PCDD/PCDF pollution in soils and sediments from the Pearl River Delta of China.
This study reported detection of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) for 62 soil samples and 3 sediment samples collected from the Pearl River Delta, a rapidly industrialized and highly populated area of South China. The results show that the PCDD/F concentrations ranged from 97.6 to 9,600 ng kg(-1) and that the average total concentrations of PCDD/Fs are 1311, 2504, 1320 and 2335 ng kg(-1)(dw), and 1.24, 3.99, 4.80 and 2.63 ng WHO(1998)-TEQ kg(-1) for the samples collected from remote mountains, suburban areas, industrial areas, and residential/commercial areas, respectively. The WHO(1998)-TEQ values calculated for 17 soil samples are higher than 4 ng kg(-1) but lower than 20 ng kg(-1), whereas the WHO(1998)-TEQ values calculated for the remaining 45 samples are lower than 4 ng kg(-1). According to the Canada soil quality guideline, the PCDD/F concentrations in 27.4% of the tested soil samples in this study are greater than the Canadian background concentrations, and the PCDD/F concentrations for the remaining soil samples (73.6%) are lower than the Canadian background concentration.
Zhang
Sukun
S
State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Wushan, Guangzhou 510640, PR China.
Peng
Ping'an
P
Huang
Weilin
W
Li
Xiaoming
X
Zhang
Gan
G
D001572:Benzofurans / Q000032:analysis*; D002681:China; D000072338:Dibenzofurans, Polychlorinated; D019015:Geologic Sediments / Q000032:analysis*; D000072317:Polychlorinated Dibenzodioxins / Q000031:analogs & derivatives* / Q000032:analysis* / Q000633:toxicity; D045483:Rivers; D012989:Soil Pollutants / Q000032:analysis* / Q000633:toxicity
D001572:Benzofurans; D000072338:Dibenzofurans, Polychlorinated; D000072317:Polychlorinated Dibenzodioxins; D012989:Soil Pollutants