摘要
对我国4座生活垃圾焚烧炉飞灰样品中的二噁英分析结果表明，二噁英的毒性当量范围为0．34—3．80ng/g．二噁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噁英毒性当量与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0．9963和0．9974），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噁英毒性的快速测定，尤其适用于同一焚烧炉的长期监测，指示因子分别为4．4664和3．1646；不同焚烧炉飞灰的二噁英毒性当量与2，3，4，7，8-PeCDF有很好的线性相关性（r=0．9849），2，3，4，7，8-PeCDF可作为不同焚烧炉飞灰中二噁英检测的指示异构体，指示因子为3．4194．
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 resuhs 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.
出处
《环境科学》
EI
CAS
CSCD
北大核心
2007年第2期445-448,共4页
Environmental Science
基金
国家自然科学基金项目(20277024)
国家高技术研究发展计划(863)项目(2002AA644010)
关键词
生活垃圾
焚烧
飞灰
二噁英
指示异构体
：municipal solid waste
incineration
fly ash
PCDD/Fs
indicated isomer
