Concentrations, diffusive fluxes and toxicity of heavy metals in pore water of the Fuyang River, Haihe Basin

Ecotoxicology and Environmental Safety
Wenzhong TangChao Zhang

Abstract

While the concentrations of heavy metals in pore water provide important information about their bioavailability, to date few studies have focused on this topic. In this study, pore water in river sediments collected from nine sampling sites (S1-S9) was examined to determine the concentrations, fluxes, and toxicity of heavy metals in the Fuyang River. The results showed that the average concentrations of Cr, Ni, Cu, As, Zn, and Pb in pore water were 17.06, 15.97, 20.93, 19.08, 43.72, and 0.56μgL(-1), respectively; these concentrations varied as the pore water depth increased. The diffusive fluxes of Cr, Ni, Cu, As, Zn, and Pb were in the following range: (-0.37) to 3.17, (-1.37) to 2.63, (-4.61) to 3.44, 0.17-6.02, (-180.26) to 7.51, and (-0.92) to (-0.29)μg(m(2)day)(-1), respectively. There was a potential risk of toxicity from Cu to aquatic organisms, as indicated by a value of the Interstitial Water Criteria Toxic Units that exceeded 1.0. Values of the Nemeraw Index were 2.06, 0.48, 0.11, 0.20, 1.11, 1.03, 0.99, 0.88, and 0.89 from S1 to S9, respectively. Only S1 was moderately polluted by heavy metals in pore water.

References

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Citations

Jul 28, 2016·International Journal of Environmental Research and Public Health·Li WanYongsheng Fu
Sep 8, 2017·International Journal of Environmental Research and Public Health·Qi LiuAidi Huo
Nov 18, 2017·Archives of Environmental Contamination and Toxicology·Lucilene Finoto VianaSidnei Eduardo Lima-Junior
Oct 21, 2017·Archives of Environmental Contamination and Toxicology·Yueqiu ZhangLei Chen
Aug 12, 2018·Archives of Environmental Contamination and Toxicology·Lucilene Finoto VianaSidnei Eduardo Lima-Junior
Aug 28, 2021·Environmental Pollution·Ming KongYuexiang Gao

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