期刊
ENVIRONMENT INTERNATIONAL
卷 34, 期 2, 页码 202-209出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.envint.2007.08.002
关键词
PCDD/DFs; incinerator; soil; air
To examine the levels of PCDD/DFs pollution in environmental samples in the vicinity of various incinerators, the levels of PCDD/DFs in air and soil samples collected near 17 incinerators and stack emission gases were investigated between 2003 and 2006. A total of 434 soil, 28 stack emission gas, and 3 8 air samples were analyzed for their PCDD/DFs concentrations. The PCDD/DFs concentrations in the flue gas samples ranged from 0.02 to 16.41 ng I-TEQ/Sm-3, with an arithmetical mean value of 3.13 ng I-TEQ/Sm-3. The PCDD/DFs concentrations in the air samples ranged from 0.032 to 0.965 pg I-TEQ/Sm-3. The soil samples contained between N.D. and 153.23 pg I-TEQ/g-dry, with an average of 7.36 pg I-TEQ/g-dry. These levels were generally consistent with or lower than many previous studies. The average PCDD/DFs levels in the soil samples decrease with increasing distance from the incinerator. From the PCDD/DFs level gradient from each plant, a distance of 500 in is suggested as being under the influence of an incinerator. (C) 2007 Elsevier Ltd. All fights reserved.
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