Atmospheric occurrence and health risks of PCDD/Fs, polychlorinated biphenyls, and polychlorinated naphthalenes by air inhalation in metallurgical plants
Atmospheric occurrence and health risks of PCDD/Fs, polychlorinated biphenyls, and polychlorinated naphthalenes by air inhalation in metallurgical plants
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冶金厂空气吸入PCDD/Fs、多氯联苯和多氯萘的大气存在及健康风险
DOI：
10.1016/j.scitotenv.2016.12.071
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发表时间：
2017
影响因子：
9.8
通讯作者：
Xu Yang
中科院分区：
文献类型：
--
作者：
Yang Lili;Liu Guorui;Zheng Minghui;Jin Rong;Zhu Qingqing;Zhao Yuyang;Zhang Xian;Xu Yang
冶金厂是多氯二苯并对二恶英和二苯并呋喃（PCDD/Fs）、多氯联苯（PCBs）和多氯萘（PCNs）的重要来源。考虑到多氯二苯并对二恶英/呋喃、多氯联苯和多氯化萘对人体健康的危害，以及我国数千家冶金企业的实际运行情况，评价冶金企业空气中多氯二苯并对二恶英/呋喃、多氯联苯和多氯化萘的浓度水平及其对人体健康的风险具有重要意义。八家铁矿烧结厂、三家再生铜厂、四家再生铝厂和一家再生铅厂的多氯二苯并对二恶英/呋喃、多氯联苯和多氯化萘吸入量估计值分别为4.9-213.4、21.4-4026.4、28.7-630和11.7 fg TEQ kg− 1 day − 1。相应的患癌风险分别为8.7 × 10− 7 ~ 3.8 × 10− 5、5.1 × 10− 6 ~ 1.1 × 10− 4、3.8 × 10− 6 ~ 7.1 × 10− 4和2.1 × 10− 6。在16个冶炼厂中，有3个再生铝和铜冶炼厂的癌症风险估计值高于100/百万人，表明癌症风险较高。还收集并分析了冶金厂的烟道气样品，将其排放概况与空气样品进行了比较。通过相似度计算和主成分分析，比较了大气和烟道气中PCDD/F、PCB和PCN的浓度分布，揭示了冶金厂烟道气排放对周围大气的影响。这些结果有助于了解我国众多冶金企业中PCDD/Fs、PCBs和PCNs的暴露风险。
Metallurgical plants are important sources of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs), polychlorinated biphenyls (PCBs) and polychlorinated naphthalenes (PCNs). It is significant to evaluate the air levels and human risks of PCDD/Fs, PCBs and PCNs in metallurgical plants considering their adverse effects on human health and thousands of metallurgical plants being in operation in China. The estimated inhalation intakes of PCDD/Fs, PCBs, and PCNs together in eight iron ore sintering plants, three secondary copper plants, four secondary aluminum plants, and one secondary lead plant were 4.9–213.4, 21.4–4026.4, 28.7–630, and 11.7 fg TEQ kg− 1day− 1, respectively, and the corresponding cancer risks were estimated to be 8.7 × 10− 7to 3.8 × 10− 5, 5.1 × 10− 6to 1.1 × 10− 4, 3.8 × 10− 6to 7.1 × 10− 4, and 2.1 × 10− 6, respectively. The estimated cancer risk were higher than 100 per million people for three secondary aluminum and copper smelters among the sixteen metallurgical plants, indicating high cancer risks. Stack gas samples from metallurgical plants were also collected and analyzed for comparing their emission profiles with that of air samples. The comparison of PCDD/F, PCB and PCN profiles between air samples and stack gas samples by similarity calculation and principal component analysis suggested the influence of stack gas emissions from metallurgical plants on surrounding air. These results are helpful for understanding the exposure risk to PCDD/Fs, PCBs and PCNs in numerous metallurgical plants being operation in China.