Analysis of Black Powder by Ion Mobility-Time-of-Flight Mass Spectrometry

被引：21

作者：

Crawford, Christina L. ^{[1
]}

Boudries, Hacene ^{[2
]}

Reda, Ralph J. ^{[2
]}

Roscioli, Kristyn M. ^{[1
]}

Kaplan, Kimberly A. ^{[1
]}

Siems, William F. ^{[1
]}

Hill, Herbert H., Jr. ^{[1
]}

机构：

[1] Washington State Univ, Dept Chem, Pullman, WA 99164 USA

[2] Morpho Detect Inc, Wilmington, MA 01887 USA

来源：

ANALYTICAL CHEMISTRY | 2010年 / 82卷 / 01期

基金：

美国国家科学基金会;

关键词：

GUNSHOT RESIDUE; CHROMATOGRAPHY;

D O I：

10.1021/ac902168a

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Ion mobility-time-of-flight mass spectrometry (IM-TOFMS) was used to identify and correlate response ions associated with three black powder samples by mass and mobility. Vapors produced by thermal desorption of the black powders were ionized by a Ni-63 source; subsequent response ions were separated and identified using IM-TOFMS. The same response ions were found for each black powder regardless of geographic origin. The most intense mass and mobility peaks were attributed to ionic forms of sulfur allotropes (S-32(n)-, where n = 1-5). Vapor samples from GOEX black powder were also analyzed by two stand-alone ion mobility spectrometry systems, yielding an average reduced mobility value (K-o) of 2.28 +/- 0.02 cm(2) V-1 s(-1) for black powder across all three instruments.

引用

页码：387 / 393

页数：7

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