Integrated assessment of major and trace elements in surface and core sediments from an urban lagoon, China: Potential ecological risks and influencing factors

Philomina O Peter; Azhar Rashid; François Nkinahamira; Hongjie Wang; Qian Sun; Mahmoud Gad; Chang-Ping Yu; Anyi Hu

doi:10.1016/j.marpolbul.2021.112651

Integrated assessment of major and trace elements in surface and core sediments from an urban lagoon, China: Potential ecological risks and influencing factors

Mar Pollut Bull. 2021 Sep:170:112651. doi: 10.1016/j.marpolbul.2021.112651. Epub 2021 Jun 30.

Authors

Philomina O Peter¹, Azhar Rashid², François Nkinahamira¹, Hongjie Wang¹, Qian Sun³, Mahmoud Gad⁴, Chang-Ping Yu⁵, Anyi Hu⁶

Affiliations

¹ CAS Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; University of Chinese Academy of Sciences, Beijing 100049, China.
² Department of Environmental Sciences, The University of Haripur, Haripur 22620, Pakistan.
³ CAS Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China.
⁴ CAS Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; Water Pollution Research Department, National Research Centre, Giza 12622, Egypt.
⁵ CAS Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; Graduate Institute of Environmental Engineering, National Taiwan University, Taipei 106, Taiwan.
⁶ CAS Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China. Electronic address: ayhu@iue.ac.cn.

PMID: 34217055
DOI: 10.1016/j.marpolbul.2021.112651

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.

Keywords: Major and trace elements; Pollution assessment; Surface and core sediments; Urban lagoon.

MeSH terms

China
Environmental Monitoring
Geologic Sediments
Metals, Heavy* / analysis
Risk Assessment
Trace Elements*
Water Pollutants, Chemical* / analysis

Substances

Metals, Heavy
Trace Elements
Water Pollutants, Chemical