Distribution, source and risk assessment of heavy metals in the seawater, sediments, and organisms of the Daya Bay, China

Yang Liu; Weiming Kuang; Jing Xu; Jinmin Chen; Xiuwu Sun; Cai Lin; Hui Lin

doi:10.1016/j.marpolbul.2021.113297

Distribution, source and risk assessment of heavy metals in the seawater, sediments, and organisms of the Daya Bay, China

Mar Pollut Bull. 2022 Jan:174:113297. doi: 10.1016/j.marpolbul.2021.113297. Epub 2022 Jan 19.

Authors

Yang Liu¹, Weiming Kuang², Jing Xu³, Jinmin Chen⁴, Xiuwu Sun⁵, Cai Lin⁶, Hui Lin⁷

Affiliations

¹ Laboratory of Marine Ecological Environment Monitoring Pre-Warning Technology, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China. Electronic address: jczx_liuyang@tio.org.cn.
² Laboratory of Marine Ecological Environment Monitoring Pre-Warning Technology, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China. Electronic address: kuangweiming@tio.org.cn.
³ College of Ocean and Earth Sciences, Xiamen University, Xiamen 361005, China. Electronic address: xujing@xum.edu.cn.
⁴ Laboratory of Marine Ecological Environment Monitoring Pre-Warning Technology, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China. Electronic address: chenjinmin@tio.org.cn.
⁵ Laboratory of Marine Ecological Environment Monitoring Pre-Warning Technology, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China. Electronic address: sunxiuwu@tio.org.cn.
⁶ Laboratory of Marine Ecological Environment Monitoring Pre-Warning Technology, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China. Electronic address: lincai@tio.org.cn.
⁷ Laboratory of Marine Ecological Environment Monitoring Pre-Warning Technology, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China. Electronic address: linhui@tio.org.cn.

PMID: 35090281
DOI: 10.1016/j.marpolbul.2021.113297

Abstract

Cu, Pb, Zn, Cd, Cr, Hg and As in seawater, sediment and organisms of the Daya Bay, Guangdong province, China were measured to acquire the comprehensive understanding on distribution, sources and risk assessment of heavy metals (HMs) in the marine ecosystem. The concentrations were relatively ideal, and the Pb was the major pollutant in the seawater and sediment. The contents of HMs were highest in spring; the concentrations near the sewage outlet and shore were noticeable. Submarine pipeline sewage, atmospheric deposition and runoff were the main sources of HMs in coastal waters. Studied HMs were preferentially retained by liquid phase; Cd, Cu and Zn were the most accumulated elements in the organisms from the surrounding environment. Cd in shellfish deserved particular attention, but the health risks including non-carcinogenic and carcinogenic risks of all elements were within acceptable limits. The potential health risks of Pb have been confirmed by molecular docking.

Keywords: Daya Bay; Heavy metal; Risk assessment; Source; Spatial and seasonal variations.

MeSH terms

Bays
Ecosystem
Environmental Monitoring
Geologic Sediments
Metals, Heavy* / analysis
Molecular Docking Simulation
Risk Assessment
Seawater
Water Pollutants, Chemical* / analysis

Substances

Metals, Heavy
Water Pollutants, Chemical