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  • P-ISSN 1225-0163
  • E-ISSN 2288-8985

Improved Separation of Organic Explosives by Modified Micellar Electrokinetic Capillary Chromatography

Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
1997, v.10 no.5, pp.325-331
Park, Sung-Woo
Yang, Young-Geun
Hong, Sungwook
Kim, Taek-Jae
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Abstract

Among various CE separation methods, micellar electrokinetic capillary chromatography(MECC) method using sodium dodecylsulfate(SDS) provides rapid and accurate separation of organic explosive constituents with easy. The running buffer was composed with 2.5 mM borate and 25mM SDS(pH 8.5). Addition of 1M urea and 10% organic modifiers (acetonitrile, methanol and ethanol) improves the resolution of adjacent explosive constituents. When 15 explosive constituents were developed in MECC, most constituents were separated successively while RDX/TNB and DNN/DEP were not, and detection limits of separated compounds are in range of 1 to 4 ppm.

keywords
micellar electrokinetic capillary chromatography, explosive constituents, sodium dodecylsulfate, urea, organic modifier


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