Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou, 310051, China.
School of Chemistry & Chemical Engineering, Jiangsu University of Technology, NO. 1801 Zhongwu Avenue, Changzhou City, China.
Environ Sci Pollut Res Int. 2017 Oct;24(30):23966-23976. doi: 10.1007/s11356-017-0050-y. Epub 2017 Sep 6.
The potential source categories and source contributions of polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans (PCDD/Fs) in ambient air from Suzhou City, China, were performed by principal component analysis-multiple linear regression (PCA-MLR) and positive matrix factorization (PMF). The carcinogenic potencies of PCDD/Fs were quantitatively apportioned based on the positive matrix factorization-toxic equivalent concentration (PMF-TEQ) method. The results of the present study were summarized as follows. (1) The total concentrations and toxic equivalent concentrations of PCDD/Fs (∑PCDD/Fs and TEQ) in ambient air from Suzhou City were 1.34-42.80 pg N m and 0.081-1.22 pg I-TEQ N m, respectively. (2) PCA-MLR suggested that industrial combustion (IC), electric arc furnaces (EAFs) and secondary aluminum smelters (ALSs), unleaded gas-fueled vehicle sources (UGFVs), ALSs, and hazardous solid waste incinerators (HSWIs) could be the primary PCDD/F contributors, accounting for 13.2, 16.7, 35.5, 19.4, and 15.2% of ∑PCDD/Fs, respectively. (3) PMF and PMF-TEQ indicated that EAFs (carbon steel), UGFVs, IC, ALSs, municipal solid waste incinerators (MSWIs) and hospital waste incinerators (HWIs), and HSWIs contributed 10.9, 10.9, 42.8, 11.3, 10.7, and 13.4% to ∑PCDD/Fs, but contributed 8.3, 12.3, 50.3, 12.7, 6.0, and 10.4% to carcinogenic potencies of PCDD/Fs. This study was the first attempt to quantitatively apportion the source-specific carcinogenic potencies of PCDD/Fs in ambient air.
采用主成分分析-多元线性回归（PCA-MLR）和正定矩阵因子分析（PMF）对中国苏州市大气中多氯二苯并对二恶英和多氯二苯并呋喃（PCDD/Fs）的潜在源类别和源贡献进行了研究。基于正定矩阵因子毒性等效浓度（PMF-TEQ）方法，定量分配了 PCDD/Fs 的致癌潜力。本研究的结果总结如下。(1) 苏州市大气中 PCDD/Fs 的总浓度和毒性等效浓度（∑PCDD/Fs 和 TEQ）分别为 1.34-42.80 pg N m 和 0.081-1.22 pg I-TEQ N m。(2) PCA-MLR 表明，工业燃烧（IC）、电弧炉（EAFs）和二次铝冶炼厂（ALSs）、无铅汽油燃料车源（UGFV）、ALSs 和危险固体废物焚烧炉（HSWI）可能是 PCDD/F 的主要贡献源，分别占∑PCDD/Fs 的 13.2%、16.7%、35.5%、19.4%和 15.2%。(3) PMF 和 PMF-TEQ 表明，EAFs（碳钢）、UGFV、IC、ALSs、城市固体废物焚烧炉（MSWI）和医院废物焚烧炉（HWI）和 HSWI 分别对∑PCDD/Fs 贡献了 10.9%、10.9%、42.8%、11.3%、10.7%和 13.4%，但对 PCDD/Fs 的致癌潜力贡献了 8.3%、12.3%、50.3%、12.7%、6.0%和 10.4%。本研究首次尝试定量分配大气中 PCDD/Fs 的特定源致癌潜力。
