辽河表层沉积物多环芳烃分布、来源及生态风险评价  

作　　者：韩菲[1,2] 郭宝东[1,2] 王英艺[3] 

机构地区：[1]辽宁省环境科学研究院,辽宁沈阳110031 [2]辽宁省流域污染控制重点实验室,辽宁沈阳110031 [3]沈阳市环境技术评估中心,辽宁沈阳110014

出　　处：《环境保护与循环经济》2010年第12期62-66,共5页environmental protection and circular economy

基　　金：辽宁省科技厅项目"辽河流域生态环境综合治理与示范工程"(2006229001);国家科技重大专项水体污染控制与治理"辽河流域水污染控制总体方案研究"(2008ZX07208-001)资助

摘　　要：检测了辽河表层沉积物中16种多环芳烃的含量，含量范围为184～2260ng／g，平均值为514ng／g，与世界其他河流、河口和海岸带相比，多环芳烃污染水平相对偏低。特征化合物荧蒽／（荧蒽＋芘）与茚并[1，2，3-c，d]芘／（茚并[1，2，3-c，d]芘＋苯并[g,h，i]苝）的比值表明辽河沉积物中的多环芳烃主要来源于燃烧产物。生态风险评价表明，辽河沉积物可能存在着对生物的潜在危害，区域多环芳烃的生态风险处于较低水平。Sixteen kinds of polycyclic aromatic hydrocarbons （PAHs） in surface sediments from Liaohe river were measured, total PAHs concentration varied from 184-2 260 ng/g, with an average of 514 ng/g. The level of PAHs in sediments was low, in comparison with values reported from other rivers, estuaries and coastal zones in the world. According to the observed molecular indices InP/（Inp＋BghiP） and FluM （FluA＋Pyr）, it can be concluded that the dominant source of PAI-Is in Liaohe river was incomplete combustion of PAHs in fossil fuel, biomass, coal, etc. The PAHs in sediments of Liaohe river may occasionally pose adverse biological effects, and low toxicological levels of PAHs were found in the studied regions.

关 键 词：多环芳烃 分布 来源 风险评价 辽河沉积物 

分 类 号：X820.4[环境科学与工程—环境工程]