Detection of firearm discharge residue from skin swabs using trapped ion mobility spectrometry coupled to mass spectrometry
Detection of firearm discharge residue from skin swabs using trapped ion mobility spectrometry coupled to mass spectrometry
复制标题
使用俘获离子迁移谱与质谱联用检测皮肤拭子中的枪支放电残留物
DOI:
10.1039/c8ay00658j
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发表时间:
2018
影响因子:
3.1
通讯作者:
Fernandez-Lima, Francisco
中科院分区:
文献类型:
--
作者:
McKenzie-Coe, Alan;Bell, Suzanne;Fernandez-Lima, Francisco
In the present work, a novel workflow for the detection of both elemental and organic constituents of the firearm discharge residue from skin swabs was developed using trapped ion mobility spectrometry coupled to mass spectrometry. The small sample size (<10 μL), high specificity and short analysis time (few min) permits the detection of inorganic residues (IGSR; inorganic gunshot residues) and organic residues (OGSR) from one sample and in a single analysis. The analytical method is based on the simultaneous extraction of inorganic and organic species assisted by the formation organometallic complexes (e.g., 15–5 crown ethers for the sequestering of metals and nitrate species), followed by fast, post-ionization, high resolution mobility (RIMS ∼ 150–250) and mass separations (RMS ∼ 20–40k) with isotopic pattern recognition. The analytical performance is illustrated as a proof of concept for the case of the simultaneous detection of Ba+2, Pb+2, Cu+, K+, NO3−, diphenylamine (DPA), ethyl centralite (EC) and 2,4 dinitrotoluene (DNT) in positive and negative nESI-TIMS-MS modes. Candidate structures are proposed and collisional cross sections are reported for all organic and organometallic species of interest.
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影响因子:
2.2
作者:
Benito, Sandra;Abrego, Zurine;Barrio, Ramon J.
通讯作者:
Barrio, Ramon J.
影响因子:
1.6
作者:
Laza, Desire;Nys, Bart;Moucheron, Cecile
通讯作者:
Moucheron, Cecile
影响因子:
2.2
作者:
C. Mahoney;G. Gillen;A. Fahey
通讯作者:
A. Fahey
影响因子:
1.6
作者:
Freitas, Joao Carlos D.;Souza Sarkis, Jorge E.;Viebig, Sonia Bocamino
通讯作者:
Viebig, Sonia Bocamino
影响因子:
4.2
作者:
Christopher, Matthew E.;Warmenhoeven, John-William;Bailey, Melanie J.
通讯作者:
Bailey, Melanie J.