4.8 Article

Assessment of heavy metal cations in sediments of Shing Mun River, Hong Kong

Journal

ENVIRONMENT INTERNATIONAL
Volume 26, Issue 5-6, Pages 297-301

Publisher

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0160-4120(01)00003-4

Keywords

aluminum; copper; heavy metals; Hong Kong; lead; metal pollution; river pollution; sediments; water pollution; zinc

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The extent of heavy metal cation contamination in the Shing Mun River has been assessed. Sediment samples were taken at eight strategic locations along the river system. The highest concentrations of copper (Cu, 1.66 mg/g), lead (Pb, 0.354 mg/g), zinc (Zn, 2.2 mg/g) and chromium (Cr, 0.047 mg/g) were found in the Fo Tan Nullah, a major tributary of the Shing Mun River. The highest concentrations of aluminum (114 mg/g) and cadmium (Cd, 0.047 mg/g) were found in the Shing Mun Main River Channel. These contaminated sediments, accumulated over the years on the river bed, could act as secondary sources of pollution to the overlying water column in the river. (C) 2001 Elsevier Science Ltd. All rights reserved.

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