Detection of nitro-organic and peroxide explosives in latent fingermarks by DART- and SALDI-TOF-mass spectrometry

被引：90

作者：

Rowell, Frederick ^{[1
]}

Seviour, John ^{[2
]}

Lim, Angelina Yimei ^{[3
,5
]}

Elumbaring-Salazar, Cheryl Grace ^{[3
]}

Loke, Jason ^{[4
]}

Ma, Jan ^{[5
]}

机构：

[1] Fingerprinting Analyt Ltd, Chester DH3 3LS, Cheshire, England

[2] Forens Ltd, Great Malvern WR14 3SZ, Worcs, England

[3] Nanofrontier Pte Ltd, Singapore 637553, Singapore

[4] CID, Forens Management Branch, Singapore 088762, Singapore

[5] Nanyang Technol Univ, Sch Mat Sci & Engn, Singapore 639798, Singapore

来源：

FORENSIC SCIENCE INTERNATIONAL | 2012年 / 221卷 / 1-3期

关键词：

DART-mass spectrometry; SALDI-TOF-mass spectrometry; Nitro-organic and peroxide explosives; Lifted latent fingermarks; Dusting powder; Contact residues; Stability;

D O I：

10.1016/j.forsciint.2012.04.007

中图分类号：

DF [法律]; D9 [法律]; R [医药、卫生];

学科分类号：

0301 ; 10 ;

摘要：

The ability of two mass spectrometric methods, surface-assisted laser desorption/ionization-time of flight-mass spectrometry (SALDI-TOF-MS) and direct analysis in real time (DART-MS), to detect the presence of seven common explosives (six nitro-organic-and one peroxide-type) in spiked latent fingermarks has been examined. It was found that each explosive could be detected with nanogram sensitivity for marks resulting from direct finger contact with a glass probe by DART-MS or onto stainless steel target plates using SALDI-TOF-MS for marks pre-dusted with one type of commercial black magnetic powder. These explosives also could be detected in latent marks lifted from six common surfaces (paper, plastic bag, metal drinks can, wood laminate, adhesive tape and white ceramic tile) whereas no explosive could be detected in equivalent pre-dusted marks on the surface of a commercial lifting tape by the DART-MS method due to high background interference from the tape material. The presence of TNT and Tetryl could be detected in pre-dusted latent fingermarks on a commercial lifting tape for up to 29 days sealed and stored under ambient conditions. (C) 2012 Elsevier Ireland Ltd. All rights reserved.

引用

页码：84 / 91

页数：8

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