College of Life and Environmetal Sciences, Minzu University of China, Beijing 100081, China.
College of Life and Environmetal Sciences, Minzu University of China, Beijing 100081, China; Engineering Research Center of Food Environment and Public Health, Beijing 100081, China.
Chemosphere. 2018 May;199:382-389. doi: 10.1016/j.chemosphere.2018.02.039. Epub 2018 Feb 9.
Polychlorinated naphthalenes (PCNs), polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs), and polychlorinated biphenyls (PCBs) are of public concern worldwide because of their persistence and toxicity. To address the human health risks of these pollutants and identify possible sources, soil samples were collected from an industrial area and surrounding residential area in Shandong Province, China. The PCN, PCDD/F, and PCB levels in these samples were determined. Extremely high concentrations of PCNs were detected in two soil samples, and their congener distributions were similar to those of a PCN industrial technical product. The levels of combustion-related PCNs and PCDD/Fs were high in samples collected near a secondary copper smelter. The distribution of total PCB concentrations was similar to that of PCNs. Both historical residues from industrial technical products and emissions from the secondary copper smelter were likely sources of PCNs and PCBs, whereas emissions from the smelter were the main source of PCDD/Fs. A soil sample from near the smelter had a high ΣTEQ concentration (PCDD/Fs + PCBs + PCNs = 18.33 pg TEQ/g) and carcinogenic risk (0.85 × 10) to workers. For all the other samples, the levels of PCDD/Fs, PCBs and PCNs exhibited low carcinogenic and noncarcinogenic risks to workers and residents.
多氯萘（PCNs）、多氯二苯并对二恶英和呋喃（PCDD/Fs）以及多氯联苯（PCBs）因其持久性和毒性而引起了全球公众的关注。为了评估这些污染物对人类健康的风险并确定可能的污染源，本研究在中国山东省的一个工业区及周边居民区采集了土壤样本。测定了这些样本中的 PCN、PCDD/F 和 PCB 水平。在两个土壤样本中检测到极高浓度的 PCN，其同系物分布与 PCN 工业技术产品相似。在靠近一家二级铜冶炼厂的样本中，燃烧相关的 PCN 和 PCDD/F 水平较高。总 PCB 浓度的分布与 PCN 相似。历史上工业技术产品的残留以及二级铜冶炼厂的排放都可能是 PCN 和 PCB 的来源，而冶炼厂的排放则是 PCDD/F 的主要来源。来自冶炼厂附近的土壤样本具有高的ΣTEQ 浓度（PCDD/Fs+PCBs+PCNs=18.33pg TEQ/g）和对工人的致癌风险（0.85×10）。对于所有其他样本，PCDD/Fs、PCBs 和 PCN 对工人和居民的致癌和非致癌风险均较低。
