| 粤港澳地区大气中有机污染物初步研究 |
| 摘要点击 1210 全文点击 2576 投稿时间：1998-11-22 |
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| 中文关键词 粤港澳 VOCs 气溶胶 有机污染物 大气环境 大气监测 |
| 英文关键词 Guangzhou Hong Kong Macao VOCs aerosol organic compounds atmospheric environment atmospheric determination |
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| 中文摘要 |
| 用Tekmar多填层吸附管连接TMP-1500空气采样器采集VOCs样,然后在Tekmar6032/3000吹扫捕集系统与GC/MSD联用仪上分析;用TH-1000L型大容量采样器收集TSP气溶胶样,TSP滤膜经抽提分离后,烷烃和芳烃进行GC/MSD分析,研究了广州、香港和澳门地区大气挥发有机物(VOCs)和气溶胶可溶有机物的组成与成因。结果表明,3城市大气中普遍检出BTEX、氯代烃、单萜烯、多环芳烃、甾萜等代表人为污染、地质尘埃和植被散发物等来源的有机污染物,其中汽车尾气排放物成因占优势。广州、香港和澳门3城市比较,澳门地区受人为污染最严重。 |
| 英文摘要 |
| The composition and origin of the volatile and semi-volatile organic compounds exist in air and aerosol samples in Guangzhou, Hong Kong and Macao were analyzed and discussed in the present paper. Volatile organic compounds(VOCs)were absorpted in a Tekmar absorption sampling tube by using a TMP-1500 air sampler, and analyzed on an integrated system of Tekmar 6032-aerosampler/3000 purge & trap concentrator interfaced with a HP5972 AGC/MSD. Aerosol samples(total suspended particulate, TSP)were collected with TH1000L High-volume TSP samplers. Semi-volatile organic compounds in aerosol, after ultrasonic extraction from glass-fiber filter and further separation with column chromatography, were also quantitatively analyzed with GC/MSD. The results showed that organic pollutants, such as BTEX, halohydrocarbons, monoterpenes, PAHs, steranes and hopanes, were widely detected in the ambient atmospheric of the three cities. The main sources of these compounds include anthropogenic emissions, geological dust and flor al/plant emissions. Vehicle exhaust emissions were suggested to be the predominant pollution sources for the organic pollutants in the ambient atmosphere. The anthropogenic air pollution in Macao was found to be more serious than that in Hong Kong and Guangzhou. |
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