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Health risks of heavy metals in contaminated soils and food crops irrigated with wastewater in Beijing, China

Khan, S., Cao, Q., Zheng, Y.M., Huang, Y.Z., Zhu, Y.G.·2008·Environmental Pollution
DOI 10.1016/j.envpol.2007.06.056
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Abstract

Consumption of food crops contaminated with heavy metals is a major food chain route for human exposure. We studied the health risks of heavy metals in contaminated food crops irrigated with wastewater. Results indicate that there is a substantial buildup of heavy metals in wastewater-irrigated soils, collected from Beijing, China. Heavy metal concentrations in plants grown in wastewater-irrigated soils were significantly higher (P<or=0.001) than in plants grown in the reference soil, and exceeded the permissible limits set by the State Environmental Protection Administration (SEPA) in China and the World Health Organization (WHO). Furthermore, this study highlights that both adults and children consuming food crops grown in wastewater-irrigated soils ingest significant amount of the metals studied. However, health risk index values of less than 1 indicate a relative absence of health risks associated with the ingestion of contaminated vegetables.

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Research works printed but not linked: 23

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Metadata

Authors
Khan, S., Cao, Q., Zheng, Y. M., Huang, Y. Z., & Zhu, Y. G.
Venue
Environmental Pollution
Publisher
Elsevier BV
Published
2008-04
Volume
152
Issue
3
Pages
686-692
ISSN
0269-7491
DOI
10.1016/j.envpol.2007.06.056
Cited by
1,946
References
0
Language
en
Licence
www.elsevier.com/tdm/userlicense/1.0/ (tdm)

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