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Lead Contamination and Source Characterization in Soils Around a Lead–Zinc Smelting Plant in a Near-Urban Environment in Baoji, China

  • Wenbo Deng
  • Xuxiang LiEmail author
  • Zhisheng An
  • Liu Yang
Article

Abstract

Economic reforms in China since 1978 have promoted nationwide socioeconomic advancement but led to a considerable amount of environmental pollution. The distribution and sources of Pb in a typical peri-urban industrial part of Baoji, China, were assessed by determining the Pb contents and isotopic compositions in 52 topsoil samples from the study area. The topsoil samples were polluted averagely with 40.88 mg Pb kg−1, was 1.86 times higher than the Pb content of local background soil (22.04 mg kg−1). Pb isotopic compositions were determined by analyzing samples prepared using total digestion and acid extraction methods. Radiogenic isotopes contributed more to the Pb concentrations in the acid extracts than in the total digests. This was shown by the 207/206Pb and 208/206Pb ratios, which were 0.845–0.88 and 2.088–2.128, respectively, in the acid extracts and 0.841–0.875 and 2.086–2.125, respectively, in the total digests. This indicates that anthropogenic sources of Pb could be identified more sensitively in acid extracts than in total digests. The Pb isotope ratios showed that burning coal and smelting ore are the predominant anthropogenic sources of Pb in the study area, i.e., a lead–zinc smelter and a coking plant are major sources of Pb in the study area.

Keywords

Background Soil Topsoil Sample Total Digest Leaded Gasoline Dilute Acid Extract 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgments

The research was supported by the Shaanxi Provincial Academy of Environmental Science, Institute of Earth Environment, Chinese Academy of Sciences, and The Research Special Fund for Public Welfare Projects of Ministry of Environmental Protection of China (MEPC) (Grant No. 201109053). The authors thank the editors and anonymous reviewers for their careful work and constructive comments.

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Copyright information

© Springer Science+Business Media New York 2016

Authors and Affiliations

  1. 1.School of Human Settlements and Civil EngineeringXi’an Jiaotong UniversityXi’anChina
  2. 2.Institute of Earth EnvironmentChinese Academy of SciencesXi’anChina

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