Abstract:
:The concentrations of 7 heavy metals (Cu, Pb, Zn, Cr, Cd, As and Hg) were analysed in 12 sediment cores collected from 6 typical intertidal zones in northern China. The data reveal that the environmental quality of the northern Chinese intertidal environment has gradually improved and that the concentrations of Cu, Pb, Zn, Cr, Cd, As and Hg averaged over all sediments were 29.2, 25.8, 78.5, 72.2, 0.168, 10.7 and 0.044 mg/kg, respectively. The results of the geoaccumulation index and enrichment factor methods demonstrate that most of the sediments in the intertidal zone in northern China have good environmental quality, although some areas are contaminanted, including the Yangtze River Estuary, which is seriously contaminanted. According to sediment quality guidelines, the heavy metal concentrations in the sediments in the 6 typical intertidal zones in this survey are categorized as having moderate impacts with potential adverse biotoxic effects.
journal_name
Mar Pollut Bulljournal_title
Marine pollution bulletinauthors
Zhuang H,Gao M,Yan C,Cao Y,Zhang Jdoi
10.1016/j.marpolbul.2020.111442subject
Has Abstractpub_date
2020-10-01 00:00:00pages
111442eissn
0025-326Xissn
1879-3363pii
S0025-326X(20)30560-9journal_volume
159pub_type
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