| 国产多氯联苯及其焚烧烟灰中类二噁瑛多氯联苯测定 |
| 摘要点击 1598 全文点击 1111 投稿时间：1994-12-25 |
| 查看HTML全文
查看全文 查看/发表评论 下载PDF阅读器 |
| 中文关键词 类二多氯联苯 焚烧 GC/MS法 环境毒性评价 |
| 英文关键词 dioxin-like PCB incineration GC/MS |
|
| 中文摘要 |
| 多氯联苯(PCBs)各同族体的毒性与氯原子取代位置有关,PCBs环境毒性的评价主要取决于类二PCBs的分析。本文采用多段硅胶柱与碱性氧化铝柱对样品前处理,GC/MS方法测定了2种国产商品PCBs中的类二PCB成分。并与国外某些PCBs商品进行了比较。PCBs焚烧炉烟灰样品中类二PCB的测定结果表明,焚烧炉排放烟灰中PCBs含量和毒性分别降低了2—5万倍。 |
| 英文摘要 |
| Considering the fact that the toxicity of PCBs congeners is related to the substituted positions of chlorine atoms,the evaluation of PCBs environmental toxicity depends on the analysis of dioxinlike PCBs,Multi-layer silica column and basic alumina column clean-ups were applied to the pretreatment of samples. The composition and content of dioxin-like PCB congeners in two commercially available PCB in China were determined by GC/MS,and were compared with those from other countries. The determination results of dioxin-like PCB in the stack ash sample from PCBs incinerator showed that the content and toxicity of dioxin-like PCB in stack ash were diminish6d by 20000 and 50000 times,respectively. |
