上海市危险废物焚烧行业二噁英排放特征研究

通过对上海市危险废物焚烧行业焚烧炉排放烟气数据的分析，结果表明：不管是医疗废物焚烧炉还是一般危险废物焚烧炉，其二蟋英分布规律大致相同；PCDFs对二曝英的贡献率远高于PCDDs；实测检出的二嚼英异构体中，占二嚼英总量比例较大的依次为1，2，3，4，6，7，8-HpCDF、1，2，3，4，6，7，8-HpCDD和OCDD；I—TEQ贡献最高的二嚼英异构体为2，3，4，7，8-PeCDF，贡献率达31．08％～53．56％。17种二喏英异构体与I—TEQ的相关性分析表明，仅2，3，4，7，8-PeCDF在2类焚烧炉中与I—TEQ均存在相关性，其相关系数分别为0．989和0．998，可以作为潜在的测定指示物。

Emission Characteristics of Dioxin from Dangerous Waste Incineration Industry in Shanghai

This paper investigated the emission characterizations of dioxin from dangerous waste incinerators by analyzing the data from the stack gas. The research showed that the characterizations of PCDD/Fs congeners were almost the same, either from medical waste incinerators or from other dangerous waste incinerators. The con- tribution of total PCDFs was higher than total PCDDs. It found that the major contributors to the toxic PCDD/Fs concentrations were 1,2,3,4,6,7,8-HpCDF, 1,2,3,4,6,7,8-HpCDD and OCDD. The 2,3,4,7,8-PeCDF was the dominant contribution congener to the toxic equivalent quantity （I-TEQ） of PCDD/Fs, and the presence of this congener was 31.08% - 53. 560/o. There was a good correlation between 2,3,4,7,8-PeCDF and total I-TEQ of 17 PCDD/Fs congeners in samplers tested from both medical waste incinerator and other dangerous waste in- cinerator, the correlation coefficient R was 0. 989 and 0. 998, and it would be a potential indicator of analyzing total I-TEQ of PCDD/Fs from stack gas.