期刊
ENVIRONMENTAL POLLUTION
卷 157, 期 5, 页码 1533-1543出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2009.01.007
关键词
Yangtze River estuary; Intertidal zone sediments; Heavy metals; Contamination; Sediment quality criteria
资金
- Shanghai Scientific and Technological Committee Key Project [036505004]
- SSTC Young Scientist Project [04QMH1411]
- National Natural Science Foundation of China [40771201]
- Key Project of Chinese Ministry of Education [107048]
- Montclair State University Global Initiative Award
- Sokol Faculty Fellowship
Surface sediments (0-5 cm) from 59 stations within the Yangtze River intertidal zone (YRIZ) were sampled for metal contamination analysis in April and August 2005. The concentrations ranged (in mg kg(-1) dry weight): Al, 40,803-97,213; Fe, 20,538-49,627; Cd, 0.12-0.75; Cr, 36.9-173: Cu, 6.87-49.7; Mn, 413-1,112; Ni, 17.6-48.0; Pb, 18.3-44.1: and Zn, 47.6-154; respectively. Among the 139 sampling stations, enrichment factors (EF) indicate enrichment of Cd (52 stations), Cr (54 stations), Cu (5 stations), Ni (26 stations), Pb (5 stations) and Zn (5 stations). Geoaccumulation indexes (I-geo) also suggest individual metal contamination in localized areas. This study indicates that Cd, Cr and Ni enrichment in the YRIZ sediment is widespread whereas Cu, Mn, Pb and Zn enrichment is localized or nonexistent. Factor and cluster analyses indicate that Cd is associated with total organic carbon whereas Cu, Cr, Ni, Pb and Zn have a close association with Mn. (C) 2009 Elsevier Ltd. All rights reserved.
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