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Baseline soil levels of PCDD/Fs established prior to the construction of municipal solid waste incinerators in China
- Source :
-
Chemosphere . Jan2012, Vol. 86 Issue 3, p300-307. 8p. - Publication Year :
- 2012
-
Abstract
- Abstract: In order to determine the baseline contamination by polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) in different areas in China, prior to the construction of municipal solid waste incinerators (MSWIs), a total of 32 representative soil samples was collected near 16 incinerators and analyzed for their PCDD/F concentrations. The PCDD/F baseline concentrations in the soil samples ranged from 0.32 to 11.4ng I-TEQ kg−1 (dry matter), with average and median value of 2.73 and 2.24ng I-TEQ kg−1 (dry matter), respectively, and a span between maximum and minimum recorded value of 36. The PCDD homologues predominated in 26 out of 32 soil samples, with the ratio (PCDDs)/(PCDFs) ranging from 1.1 to 164; however in the other 6 samples, PCDF homologues were larger, with the same ratio varying from 0.04 to 0.8. Principal component analysis (PCA) and hierarchical cluster analysis (HCA) were used to examine PCDD/F amount and profile in these soil samples, and their possible associations with known emission sources: in this process 6 really distinct isomer fingerprints were identified. Background PCDD/F levels and profiles were comparable to those found in soils from China and other countries and indicate a rather low baseline PCDD/F contamination of soils. The present data provide the tools for future assessment of a possible impact of these MSWIs. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 00456535
- Volume :
- 86
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- Chemosphere
- Publication Type :
- Academic Journal
- Accession number :
- 70214077
- Full Text :
- https://doi.org/10.1016/j.chemosphere.2011.10.033