Integrated assessment of major and trace elements in surface and core sediments from an urban lagoon, China: Potential ecological risks and influencing factors
Journal
Marine Pollution Bulletin
Journal Volume
170
Date Issued
2021
Author(s)
Abstract
Marine sediments serve as a sink for contaminants of anthropogenic origin. Here, 25 major and trace elements were determined in surface and core sediments from an urban lagoon (Yundang Lagoon), China. The median concentrations of Pb, Cd, Cu, and Zn in both surface and core sediments exceeded global and crustal averages. Principal component analysis for the elements and ecological impact of the heavy metals indicated spatial heterogeneity in core sediments from different lagoon areas; however, no such pattern was observed in surface sediments. Geodetector analysis indicated spatial locations of lakes, pH, N%, C%, and S% as the major factors influencing the heterogeneity of potential ecological risk index, a cumulative measure of the ecological impact of heavy metal. The interaction detector indicated nonlinear and bivariate enhancement between different physicochemical parameters. Besides, a depth profile of the elements in different samples was also elucidated. ? 2021 Elsevier Ltd
Subjects
Major and trace elements
Pollution assessment
Surface and core sediments
Urban lagoon
Heavy metals
Principal component analysis
Risk assessment
Submarine geology
Surficial sediments
Trace elements
Anthropogenic origin
Core sediments
Ecological impacts
Integrated assessment
Marine sediments
Potential ecological risk
Surface sediments
Lakes
cadmium
carbon
copper
heavy metal
lead
nitrogen
sulfur
trace element
zinc
concentration (composition)
heterogeneity
lacustrine deposit
physicochemical property
principal component analysis
sediment core
spatial analysis
Article
China
environmental impact
geographic distribution
lagoon
lake
pH
physical chemistry
pollution monitoring
risk factor
sediment
environmental monitoring
risk assessment
water pollutant
Environmental Monitoring
Geologic Sediments
Metals, Heavy
Risk Assessment
Trace Elements
Water Pollutants, Chemical
Type
journal article