我国东部地区环境中多环芳烃的空间分布及生态风险分析

Spatial Distribution and Ecological Risk Analysis of the Polycyclic Aromatic Hydrocarbons (PAHs) in East China

在统计和整理我国部分地区水体、大气和土壤三种环境介质中多环芳烃(PAHs)含量的基础上,研究PAHs的空间分布特征、污染程度,并探讨我国环境中PAHs污染的生态风险等级.结果表明:我国PAHs在以上三种环境介质中具有明显空间分布特征,且其含量在三种环境介质中存在较高相关性;整体上,我国PAHs污染程度属中低水平,局部存在一定程度的生态风险.因此,应完善PAHs监测体系,调整不合理产业结构和布局,以控制PAHs污染.

As a member of Persistent Organic Pollutants(POPs) family,Polycyclic Aromatic Hydrocarbons were widely monitored in East China from many samples of water,soil and atmosphere.On the base of data collecting and analysis,the spatial distribution characteristics and the ecological risk of PAHs were analyzed and discussed in this paper.The results showed that the spatial distribution of the PAHs was obviously different due to the geographical condition and energy structure in different areas.On the whole,the PAHs pollution in East China was in a low level.However,some areas could exist high ecological risk,such as Liaoning,Shanxi and Tianjin,and there were no any ecological risk in the provinces with low economical development level,such as Xiajiang,Tibet,Qinghai,Gansu,Ningxia and Guizhou.