Heavy metal contamination and ecological risk of farmland soils adjoining steel plants in Tangshan, Hebei, China

Environmental Science and Pollution Research International
Liyun YangHao Bai

Abstract

The purpose of this study was to determine the heavy metal concentrations and ecological risks to farmland soils caused by atmospheric deposition adjoining five industrial steel districts in Tangshan, Hebei, China. A total of 39 topsoil samples from adjoining these plants were collected and analyzed for Pb, Zn, Cu, Cr, and As. The geo-accumulation index (Igeo) and potential ecological risk index (PERI) were calculated to assess the heavy metal pollution level in soils. The results showed that the levels of Pb and As in farmland soils adjoining all steel plants were more than the background value, with the As content being excessively high. The Cr and Cu contents of some samples were over the background values, but the Zn content was not. In all the research areas, the largest Igeo value of the heavy metals was for As, followed by Pb, and the largest monomial PERI ([Formula: see text]) was As, which showed that the pollution of As in farmland soils was significant and had considerable ecological risk. Additionally, the heavy metal sequential extraction experiments showed that Pb and Cr, which exceeded the background value, were present in about 20% of the exchangeable and carbonate-bound fractions in the soils surrounding some s...Continue Reading

References

Apr 5, 2001·Environmental Technology·C GleyzesM Astruc
Oct 14, 2004·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Visnja OrescaninStipe Lulic
Feb 22, 2012·Journal of Hazardous Materials·Chamteut OhJunboum Park
Jan 24, 2015·The Science of the Total Environment·Saiful IslamShigeki Masunaga
Jan 27, 2015·The Science of the Total Environment·Haiyang ChenJinsheng Wang

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