1.中国人民公安大学 侦查学院,北京 100038
2.公安部鉴定中心,北京 100038
朱军,博士,研究员,研究方向:理化分析,E-mail:zhujun001cn@126.com
梅宏成,博士,研究员,研究方向:理化分析,E-mail:meihongcheng@163.com
收稿:2025-05-17,
修回:2025-06-12,
录用:2025-07-01,
网络出版:2025-07-25,
纸质出版:2026-01-15
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郑翰阳,朱军,蔡卓通,接昭玮,张涵宇,王伟,胡灿,李亚军,郭洪玲,梅宏成.基于氢稳定同位素的汽油来源分析[J].分析测试学报,2026,45(01):113-120.
ZHENG Han-yang,ZHU Jun,CAI Zhuo-tong,JIE Zhao-wei,ZHANG Han-yu,WANG Wei,HU Can,LI Ya-jun,GUO Hong-ling,MEI Hong-cheng.Source Analysis of Gasoline Based on Stable Hydrogen Isotopes[J].Journal of Instrumental Analysis,2026,45(01):113-120.
郑翰阳,朱军,蔡卓通,接昭玮,张涵宇,王伟,胡灿,李亚军,郭洪玲,梅宏成.基于氢稳定同位素的汽油来源分析[J].分析测试学报,2026,45(01):113-120. DOI: 10.12452/j.fxcsxb.250517366.
ZHENG Han-yang,ZHU Jun,CAI Zhuo-tong,JIE Zhao-wei,ZHANG Han-yu,WANG Wei,HU Can,LI Ya-jun,GUO Hong-ling,MEI Hong-cheng.Source Analysis of Gasoline Based on Stable Hydrogen Isotopes[J].Journal of Instrumental Analysis,2026,45(01):113-120. DOI: 10.12452/j.fxcsxb.250517366.
汽油因易获取、低燃点的特性,常被用于纵火犯罪。确定汽油的来源已成为涉火案件调查中的关键研究内容。该研究采用气相色谱-稳定同位素比值质谱(GC-IRMS)技术,对北京市11家石油公司的14个汽油样本中的14种特征组分进行了氢同位素比值测定。结果显示,所有特征组分的氢同位素比值分布范围较广(-220.53‰~13.61‰)。通过单因素方差分析(One-way ANOVA)发现,约84%的样本至少存在10种具有显著性差异的特征组分。正交偏最小二乘判别分析(OPLS-DA)表明,依据氢稳定同位素特征,能够有效区分不同来源的汽油。该研究利用GC-IRMS技术,筛选出汽油中的特征组分并构建了来源判别模型,为涉火案件中汽油来源的鉴定提供了科学依据。
Gasoline is often used in arson crimes because of its easy accessibility and low flashpoint. Therefore,determining the source of gasoline has become a key research element in the investigation of fire-related cases. In this study,hydrogen isotope ratios of 14 characteristic components in 14 gasoline samples from 11 oil companies in Beijing were determined by gas chromatography-stable isotope ratio mass spectrometry(GC-IRMS). The results showed that the hydrogen isotope ratios of all the characteristic components were distributed in a wide range(-220.53‰-13.61‰). One-way ANOVA revealed that about 84% of the samples had at least 10 characteristic components with significant differences. Orthogonal partial least squares discriminant analysis(OPLS-DA) showed that the gasoline from different sources could be effectively distinguished based on the hydrogen stable isotope signature. In this study,GC-IRMS was used to screen out the characteristic components of gasoline and construct a source discrimination model,which provides a scientific basis for the identification of the source of gasoline in fire-related cases.
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