Assessment of Heavy Metal Pollution in Estuarine Intertidal Sediments and Soils: a Case Study in Dalian
Heavy metal concentrations in estuarine intertidal sediments and adjacent agricultural soils of Dalian, northeastern China were monitored to indicate the status of heavy metal contamination and assess environmental quality of sediments and agricultural soils, which were analyzed by atomic absorption spectrophotometry for Zn, Cu, Pb and Cr. The sediment and soil environmental quality on the base of the environmental background value criteria were evaluated respectively by singlefactor pollution index and Nemerow multi-factor pollution index method according to the first grade of Standards for Soil Environmental Quality of China (GB15618-1995). The data reveal elevated concentrations of Cu (16.7-25.3 mg kg-1), Pb (24.2-37.9 mg kg-1) and Cr (64.5-117 mg kg-1). Zn concentration is lower than background value. Contamination of Cr was the highest, followed by Pb and Cu. The sequence of pollution degree is upland soil > paddy soil > estuarine intertidal sediment. As for region, contamination degree in order is Biliu estuary region > Yingna estuary region > Fuzhou estuary region. The sediment and soil qualities are unpolluted as a whole and varied from unpolluted to low polluted status in Dalian coastal region.
Heavy metals Single factor indez Nemerow indez Estuarine intertidal sediment Dalian region
Wang Lianfeng Li Xinyi Qiao Yanjiao Ren Qiaoling Xie Hongtu Zhang Xudong
College of Environmental and Chemical Engineering Dalian Jiaotong University Dalian 116028,China Key College of Environmental and Chemical Engineering Dalian Jiaotong University Dalian 116028,China Key Laboratory of Terrestrial Ecological Process Institute of Applied Ecology,Chinese Academy of Sci
国际会议
北京
英文
1-4
2009-06-11（万方平台首次上网日期，不代表论文的发表时间）