Characteristics of metal pollution and multi-isotopic signatures for C, Cu, Zn, and Pb in coastal sediments from special management areas in Korea

Type Article
Date 2023-03
Language English
Author(s) Jeong Hyeryeong1, 2, Lee Yeonjung3, Moon Hyo-Bang4, Ra Kongtae1, 5
Affiliation(s) 1 : Marine Environmental Research Center, Korea Institute of Ocean Science and Technology (KIOST), Busan 49111, Republic of Korea
2 : Ifremer, RBE/CCEM, F-44000 Nantes, France
3 : Marine Ecosystem Research Center, Korea Institute of Ocean Science and Technology (KIOST), Busan 49111, Republic of Korea
4 : Department of Marine Sciences and Convergent Technology, College of Science and Convergence Technology, Hanyang University, Ansan 15588, Republic of Korea
5 : Department of Ocean Science (Oceanography), KIOST School, University of Science and Technology (UST), Daejeon 34113, Republic of Korea
Source Marine Pollution Bulletin (0025-326X) (Elsevier BV), 2023-03 , Vol. 188 , P. 114642 (12p.)
DOI 10.1016/j.marpolbul.2023.114642
WOS© Times Cited 2
Keyword(s) Metal stable isotopes, Carbon isotope, Source identification, Marine pollution, Heavy metals

The concentrations and isotopic compositions of carbon (C), copper (Cu), zinc (Zn), and lead (Pb) in coastal sediments were analyzed to identify potential pollution sources. High concentrations of total organic carbon (TOC) and metals were found close to cities and industrial areas. The isotopic compositions of C, Cu, Zn, and Pb tended to decrease as their concentrations increased. Bi-plots between δ65Cu and δ66Zn showed that the isotopic compositions in most coastal sediments, except sediments around a smelter, were similar to the isotopic compositions of road dust in urban and industrial areas of Korea. Our results suggest that heavy metal pollution in coastal sediments is greatly influenced by the pollution source, such that most metals originate from traffic and industrial activities in the urban environment. This analysis of multiple isotopes provides insights concerning the transport mechanisms and clarifies potential sources of metal contamination in coastal environments.

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