Study on identification and traceability of diesel based on chemical fingerprint and stable isotope fingerprint

Fire Science and Technology ›› 2025, Vol. 44 ›› Issue (11): 1708-1713.

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Study on identification and traceability of diesel based on chemical fingerprint and stable isotope fingerprint

Tian Guihua^1,2,3, Fan Zilin^1,2,3, Deng Zhenyu^1,2,3, Wang Mian^1,2,3

(1. Tianjin Fire Science and Technology Research Institute of MEM, Tianjin 300381, China; 2. Key Laboratory of Fire Protection Technology for Industry and Public Building, Ministry of Emergency Management, Tianjin 300381, China; 3. Tianjin Key Laboratory of Fire Safety Technology, Tianjin 300381, China)

Received:2025-04-07 Revised:2025-08-11 Online:2025-11-20 Published:2025-11-15

Abstract

Abstract: Source identification study on diesel fuels with varying degrees of weathering was conducted using gas chromatography-mass spectrometry (GC-MS) and isotope ratio mass spectrometry (IRMS) techniques. By analyzing the GC-MS chemical fingerprint characteristics of n-alkanes in 43 diesel samples across 8 weathering levels, the boundary conditions for diesel source identification based on chemical fingerprints were determined. Analysis of total carbon and monohydrocarbon isotope ratios in the diesel samples yielded isotopic fingerprints. Linking these isotopic fingerprints with the chemical fingerprints enables more effective differentiation between diesel fuel sources, providing support for fire investigation.

Key words: chemical fingerprint, weathering, stable isotope fingerprint, fire investigation, traceability of diesel

Tian Guihua, Fan Zilin, Deng Zhenyu, Wang Mian, . Study on identification and traceability of diesel based on chemical fingerprint and stable isotope fingerprint[J]. Fire Science and Technology, 2025, 44(11): 1708-1713.

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Study on identification and traceability of diesel based on chemical fingerprint and stable isotope fingerprint

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