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Updated: Jun 8, 2025

Preparation and Application of a New Bacterial Biosensor for the Presumptive Detection of Gunshot Residue
07:09

Preparation and Application of a New Bacterial Biosensor for the Presumptive Detection of Gunshot Residue

Published on: May 9, 2019

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探索通过功能化粒子合矩阵辅助激光脱/电离质谱仪在指纹中检测火药残留物

Sunil S Adav1, Yan Wen Crystal Tan2, Choon Teck Low1

  • 1School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore. kwng@ntu.edu.sg.

The Analyst
|November 7, 2024
PubMed
概括

这项研究引入了功能化的磁粒子来可视化指纹,成功地将枪支残留物 (GSR) 与使用MALDI-ToF-MS的普通打印物区分开来. 这一进步增强了法医分析,并加强了指纹证据.

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MALDI-TOF Mass Spectrometry01:19

MALDI-TOF Mass Spectrometry

Mass spectrometry is a powerful characterization technique that can identify and separate a wide variety of compounds ranging from chemical to biological entities, based on their mass-to-charge ratio (m/z). The instruments that allow this detection, known as mass spectrometers, have three components: an ion source, a mass analyzer, and a detector. These spectrometers differ based on the nature of their ion source and analyzers.
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Matrix-assisted laser desorption ionization (MALDI) is a powerful analytical technique used in mass spectrometry. It enables the identification and characterization of various biomolecules, including proteins, peptides, nucleic acids, and carbohydrates. MALDI spectrometry is widely employed in biological and medical research, as well as in fields like pharmacology and biochemistry.
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Gas Chromatography: Types of Detectors-II

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