一种改进的SPME方法提取火场残留物中的促燃剂  

Extraction of accelerants in fire debris by an improved SPME method

作　　者：何洪源[1] 朱丹[2] 张淑芳[3] 陈占合[3] 

机构地区：[1]中国人民公安大学刑科技系,北京100038 [2]天津市公安局,天津300040 [3]北京市公安局刑科所,北京100054

出　　处：《分析试验室》2008年第7期119-122,共4页Chinese Journal of Analysis Laboratory

基　　金：2006年公安大学院士基金(LG027-5);北京市教育委员会共建项目建设计划(JD100410669)项目资助

摘　　要：对当前国内外用于火场残留物中促燃剂的提取方法进行研究,包括采用活性炭片法(ACS)、固相微萃取(SPME)以及对固相微萃取技术从传统的热解吸模式到溶剂脱附模式的扩展性思考。通过提取3种促燃剂(汽油,煤油和柴油)检材的效能比较与分析,优化了实验条件,确定了SPME的提取和溶剂脱附的方法,实验研究表明,SPME-溶剂脱附法是火场促燃剂残留物分析的有效方法之一。Based on the research at home and abroad, an expansion of SPME sampling from thermal desorption mode to solvent-based desorption for the analysis of ignitable debris were described. Relied on the comparison of results between the two modes for testing three ignitable liquids （gasoline, kerosene, and diesel fuel）, the experiment conditions were optimized and the detailed method of SPME extraction and solvent-based desorption in this paper were established. The results showed solvent-based desorption SPME was one of the effective methods to analyze the accelerants in fire debris.

关 键 词：火场残留物 促燃剂 固相微萃取 

分 类 号：O557.63[理学—热学与物质分子运动论]