Abstract:The concentrations of major and trace elements in surface sediments of Liaodong Bay, were determined by X-ray fluorescence (XRF), inductively coupled plasma mass spectroscopy (ICP-MS) and atomic fluorescence spectrometer (AFS), respectively. The metals display four distribution patters, which controlled by the grain size, total organic carbon contents and the distance between river mouths and sites. Metal concentrations (Cu, Zn, Pb, Cd, Cr, Ni, Ag, Hg and As) were compared with the marine sediment quality standards (SQS) and literature data to assess the pollution status of the sediments. Enrichment factors (EFs) were also calculated to weigh whether the observed concentrations were higher than background levels. Three groups of elements: (1) Fe, Ti, Mn, P, Cu, Zn, Ni, Cr, Co, Sc and V were at background concentrations; (2) As was the slight enriched element; and (3) Pb, Cd, Ag and Hg were moderate enriched elements. Principal component analysis (PCA) and EFs implied that Fe, Ti, Cu, Zn, Cr, Ni, Co, Mn, P, V and Sc mainly originated from terrestrial (rock and soil) weathering, Pb and As partly from some anthropogenic sources, Hg, Cd and Ag mainly from anthropogenic sources, and Ba and Sr from halobios in sediments. Based on the results of factor analysis and cluster analysis, the sediments from 56 stations could be divided into four groups.
胡宁静, 石学法, 黄朋, 刘季花. 渤海辽东湾表层沉积物中金属元素分布特征[J]. 中国环境科学, 2010, 30(3): 380-388.
HU Ning-Jing, SHI Xue-Fa, HUANG Peng, LIU Ji-Hua. Distribution of metals in surface sediments of Liaodong Bay, Bohai Sea. CHINA ENVIRONMENTAL SCIENCECE, 2010, 30(3): 380-388.