| 土壤中二噁英/呋喃类物质的ASE高效提取法 |
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| 引用本文： | 李伟,陈左生,李常青,黄萍,刘耕耘,周正,王关玉.土壤中二噁英/呋喃类物质的ASE高效提取法[J].环境科学研究,2004,17(2):61-64. |
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| 作者姓名： | 李伟 陈左生 李常青 黄萍 刘耕耘 周正 王关玉 |
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| 作者单位： | 北京大学,地球与空间科学学院,北京,100871;北京大学,地球与空间科学学院,北京,100871;北京大学,地球与空间科学学院,北京,100871;北京大学,地球与空间科学学院,北京,100871;北京大学,地球与空间科学学院,北京,100871;北京大学,地球与空间科学学院,北京,100871;北京大学,地球与空间科学学院,北京,100871 |
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| 基金项目： | 北京市自然科学基金资助项目(8000001)，国家自然科学基金资助项目(20177001) |
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| 摘 要： | 研究了用高效溶剂提取方法测定土壤中二英类物质,特别对与提取效率相关的条件如提取次数等进行研究。得出土壤中二英类物质各异构体的提取效率与提取次数有关。提取率99%以上(3次提取),仅要1h。与国外同一土壤索氏提取法的提取结果进行了比较,表明ASE有提取溶剂用量少、时间短、效率高、实验步骤简化等优点。
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| 关 键 词： | 高效溶剂提取法 土壤 二噁英/呋喃 提取效率 痕量分析 |
| 文章编号： | 1001-6929(2004)02-0061-04 |
| 收稿时间： | 2003/3/17 0:00:00 |
| 修稿时间： | 2003/7/6 0:00:00 |
High Efficient Extraction Method of Polychlorinated Dibenzo-p-Dioxins and Dibenzofurans from Soils |
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| LI Wei,CHEN Zuo-sheng,LI Chang-qing,HUANG Ping,LIU Geng-yun,ZHOU Zheng and WANG Guan-yu.High Efficient Extraction Method of Polychlorinated Dibenzo-p-Dioxins and Dibenzofurans from Soils[J].Research of Environmental Sciences,2004,17(2):61-64. |
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| Authors: | LI Wei CHEN Zuo-sheng LI Chang-qing HUANG Ping LIU Geng-yun ZHOU Zheng and WANG Guan-yu |
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| Affiliation: | School of Earth and Space Sciences,Peking University,Beijing100871,China |
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| Abstract: | The authors studied the method of accelerated solvent extraction(ASE)for polychlorinated dibenzo-p-dioxins and dibenzofurans((PCDD/Fs))in soils,especially the conditions related to extraction efficiency such as extraction times.The results showed that the extraction efficiency of various isomers of PCDD/Fs in the soils was related to the extraction times.It took only 1 h to reach the extraction rate of over 99%(3 extraction times).The method was compared with classical soxhlet extraction in the cross check among international dioxins laboratories.It was shown that ASE was speedier,more automated and simpler in experimental steps,with less solvent required. |
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| Keywords: | accelerated solvent extraction soil polychlorinated dibenzo-p-dioxins and dibenzofurans extraction efficiency ultra-trace detection |
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