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DEVELOPMENT AND OPTIMIZATION OF ANALYTICAL METHODS FOR SIMULTANEOUS DETERMINATION OF IM AND LEGACY EXPLOSIVE COMPOUNDS
Crouch, R.A., J.C. Smith, B.S. Stromer, C.T. Hubley, S. Beal, G.R. Lotufo, A.D. Butler, et al. SERDP Project ER-2722, 99 pp, 2019

High-performance liquid chromatography (HPLC) methods to extract, pre-concentrate, and analytically separate and quantify 24 legacy and insensitive munition (IM) compounds were developed as a single, standardized method for simultaneous analysis in environmental matrices. The solid-phase extraction method was tested on 5 water sources, including river, sea, and groundwater. A 2-step solvent extraction method was developed and tested on 5 field soils. Recoveries of all 24 compounds of interest for all soils were within quality systems manual (QSM) limits. A single 18-h solvent extraction method was developed for soil-dwelling invertebrate, freshwater vertebrate, marine invertebrate, and perennial plant tissues. For most tissues, ≥20 compounds of interest were recovered within current QSM limits. In order to address observed analytical interferences, a post-extraction preparative chromatographic method was developed to improve recoveries of several compounds in tissues, including nitroguanidine and 3-nitro-1,2,4-triazol-5-one. New HPLC methods reduced total analytical run time by ~25% versus the use of separate legacy and IM methods and could reduce labor and supply costs by 50%. https://www.serdp-estcp.org/content/download/49779/490495/file/ER-2722%20Final%20Report.pdf



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