Abstract
Based on the Industrial Source Complex Short-Term Version 3 (ISCST3) model, a simplified modeling approach was developed to predict concentrations of congeners of polychlorinated-p-dioxins and dibenzofurans (PCDD/Fs) of agricultural soil, within a radius of 3 km from a municipal solid waste incinerator (MSWI) plant after its 4-year operation in Hangzhou, China. Comparisons were made between the measured and estimated congener-specific concentrations and the international-toxic equivalent (I-TEQ) values of soil samples with respect to distance from the stack. The results indicate that the predictions of soil PCDD/F concentrations and I-TEQ values were generally lower than their observations, and that the higher the degree of under-estimation seems, the greater the further downwind one gets. Nevertheless, most of the predictions were in good agreement with the trend of measured ones and were within a factor of ten for samples located within 1 km of the plant. Besides, analysis of contributions of various deposition pathways confirms that in addition to wet particle deposition, the dry gaseous deposition is essential for realistic prediction of PCDD/F depositions to soil, especially for tetra- and penta-chlorinated dioxins.
Original language | English |
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Pages (from-to) | 373-380 |
Number of pages | 8 |
Journal | Journal of Zhejiang University: Science A |
Volume | 9 |
Issue number | 3 |
DOIs | |
Publication status | Published - Mar 2008 |
Externally published | Yes |
Keywords
- Agricultural soil
- Dispersion model
- ISCST3
- Municipal solid waste incinerator (MSWI)
- Polychlorinated-p-dioxins and dibenzofurans (PCDD/Fs)
ASJC Scopus subject areas
- General Engineering