کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4424965 | 1619210 | 2012 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Long-term persistence of polychlorinated dibenzo-p-dioxins and dibenzofurans in air, soil and sediment around an abandoned pentachlorophenol factory in China Long-term persistence of polychlorinated dibenzo-p-dioxins and dibenzofurans in air, soil and sediment around an abandoned pentachlorophenol factory in China](/preview/png/4424965.png)
Air, soils and sediments surrounding an abandoned pentachlorophenol (PCP) factory were sampled to determine the levels of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs), unintentionally formed during PCP production. The mean concentration of PCDD/Fs in ambient air was one order of magnitude higher than that of the reference site. A trend of decreasing concentrations with increasing distance from the factory was observed, suggesting this site has a significant influence on the regional ambient air. As for soil samples collected within 3 km from the factory and sediment samples from the adjacent rivers, high levels of contamination were found with WHO-TEQ concentrations of 193 ± 211 pg/g and 667 ± 978 pg/g, respectively. The PCDD/F homologue profiles of all samples were consistent with those found in the technical product of PCP, with OCDD as the dominant congener. These results indicate PCDD/Fs in the historical contaminated site pose a long-term impact on surrounding environment.
► PCDD/Fs were investigated in various environmental compartments surrounding an abandoned pentachlorophenol (PCP) factory.
► High levels of PCDD/F contamination were found in ambient air, soils and the sediments around this factory.
► PCDD/F homologue profiles were consistent with PCDD/Fs in technical product of PCP.
► PCDD/Fs in this historical contaminated site pose a long-term impact on surrounding environment.
Journal: Environmental Pollution - Volume 162, March 2012, Pages 138–143