John Wiley & Sons, Ltd.

Characteristic and potential sources of polychlorinated dibenzo‐p‐dioxins and dibenzofurans in agriculture soils in Beijing, China

0
Polychlorinated dibenzo‐p‐dioxins and dibenzofurans (PCDD/Fs) were analyzed in 25 background and 80 agriculture soil samples collected from 21 sites in Beijing, China. The levels of PCDD/Fs in the north agriculture soils were low (0.15–0.58 ng I‐TEQ/kg), which were compatible with those of the background soils (0.091–0.35 ng I‐TEQ/kg). However, in the south agriculture soils, there was an abrupt jump in their concentration (0.27–3.3 ng I‐TEQ/kg), several times higher. Comparison of PCDD/Fs congener compositions between possible sources and samples indicated that agriculture soils in Beijing had not been contaminated by the three main PCDD/Fs contamination sources in China, such as ferrous and non‐ferrous metal, waste incineration and power generation, but had been slightly contaminated by the impurities of some organochlorine pesticides, such as sodium pentachlorophenate, also slightly contaminated by the biomass open burning, vehicle exhaust, atmospheric deposition, sediment and sewage sludge. These results have also been supported by the principal components analysis. Environ Toxicol Chem © 2014 SETAC

Customer comments

No comments were found for Characteristic and potential sources of polychlorinated dibenzo‐p‐dioxins and dibenzofurans in agriculture soils in Beijing, China. Be the first to comment!