珠江三角洲经济区主要城市不同功能区大气气溶胶中优控多环芳烃污染评价

Evaluation on pollution of priority polycyclic aromatic hydrocarbons in aerosols at different function areas of main cities in Pearl River Delta economic region

以WHO的苯并(a)芘标准和珠江三角洲经济区大气气溶胶中优控多环芳烃春季区域性背景为依据 ,对区内主要城市中不同功能区大气气溶胶中优控多环芳烃的污染程度进行了评价。结果表明 ,在相同的功能区 ,冬春季节大气气溶胶中多环芳烃含量及污染程度较夏季的高 ;同为冬春季节 ,商业、居民集中和交通复合功能区的PAHs污染最为严重 ,交通或居民集中单一功能区次之 ,工业区较轻 ;同为夏季 ,工业区的PAHs污染程度较大 ,而商业或交通单一功能区较小。还提出了一个尝试性多参数公式。并建议在常规大气环境监测的基础上 。

The pollution degree of priority PAHs in aerosols at different function areas of main cities of PearlRiver Delta economic region is assessed with the standards of made public by WHO and regional background of priority PAHs in aerosols in Pearl River Delta economic region in spring. It is shown that the concentrations and pollution degreeof priority PAHs in aerosols in winter and spring were higher than those in summer at the same function area. It is considered that there were serious pollution of PAHs at complex area of commerce, crowded population and traffic, and pollution of PAHs at individual area of commerce, crowded population and traffic and light pollution of PAHs at industrial area in winter and spring. It is believed that the pollution degree of priority PAHs in aerosols at industrial area was greater than that at individual function area of commerce and traffic. A trial formula of multi parameter and suggestion that monitoring organic toxic pollutants must be enhanced based on conventional air environmental monitoring are presented in this paper.