Spatial Distribution and Contamination Assessment of Heavy Metals in Coastal Wetland Sediments

Xinyi Lu; Tianlong Deng; Lixiao Wu; Runzhi Cui; Bao Xiang; Hongliang Wang; Gaohui Liu

doi:10.1051/e3sconf/202670701008

Open Access

Issue		E3S Web Conf. Volume 707, 2026 2026 2^nd International Conference on Energy Engineering and Pollution Control (EEPC 2026)


Article Number		01008
Number of page(s)		4
Section		Energy Engineering and Environmental Pollution Control
DOI		https://doi.org/10.1051/e3sconf/202670701008
Published online		27 April 2026

E3S Web of Conferences 707, 01008 (2026)

Spatial Distribution and Contamination Assessment of Heavy Metals in Coastal Wetland Sediments

Xinyi Lu^a^,b, Tianlong Deng^a, Lixiao Wu^a^,b, Runzhi Cui^a^,b, Bao Xiang^b^,c, Hongliang Wang^c^,d^* and Gaohui Liu^b^,c

^a Tianjin University of Science and Technology, Tianjin, 300457, P.R. China.
^b Research Institute for Environmental Innovation (Binhai, Tianjin), Tianjin, 300450, P.R. China.
^c Chinese Research Academy of Environmental Sciences, Beijing, 100012, P.R. China.
^d Guangdong-Hong Kong-Macao Center for Eco-environmental Sciences, Guangzhou 510555, P.R. China

^* Correspondence: This email address is being protected from spambots. You need JavaScript enabled to view it.

Abstract

This study assessed heavy metal distribution and ecological risks across 28 surface sediment sites (0–20 cm) in the Tianjin Binhai New Area. Average concentrations met Class I marine standards. Independent t-tests showed no significant differences (p > 0.05) between riverine and coastal wetlands . However, Cd, Hg, and Pb exhibited high variability, linked to intensive shipping and industrial runoff from the Port of Tianjin, Lingang, and Dagang zones . While integrated risk was low, Hg posed localized moderate risk. Seasonal discharge and redox variations may further influence metal dynamics . These findings provide a refined baseline for port-industrial bays.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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