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
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
收藏
页码:387 / 393
页数:7
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