摘要
实验探讨气相色谱/质谱联用技术(GC/MS)、气相色谱/选择离子存储技术(GC/μSIS)和气相色谱/质谱/质谱技术(GC/MS/MS)在93#汽油及其烟尘成分分析中的应用。结果显示,GC/MS获得的谱图信息较全,但谱图复杂、干扰较多,对于含量较低的成分信噪比不够好,容易造成误判;GC/μSIS灵敏度较高,适合于鉴定分子量小、分子结构简单的未燃烧汽油成分;GC/MS/MS即使对于复杂样品也可以达到很高的灵敏度,但要求目标成分具有一定的结构稳定性,更适合汽油燃烧后产物的分析。
The compounds in Gasoline 93# and its soot were analyzed by GC/MS,GC/μSIS and GC/MS/MS.Results showed that,spectrum got by GC/MS illustrates more information,but the spectrum is complicate,and with more interference,so for the low-tech components the SNR is not very good,and mistake would happen;GC/μSIS is more sensitive,and can be used for unburned gasoline components whose molecular weight is small,and molecular structure is simple;GC/MS/MS can reach high sensitivity even the sample is complicate,but the target composition should be structurally stable,and the method is suit can be used for combustion products of gasoline.
出处
《消防科学与技术》
CAS
北大核心
2011年第11期1081-1085,共5页
Fire Science and Technology
基金
公安部消防局应用创新项目"多级离子阱质谱扫描技术应用于火灾物证鉴定方法研究及应用"(2009XFCX041)
