On-site determination of gasoline residues in fire site products by portable GC-MS
A convenient and efficient method for the detection of trace gasoline combustion residues in fire site samples was estab-lished.Three kinds of common combustion residues in fire sites were obtained through simulated combustion experiments:gaso-line and combustible wood combustion residues,gasoline and non-combustible concrete combustion residues,and gasoline and soil unburned residues,which were heated and desorbed in the empty pipe of portable thermal desorption system,and the deat-tached substances were analyzed by portable GC-MS.The re-sults showed that gasoline residues were detected in the three groups of simulated combustion samples.Therefore,the estab-lished method has the characteristics of direct field analysis,no sample pretreatment,low interference from impurities,etc.,and can be used for the field detection of trace gasoline combustion residues in actual fire site samples.
NETL
NSTL
万方数据
维普
