Agricultural soil monitoring of PCDD/Fs in the vicinity of a municipal solid waste incinerator in Eastern China: Temporal variations and possible sources

Meng xia Xu, Jian hua Yan, Sheng yong Lu, Xiao dong Li, Tong Chen, Ming jiang Ni, Hui fen Dai, Fei Wang, Ke fa Cen

Research output: Journal PublicationArticlepeer-review

26 Citations (Scopus)

Abstract

The temporal variations of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) in 33 agricultural soil samples in the vicinity of a municipal solid waste incinerator (MSWI) in Eastern China were determined one year after the initial investigation in 2006. The soil PCDD/F concentrations in 2007 ranged from 73.6 to 377 ng kg-1 (0.60-6.38 ng I-TEQ kg-1). During 2006-2007, the overall soil PCDD/F levels increased significantly, i.e., 33% and 39% for total concentration and I-TEQ (median value), respectively. Moreover, soils in the study area are proved to be almost free from previously suspected PCDD/F sources, i.e., pentachlorophenol/sodium penta-chlorophenate (PCP/PCP-Na) and 1,3,5-trichloro-2-(4-nitrophenoxy) benzene (CNP) contaminations. Furthermore, the results from a congener-specific factor analysis between soils (collected in two investigations) and dioxin emission sources suggest that diffuse sources including open burning of wastes, traffic and hot water boilers are major contributors that are responsible for the accumulation of PCDD/Fs in soils. By contrast, the impact of the presumably major PCDD/F source identified in our previous study, i.e., the MSWI, seems to be limited.

Original languageEnglish
Pages (from-to)628-634
Number of pages7
JournalJournal of Hazardous Materials
Volume166
Issue number2-3
DOIs
Publication statusPublished - 30 Jul 2009
Externally publishedYes

Keywords

  • Agricultural soil
  • Hot water boiler
  • MSWI
  • Open burning
  • Polychlorinated-p-dioxins and dibenzofurans

ASJC Scopus subject areas

  • Environmental Engineering
  • Environmental Chemistry
  • Waste Management and Disposal
  • Pollution
  • Health, Toxicology and Mutagenesis

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