南宁城市内河水体和表层沉积物中多环芳烃分布特征  

Distribution Characteristics of PAHs in Water and Surface Sediments from the Rivers of Nanning City

作　　者：梁柳玲 邓超冰 廖平德 杨安平 

机构地区：[1]广西壮族自治区环境监测中心站,广西南宁530022

出　　处：《中国环境监测》2012年第5期67-70,共4页Environmental Monitoring in China

基　　金：广西科学研究与技术开发项目(0719005-2-1A)

摘　　要：采用改进的固相萃取、加速溶剂萃取和高效液相色谱对南宁7条城市内河的水体和表层沉积物样品中6种多环芳烃的残留状况进行了分析测定。检测结果表明,水体中多环芳烃以荧蒽为主,6种多环芳烃在水体中的总残留浓度为26.8～163 ng/L,内河水体各点位苯并[α]芘均超过我国地表水环境质量标准限值,对干流水质存在一定影响。7个点位沉积物中多环芳烃总含量为118.06～416.73μg/kg,6种多环芳烃均有检出。Six polynuclear aromatic hydrocarbons （PAHs） in water and surface sediments from 7 rivers of Nanning city were determined with high performance liquid chromatography （HPLC） , and the samples were treatmented with improved solid phase extraction （SPE） and accelerated solvent extraction （ASE）. The resuhs indicated that fluoranthene was the dominant PAHs in water, and the total concentrations of PAHs in water ranged from 26.8 to 163 rig/L, concentrations of Benzol a ] pyrene are higher than the limit Concentration of environmental quality standards for surface water in the seven designated sampling sites. The total concentrations of PAHs in surface sediments ranged from 118.06 to 416.73 μg/kg, six polynuclear aromatic hydrocarbons were detected in all sediment samples.

关 键 词：南宁城市内河 多环芳烃 固相萃取 加速溶剂萃取 高效液相色谱 

分 类 号：X830.2[环境科学与工程—环境工程] X824