| 生活垃圾焚烧飞灰中的二英分布及指示异构体的识别 |
| 摘要点击 3604 全文点击 1595 投稿时间：2006-03-06 修订日期：2006-04-04 |
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| 中文关键词 生活垃圾 焚烧 飞灰 二英 指示异构体 |
| 英文关键词 municipal solid waste incineration fly ash PCDD/Fs indicated isomer |
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| 中文摘要 |
| 对我国4座生活垃圾焚烧炉飞灰样品中的二英分析结果表明，二英的毒性当量范围为0.34～3.80 ng/g.二英异构体的分布具有相似性，其中1,2,3,7,8-PeCDD和2,3,4,7,8-PeCDF共占毒性当量的33.6%～40.5%.结合对某生活垃圾焚烧炉长期监测结果，同一焚烧炉不同时期飞灰样品的二英毒性当量与1,2,3,7,8-PeCDD和2,3,4,7,8-PeCDF贡献值具有很好的线性相关性（r分别为0.996 3和0.997 4），1,2,3,7,8-PeCDD和2,3,4,7,8-PeCDF可作为指示异构体用于焚烧飞灰中二英毒性的快速测定，尤其适用于同一焚烧炉的长期监测，指示因子分别为4.466?4和3.164?6；不同焚烧炉飞灰的二英毒性当量与2,3,4,7,8-PeCDF有很好的线性相关性（r=0.984?9），2,3,4,7,8-PeCDF可作为不同焚烧炉飞灰中二英检测的指示异构体，指示因子为3.419 4. |
| 英文摘要 |
| Four municipal solid waste incinerator (MSWI) fly ash samples were analyzed for PCDD/Fs. The toxicity equivalent quotient (TEQ) was 0.34～3.80 ng/g. The congeners distribution presented great comparability to each other as 1,2,3,7,8-PeCDD and 2,3,4,7,8-PeCDF contributed about 33.6%～40.5% of total TEQ. Combination with the published PCDD/Fs results of the long-term monitoring in MSWI fly ash in Shanghai, it was found that total TEQ had good correlation with 1,2,3,7,8-PeCDD and 2,3,4,7,8-PeCDF contribution (r=0.996 3 and 0.997?4 respectively), so they could be considered as indicator isomers for the rapid determination of TEQ evaluation, especially in long-term monitoring of one incinerator. The indicator factors were 4.466?4 and 3.164?6 respectively. The analysis of the PCDD/Fs results from different incinerators also showed good correlation with 2,3,4,7,8-PeCDF contribution (r=0.984 9) and it could be considered as indicator isomer for TEQ evaluation of MSWI fly ash samples. The indicator factor was 3.419 4. |
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