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环境化学  2015 

大气中多环芳烃(PAHs)在松针和SPMD上的分布

Keywords: 松针,SPMD,多环芳烃,大气,珠江三角洲

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Abstract:

通过松针监测与半渗透膜被动式采样技术(SPMD),分析了我国珠江三角洲地区大气中多环芳烃的含量特征、来源及其分布,同时对这两种被动式采样技术进行了比较松针及SPMD主要富集气态多环芳烃(2—4环),气态多环芳烃在松针和SPMD样品中的总含量分别为313.9—3043.5ng·g-1和14.5—116.9ng·SPMD-1·d-1大气中多环芳烃含量的区域差异明显,珠江三角洲中部地区(广州、佛山和东莞)大气中多环芳烃的含量高,沿海地区的珠海、香港偏低,分子标志物指数表明,珠江三角洲大气中的多环芳烃主要是热成因(燃烧)来源松针和SPMD对气态多环芳烃的监测具有很好的一致性,是进行区域大气污染评价的良好生物指示物.

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