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Impact of Soil Heavy Metal Pollution on Food Safety in China

Open access
Zhang, Xiuying, Zhong, Taiyang, Liu, Lei, Ouyang, Xiaoying·2015·PLOS ONE

Abstract

Food safety is a major concern for the Chinese public. This study collected 465 published papers on heavy metal pollution rates (the ratio of the samples exceeding the Grade II limits for Chinese soils, the Soil Environmental Quality Standard-1995) in farmland soil throughout China. The results showed that Cd had the highest pollution rate of 7.75%, followed by Hg, Cu, Ni and Zn, Pb and Cr had the lowest pollution rates at lower than 1%. The total pollution rate in Chinese farmland soil was 10.18%, mainly from Cd, Hg, Cu, and Ni. The human activities of mining and smelting, industry, irrigation by sewage, urban development, and fertilizer application released certain amounts of heavy metals into soil, which resulted in the farmland soil being polluted. Considering the spatial variations of grain production, about 13.86% of grain production was affected due to the heavy metal pollution in farmland soil. These results many provide valuable information for agricultural soil management and protection in China.

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Metadata

Authors
Zhang, X., Zhong, T., Liu, L., & Ouyang, X.
Venue
PLOS ONE
Published
2015-08-07
Volume
10
Issue
8
Pages
e0135182
ISSN
1932-6203 (ISSN-L)
OpenAlex
W1878575932
Cited by
366
References
0
FWCI
9.93
Type
journal article
Language
en
Open access
gold

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CoChat. (2026). Citation check: Impact of Soil Heavy Metal Pollution on Food Safety in China. https://app.cochat.ai/papers/10.1371/journal.pone.0135182
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Zhang, X., Zhong, T., Liu, L., & Ouyang, X. (2015). Impact of Soil Heavy Metal Pollution on Food Safety in China. PLOS ONE. https://doi.org/10.1371/journal.pone.0135182

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.