Accelerant soot extraction analysis in fire investigation

作者：Zhi You-Ran; Zong Ruo-Wen^*; Zeng Wen-Ru; Li Fei; Zhao Wei-Feng; Tan Jia-Lei

来源：Journal of Combustion Science and Technology, 2011, 17(5): 461-468.

• Accelerant soot
• Comparative analysis
• Equilibrium temperatures
• Extraction equilibrium temperature
• Fire investigation
• GC-MS analysis
• High temperature
• Low temperatures
• Retention time
• Solid phase micro extraction
• SPME-GC-MS
• Storing time
• Target compound

The SPME extraction of the gasoline soot generated under full open combustion is conducted at different temperature. It is found that the effectiveness of SPME extraction at high temperature is better than that at low temperature and the equilibrium temperature for SPME extraction is 70°C. The GC-MS analysis indicates that the gasoline soot generated under semi-closed combustion contains more diversified target compounds, i.e. the polycyclic aromatic hydrocarbons than that generated under full open combustion. Furthermore, a comparative analysis is made on a series of gasoline soot with different storing time. It is found that the target compounds of the soot with longer storing time remain almost unchanged, while the maximum abundance is significantly reduced. Finally, the impact of different accelerants on the target compounds of soot including types of PAHs and retention time, is elucidated through the SPME-GC-MS analysis of the soot generated by two different accelerants namely gasoline and diesel.

• 出版日期2011
• 单位中国科学技术大学