土壤中多环芳烃的含量及风险评价方法.pdf

第四届全国农业环境科学学术研讨会论文集 20 11 年 7 月 386 土壤中多环芳烃的含量及风险评价方法许妍, 周启星( 南开大学环境科学与工程学院, 天津 300071 ) 摘要:随着城市化,工业化的发展,土壤中具有三致“致癌,致畸,致突变”作用的多环芳烃的含量日趋增加。为了定量研究 PAHs 对人群的风险,亟待确定对其进行风险评价的方法、本文比较并分析了北方地区,长三角地区, 珠三角地区和华南地区土壤中 PAHs 的含量差异, 综述了多环芳烃的致癌机理及对其进行风险评价的方法。关键词: 土壤, 多环芳烃, 风险评价 Risk assessment of polycyclic ar omatic hydrocarbons in soil X U Yan , ZHOU Qi -xing (The College of Environmental Science and Engineering of Nankai University, Tian jin 300071 ,China ) Abstract: With the development of urbanization and industrialization, the level of polycyclic aromatic hydro carbons in soil which has an effect of "carcinogenic, teratogenic, mutagenic" is increasing. For quantitative research of PAHs on the population risk, it is in great need of determining the risk assessment methods. This article compares and analyzes differ ences levels of PAHs in soil of the northern region, the Yangtze River Delta, Pearl River Delta and southern China, this article also reviews the carcinogenic mechanism of polycyclic aromatic hydrocarbons and its risk assessment methods. Keywords : soil ;polycyclic aromatic hydrocarbons ;risk assessment 多环芳烃(PolycyclicAromaticHydrocarbons ,PAHs )作为典型持久性有机污染物(POPs ), 主要是由化石燃料和生物质的不完全燃烧产生的[1] 。PAHs 是一类由 2 个或 2个以上苯环组成的物质,多苯环共轭体系使该类化合物具有高度的稳定性,在环境中难以降解。由于 PAH s 具有致癌、致畸、致突变等特性[2] 。其中的 16