Trace metal contamination of sediments in an e-waste processing village in China

Coby S. C. WONG, S. C. WU, Nurdan S. DUZGOREN-AYDIN, Adnan AYDIN, Ming Hung WONG

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Abstract

This study examined trace metal contamination of sediments in Guiyu, China where primitive e-waste processing activities have been carried out. It was found that some river sediments in Guiyu were contaminated with Cd (n.d.-10.3 mg/kg), Cu (17.0-4540 mg/kg), Ni (12.4-543 mg/kg), Pb (28.6-590 mg/kg), and Zn (51.3-324 mg/kg). The 206Pb/207Pb and 208Pb/207Pb ratios of the Pb-contaminated sediments of Lianjiang (1.1787 ± 0.0057 and 2.4531 ± 0.0095, respectively) were lower than those of Nanyang River (1.1996 ± 0.0059 and 2.4855 ± 0.0082, respectively), indicating a significant input of non-indigenous Pb with low 206Pb/207Pb and 208Pb/207Pb ratios. Copper, Pb and Zn in the non-residual fractions noticeably increased in the contaminated sediments compared to those in the uncontaminated sediments. A genuine concern is associated with potential transport of the contaminated sediments downstream and enhanced solubility and mobility of trace metals in the non-residual fractions. Copyright © 2006 Elsevier Ltd. All rights reserved.

Original languageEnglish
Pages (from-to)434-442
JournalEnvironmental Pollution
Volume145
Issue number2
DOIs
Publication statusPublished - Jan 2007

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Rivers
China
Sediments
Contamination
Metals
Processing
Solubility
Copper
Electronic Waste
Trace metals

Citation

Wong, C. S. C., Wu, S. C., Duzgoren-Aydin, N. S., Aydin, A., & Wong, M. H. (2007). Trace metal contamination of sediments in an e-waste processing village in China. Environmental Pollution, 145(2), 434-442. doi: 10.1016/j.envpol.2006.05.017

Keywords

  • Trace metals
  • Pb isotopes
  • Sequential chemical speciation
  • Sediment
  • E-waste
  • China