Abstract:Concentrations and congener profiles of PCDD/Fs in exhaust gases emitted from four typical industries of Pearl River Delta was studied. The results show that the concentrations of PCDD/Fs ranged from 0.00722 to15.0 ng-TEQ/m3. Concentration distributions of PCDD/Fs in exhaust gases emitted from four typical industries were as follows: waste incineration industry > iron and steel foundry industries > non-ferrous metals recycling industry > E-waste disposal, The 17 types of 2,3,7,8-substituted isomers were detected in different degrees, the percentage of 2,3,4,7,8-PeCDF was the highest and the OCDF was the lowest. The percentages of 2,3,7,8-TCDD and 2,3,7,8-TCDF in exhaust gases emitted from four typical industries were given below: E-waste disposal > non-ferrous metals recycling industry > iron and steel foundry industries> waste incineration industry. The percentage of 2,3,4,7,8-PeCDF in the iron and steel foundry industries was the highest in these four typical industries (24.24%); and the levels of PCDFs were higher than PCDDs. On the whole, the levels of lower chlorinated isomers were lower than those of the higher chlorinated isomers in the iron and steel foundry industries.
杨艳艳, 韩静磊, 青宪, 张素坤, 方建德, 冯桂贤, 付建平. 珠江三角洲典型行业排放废气中PCDD/Fs污染水平[J]. 中国环境科学, 2013, 33(增刊): 186-190.
YANG Yan-Yan, HAN Jing-Lei, QING Xian, ZHANG Su-Kun, FANG Jian-De, FENG Gui-Xian, FU Jian-Ping. PCDD/Fs pollutions in exhaust gases from typical industries of the Pearl River Delta. CHINA ENVIRONMENTAL SCIENCECE, 2013, 33(增刊): 186-190.