连环湖牙门气泡沉积物重金属演化和污染研究  

Evolvement and Pollution of Heavy Metals in Core Sediments from Yamenqi Lake in Lianhuan Lake,China

作　　者：肖海丰[1] 臧淑英[1] 关莹[1] 刘少军[1] 徐海凤[1] 孙清展[1] 王京京[1] 李苗[1] 

机构地区：[1]哈尔滨师范大学地理科学学院,黑龙江省普通高等学校地理环境遥感监测重点实验室,哈尔滨150025

出　　处：《环境科学》2013年第8期3088-3094,共7页Environmental Science

基　　金：国家自然科学基金项目(40972115);国家自然科学基金重点项目(41030743);黑龙江省高等学校科技创新团队建设计划项目(2010td10)

摘　　要：2010年8月在牙门气泡的湖心位置采集了柱状沉积岩心.采用HNO3-HClO4-HF联合消解并运用ICP-MS测试了柱状沉积岩心中金属元素Cr、Cu、Mn、Ni、Fe、Pb、Zn、Cd、Al、Ba、Ca、K、Li、Mg、Na和Sr的含量,结合沉积岩心年代测定,研究了该湖区沉积物重金属元素演化特征及污染历史.应用富集系数法探讨了湖泊重金属的污染特征.结果表明,1950年以前各元素含量变化趋势平稳,1950～1990年间波动较大,1990年以后金属元素Mn、Zn、Cd、Pb、Fe、Ni、Cr、Cu、Ca、Li和Sr浓度明显增加.牙门气泡重金属元素Mn、Zn、Cd、Pb存在轻微污染,而Ni、Cr和Cu无污染.One sediment core was obtained from the center of Yamenqi Lake at the Songnen Plain in eastern China in August 2010 using a gravity corer.The sediment samples were digested using HNO3-HClO4-HF.Concentrations of the metals Cr,Cu,Mn,Ni,Fe,Pb,Zn,Cd,Al,Ba,Ca,K,Li,Mg,Na and Sr were determined using inductively coupled plasma-mass spectrometry（ICP-MS）.With the dating approach,the characteristics and polluted history of heavy metals in lake sediments were determined.The heavy metal pollution of sediment was discussed based on the enrichment factor.The results are listed as following：① the contents of all elements had a smooth variation trend before 1950,and fluctuated severely from 1950 to 1990.The contents of Mn,Zn,Cd,Pb,Fe,Ni,Cr,Cu,Ca,Li and Sr increased obviously since 1990.② Mn,Zn,Pb and Cd showed light contamination degree.Contents of Ni,Cr and Cu were below the contamination level.

关 键 词：沉积物 重金属演化 污染 牙门气泡 富集系数 

分 类 号：X524[环境科学与工程—环境工程]