 20 μg 1-1in some of the samples analysed. In the high-volume air samples most anthropogenic compounds were detected in the adsorbent rather than the filter extract. Seasonal variations in the PAH content of the adsorbent extracts were observed. The presence of siloxanes in the air samples was thought to be the result of contamination. © 1990, Taylor & Francis Group, LLC. All rights reserved.
引用
收藏
页码:185 / 198
页数:14
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