基于飞行时间二次离子质谱成像技术的人民币上指纹化学成像研究

引用本文: 李文杰, 孙令辉, 游伟, 王利雪, 赵雅彬, 李展平. 基于飞行时间二次离子质谱成像技术的人民币上指纹化学成像研究[J]. 分析化学, 2020, 48(11): 1511-1518. doi: 10.19756/j.issn.0253-3820.201350 shu

Citation: LI Wen-Jie, SUN Ling-Hui, YOU Wei, WANG Li-Xue, ZHAO Ya-Bin, LI Zhan-Ping. Chemical Imaging of Fingerprint on RMB Banknotes Using Time-of-Flight Secondary Ion Mass Spectrometry[J]. Chinese Journal of Analytical Chemistry, 2020, 48(11): 1511-1518. doi: 10.19756/j.issn.0253-3820.201350 shu

基于飞行时间二次离子质谱成像技术的人民币上指纹化学成像研究

李文杰 ^1, ,
孙令辉 ^1, ,
游伟 ^1, ,
王利雪 ^1, ,
赵雅彬 ^{1,
,} ,
李展平 ^{2,3,
,}

1.
中国人民公安大学侦查学院, 北京 100038;
2.
清华大学分析中心, 北京 100084;
3.
清华大学化学系有机光电子与分子工程教育部重点实验室, 北京 100084

通讯作者: 赵雅彬,zhaoyb04@gmail.com; 李展平,Zhanpingli@mail.tsinghua.edu.cn

基金项目:
本文系中国人民公安大学基本科研课题项目（No.2019JKF216）和国家重点研发计划项目（2018YFA0702600）资助

摘要: 长期流通过的人民币上潜在指纹的显现一直是法庭科学领域研究的难点之一。飞行时间二次离子质谱（TOF-SIMS）技术具有原位、准无损、高通量、可多组分平行分析和空间分辨率高等优势。本研究利用TOF-SIMS技术对人民币表面的潜在指纹进行化学成像，比较了TOF-SIMS与几种传统方法的显现效果，研究并分析此技术具有的独特优势，从普适性、灵敏度和指纹三级特征获取的角度进一步探讨了方法的适用性。利用此技术对指纹中的外源性物质进行了分析，检测出保湿乳成分中丙三醇的分子离子峰（m/z 92.06）和碎片离子峰（m/z 43.02），并显示清晰的指纹图像。研究结果表明，TOF-SIMS技术为长期流通过的人民币上潜在指纹的显现提供了一种有效的方法，并有望用于其表面上指纹中物质的检测。

关键词:

English

Chemical Imaging of Fingerprint on RMB Banknotes Using Time-of-Flight Secondary Ion Mass Spectrometry

1.
Academy of Investigate, People's Public Security University of China, Beijing 100038, China;
2.
Analysis Center, Tsinghua University, Beijing 100084, China;
3.
Department of Chemistry, Key Laboratory of Organic Optoelectronics&Molecular Engineering of Ministry of Education, Tsinghua University, Beijing 100084, China

Corresponding author: ZHAO Ya-Bin, ; LI Zhan-Ping,

Received Date: 15 June 2020
Revised Date: 14 September 2020
Fund Project:
This work was supported by the Basic Research Project of People's Public Security University of China (No. 2019JKF216) and the National Key R&D Program of China (No. 2018YFA0702600).

Abstract: The development of latent fingerprints on long-circulated RMB banknotes has been one of the difficulties in forensic science research. In this work, time-of-flight secondary ion mass spectrometry (TOF-SIMS) was used to perform chemical imaging of latent fingerprints on the surfaces of the substrates due to its advantages such as in-situ, quasi-nondestructive, high-throughput, simultaneous analysis of multi-components and high spatial resolution. The developing effect of TOF-SIMS was firstly compared with that of several traditional methods, and the reasons for the unique advantages of TOF-SIMS were discussed. Secondly, its applicability was further discussed from the perspective of universality, sensitivity and fingerprint three-level feature acquisition capability. Finally, exogenous substances in fingerprints were also analyzed by using this technique to detect the molecular ions (m/z 92.06) and fragment ion peaks (m/z 43.02) of glycerol in the moisture lotion and developed clear fingerprint images. Preliminary research results showed that TOF-SIMS technique could provide an effective method for the development of latent fingerprints on long-circulated RMB banknotes and was expected to be used for the detection of substances in fingerprints on the surface of the substrates.

Key words:

Time-of-flight secondary ion mass spectrometry
/ RMB banknotes
/ Fingerprint analysis
/ Chemical imaging

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基于飞行时间二次离子质谱成像技术的人民币上指纹化学成像研究

通讯作者: 赵雅彬,zhaoyb04@gmail.com; 李展平,Zhanpingli@mail.tsinghua.edu.cn

English

Chemical Imaging of Fingerprint on RMB Banknotes Using Time-of-Flight Secondary Ion Mass Spectrometry

Corresponding author: ZHAO Ya-Bin, ; LI Zhan-Ping,

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

基于飞行时间二次离子质谱成像技术的人民币上指纹化学成像研究

通讯作者: 赵雅彬,zhaoyb04@gmail.com; 李展平,Zhanpingli@mail.tsinghua.edu.cn

English

Chemical Imaging of Fingerprint on RMB Banknotes Using Time-of-Flight Secondary Ion Mass Spectrometry

Corresponding author: ZHAO Ya-Bin, ; LI Zhan-Ping,

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南： 你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

CCS Chemistry：静电组装导向聚合- 聚电解质纳米凝胶量化制备新策略

CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

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