STUDY OF THE DEGRADATION BY OZONE OF ADSORBENTS AND OF HYDROCARBONS ADSORBED DURING THE PASSIVE SAMPLING OF AIR

被引：47

作者：

CAO, XL ^{[1
]}

HEWITT, CN ^{[1
]}

机构：

[1] UNIV LANCASTER,INST ENVIRONM & BIOL SCI,LANCASTER LA1 4YQ,ENGLAND

来源：

ENVIRONMENTAL SCIENCE & TECHNOLOGY | 1994年 / 28卷 / 05期

关键词：

D O I：

10.1021/es00054a003

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The effect of ozone on four adsorbents (Tenax-TA, Tenax GR, Carbotrap, and Chromosorb 106) during the passive sampling of air has been investigated by exposure to ozone at 180 ppb for 1 week. Generally no artifact compounds were found to form on Carbotrap or Chromosorb 106. Several new peaks appeared in the chromatograms of Tenax-TA and Tenax-GR, the most significant being benzaldehyde and acetophenone. The effect of ozone on selected hydrocarbons (isoprene, benzene, toluene, p-xylene, o-xylene, alpha-pinene, and beta-pinene), adsorbed on Tenax-GR during passive sampling, was also investigated by exposure to ozone at different concentrations (60, 120, and 180 ppb) for 1 week. Minor destruction by ozone was only observed for beta-pinene (4 %) at an ozone concentration of 180 ppb.

引用

页码：757 / 762

页数：6

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