APPLICATION OF ION MOBILITY SPECTROMETRY TO THE IDENTIFICATION OF TRACE LEVELS OF EXPLOSIVES IN THE PRESENCE OF COMPLEX MATRICES

被引:25
作者
GAROFOLO, F
MIGLIOZZI, V
ROIO, B
机构
[1] Divisione Aerea Studi Ricerche e Sperimentazioni, Armament and Aerospace Systems Department, Rome
[2] Barringer Research Ltd, Rexdale, Ontario, M9W 5G2
关键词
Ethylene - Ethylene glycol - Explosives detection - High performance liquid chromatography - Ion mobility spectrometers - Nitrates - Phase separation - Spectrometry;
D O I
10.1002/rcm.1290080707
中图分类号
Q5 [生物化学];
学科分类号
071010 ; 081704 ;
摘要
Methods are described for the analysis of trace levels of explosives on materials collected at the scene of real detonations. The methods exploit ion mobility spectrometry (IMS) to confirm and enhance the results obtained by high performance liquid chromatography with an ultraviolet detector (HPLC-UV). Solvent-extracted samples contain many interfering substances and are cleaned up by solid-phase extraction (SPE) prior to HPLC fractionation. Explosive-containing HPLC fractions are analysed by IMS after removal of solvent by vacuum centrifuge. IMS detection limits for explosives, typically a few hundreds of picograms, are at least an order of magnitude lower than those for UV detection. SPE and HPLC fractionation also removes interfering substances that can otherwise suppress IMS detection. Explosives discussed are di- and trinitrotoluene, ethylene glycol dinitrate, nitroglycerin, pentaerythritol tetranitrate, hexahydro-1,3,5-trinitro-1,3,5-triazine, octahydro-1,3,5,7-tetranitro-1,3,5,7-tetraazine, and N-methyl-N,2,4,6-tetranitroaniline.
引用
收藏
页码:527 / 532
页数:6
相关论文
共 9 条
  • [1] BENEDETTI M, IN PRESS RASSEGNA CH
  • [2] Carr T. W., 1984, PLASMA CHROMATOGRAPH
  • [3] DANYLEWICHMAY LL, 1992, 1ST P INT S EXPL DET, P672
  • [4] DANYLEWYCHMAY LL, 1993, ADVANCES IN ANALYSIS AND DETECTION OF EXPLOSIVES, P385
  • [5] EICEMAN GA, 1994, ION MOBILITY SPECTRO
  • [6] FETTEROLF DD, 1993, ADVANCES IN ANALYSIS AND DETECTION OF EXPLOSIVES, P117
  • [7] FETTEROLF DD, 1992, 1ST P INT S EXPL DET, P689
  • [8] KARASEK FW, 1976, ANAL CHEM, V45, pA710
  • [9] IONIZATION OF NITROTOLUENE COMPOUNDS IN NEGATIVE-ION PLASMA CHROMATOGRAPHY
    SPANGLER, GE
    LAWLESS, PA
    [J]. ANALYTICAL CHEMISTRY, 1978, 50 (07) : 884 - 892