Journal of Forensic Medicine ›› 2024, Vol. 40 ›› Issue (6): 542-549.DOI: 10.12116/j.issn.1004-5619.2024.340405

Special Issue: 高分辨质谱技术专题

• Topic on High Resolution Mass Spectrometry Technology • Previous Articles     Next Articles

Research Progress on the Application of MALDI-MSI in Hair Analysis

Jiao-jiao JI1(), Xin WANG2, Jia-man LIN3, Duo-qi XU2, Hui YAN2, Min SHEN2()   

  1. 1.College of Criminal Science and Technology, Criminal Investigation Police University of China, Shenyang 110854, China
    2.Shanghai Key Laboratory of Forensic Medicine, Key Laboratory of Forensic Science, Ministry of Justice, Shanghai Forensic Service Platform, Academy of Forensic Science, Shanghai 200063, China
    3.School of Criminal Investigation, People’s Public Security University of China, Beijing 100038, China
  • Received:2024-04-23 Online:2025-03-10 Published:2024-12-25
  • Contact: Min SHEN

Abstract:

Mass spectrometry imaging (MSI) is an emerging high-tech “photography” method combining mass spectrometry and image visualization technologies, which can simultaneously monitor the spatial distribution of multiple molecules in biological samples. In recent years, the characteristics of this technology have been used to visually study the distribution of drugs in hair, among which matrix-assisted laser desorption ionization-mass spectrometry imaging(MALDI-MSI) technology has been most widely applied in hair analysis. Based on the principle of MALDI-MSI technology, this paper discusses the key technical elements of MALDI-MSI technology applied to hair analysis and reviews the research achievements of MSI in hair analysis. It concludes that improving the ionization efficiency, resolution, sensitivity and stability of MALDI-MSI technology remains the future exploration direction, and simplifying data analysis and establishing databases will help promote MALDI-MSI as a routine analytical technique for hair analysis.

Key words: forensic medicine, toxicological analysis, matrix-assisted laser desorption ionization-mass spectrometry imaging (MALDI-MSI), hair, key technology, data processing, visualization, review

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