武汉月湖水体和表层沉积物中25种半挥发性有机污染物分布特性  

Distribution characteristics of 25 semi-volatile organic compounds in water and surface sediment from Lake Yuehu in Wuhan,China

作　　者：宋慧婷[1,2] 贺锋[2] 成水平[2] 梁威[2] 张丽萍[2] 吴振斌[2] 

机构地区：[1]湖北大学资源环境学院,武汉430062 [2]中国科学院水生生物研究所淡水生态与生物技术国家重点实验室,武汉430072

出　　处：《湖泊科学》2010年第4期521-526,共6页Journal of Lake Sciences

基　　金：国家自然科学基金项目(50808069);国家杰出青年科学基金项目(39925007);国家重大科技专项"受污染城市水体修复技术与示范工程"项目(2002AA60121);湖北省教育厅科研项目(Q20081001;Q20091010);湖北省科技攻关重大项目(2006AA305A037);武汉市科技局科技攻关项目(200960323123);中国科学院知识创新工程重要方向项目(KSCX2-SW-102)资助

摘　　要：2006年4月在武汉月湖采集了8个样点的水样和表层沉积物样品,采用气-质联用技术分析了样品中25种半挥发性有机污染物(SVOCs)的含量,探讨月湖受有机物污染的程度.水样中25种半挥发性有机污染物总浓度为564.04-1209.41ng/L,平均值为965.64ng/L.沉积物中总浓度为8500.26-23347.20ng/g(DW),平均值为14832.04ng/g(DW).邻苯二甲酸酯类物质是月湖的主要污染物,其中,邻苯二甲酸乙基己基酯和邻苯二甲酸二丁酯含量最高.多环芳烃、硝基甲苯、异佛尔酮等均有不同程度检出,靠近以前的排污口的样点浓度最高.沉积物中25种半挥发性有机污染物的含量大约是水体中含量的15倍,具有潜在生态风险.Eight samples from lake water and eight from surface sediment were collected in the Lake Yuehu, Wuhan City, China in April, 2006. 25 semi-volatile organic compounds （SVOCs） were analyzed by GC-MS. The concentrations of the water samples were from 564.04 to 1209.41ng/L with the mean of 965.64ng/L. The concentrations of surface sediment samples were from 8500.26 to 23347.20ng/g （DW） with the mean of 14832.04ng/g （DW）. Phthalic acid ester was the major pollutants. Phthalic acid ethyl hexyl ester and Phthalic acid dibutyl ester were the highest pollutants. Polyeyclic aromatic hydrocarbon, Methyl nitrobenzene and Isophorone have been detected in the water and sediment samples. The highest concentration of the pollutants was found neare the previous sewage ouffall. The total concentration of 25 SVOCs in surface sediment was nearly 15 times of that in water.

关 键 词：月湖 水体 表层沉积物 半挥发性有机污染物(SVOCs) 

分 类 号：X524[环境科学与工程—环境工程]