1.The Key Laboratory of Coast and Island Development of Ministry of Education, Nanjing University; 2.Water Resources and Environment College, Hohai University
Abstract：In northern Jiangsu coastal zone area, Guanhe River is the biggest river and has the best navigation conditions among rivers which flow into the Yellow Sea. The grain sizes show gradual increase from the high intertidal zone to lower intertidal zone. The heavy metal values have slight changes along both sides of the river mouth, but show an evident change perpendicular to the tidal flat. In the latter case, they show a good correlation with grain size fluctuation, that is, the heavy metal values gradually decline when the grain size increases from the high intertidal zone to the lower intra-tidal zone. Analyses of the heavy metal elements show that on the Guanhe estuary surface sediment, the content of the elements Hg, As and Cu is above background values; Pb and Zn contents are rather close to the background values; and Cd content is less than the background values. The element Hg comes out to be harmful in a medium level to ecological environment, while the elements of Cr, As, Cu, Pb, Zn and Cd fall in a safe range of MPL. On the whole, Guanhe estuary tidal flat is not very harmful to the ecology in terms of the heavy metals.
出版日期: 2008-06-05
引用本文:
. Spatial distribution features and environment
effect of heavy metal in intertidal surface sediments of Guanhe estuary,
Northern Jiangsu Province[J]. Frontiers of Earth Science in China - Selected Publications from Chinese Universities, 0, (): 147-156.
HUANG Jiaxiang, YIN Yong, ZHU Xiaobing, XU Jun. Spatial distribution features and environment
effect of heavy metal in intertidal surface sediments of Guanhe estuary,
Northern Jiangsu Province. Front. Earth Sci., 0, (): 147-156.
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