Zhang Sukun, Peng Ping'an, Huang Weilin, Li Xiaoming, Zhang Gan
State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Wushan, Guangzhou 510640, PR China.
Chemosphere. 2009 May;75(9):1186-95. doi: 10.1016/j.chemosphere.2009.02.032.
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.
本研究报告了对从珠江三角洲采集的62份土壤样品和3份沉积物样品中多氯二苯并 - 对二噁英和二苯并呋喃（PCDD/Fs）的检测。珠江三角洲是中国南方一个快速工业化且人口密集的地区。结果表明，PCDD/F浓度范围为97.6至9600 ng kg(-1)，从偏远山区、郊区、工业区以及住宅/商业区采集的样品中，PCDD/Fs的平均总浓度分别为1311、2504、1320和2335 ng kg(-1)(干重)，以及1.24、3.99、4.80和2.63 ng WHO(1998) - TEQ kg(-1)。为17份土壤样品计算的WHO(1998) - TEQ值高于4 ng kg(-1)但低于20 ng kg(-1)，而其余45份样品计算的WHO(1998) - TEQ值低于4 ng kg(-1)。根据加拿大土壤质量指南，本研究中27.4%的测试土壤样品中的PCDD/F浓度高于加拿大背景浓度，其余土壤样品（73.6%）的PCDD/F浓度低于加拿大背景浓度。
