Journal
BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
Volume 108, Issue 2, Pages 337-343Publisher
SPRINGER
DOI: 10.1007/s00128-021-03413-2
Keywords
Surface sediment; Heavy metal; Contamination assessment; Estuary wetland; Redundancy analysis
Categories
Funding
- Guangdong Provincial Key Laboratory of Fishery Ecology and Environment [FEEL-2017]
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The heavy metal pollution caused by industrial and agricultural activities in estuary wetlands has gained widespread attention. By studying the seasonal variation and contamination risk of heavy metals in sediments, it was found that the heavy metal pollution levels were low and significantly different between summer and winter. These findings provide scientific support for the prevention of heavy metal pollution in estuary wetlands.
The heavy metal pollution of estuary wetlands caused by industrial and agricultural production activities has aroused widespread concern. The Hakanson Pollution index, Geo-accumulation index (I-geo) and Redundancy analysis were used to explore the seasonal variation and contamination risk of heavy metals in surface sediments. Results showed that the heavy metal concentrations were ranked in descending order: Cd > Cu > Zn > Pb > Cr. The analysis result of HPI and I-geo showed that there was a low level of heavy metal contamination both in summer and winter. Redundancy analysis showed that the correlation between heavy metals and physicochemical properties of sediment was significantly different in winter and summer. Our findings provide scientific support for the prevention of heavy metal pollution in estuary wetlands.
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