Accession Number : ADA325530

Title :   Detecting Metallic Primary Explosives with a Portable X-ray Fluorescence Spectrometer.

Descriptive Note : Special rept.,

Corporate Author : COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH

Personal Author(s) : Hewitt, Alan D.

PDF Url : ADA325530

Report Date : APR 1997

Pagination or Media Count : 14

Abstract : X-ray fluorescence spectrometry (XRF) analysis is a practical means of performing in-situ screening to establish the presence of high concentrations (>0.1% or 1000 ppm) of lead (Pb) and/or mercury (Hg). These two metals are of special military interest because they are constituents in three primary explosives; lead azide Pb(N3)2, lead styphnate (C6HO6N3Pb), and mercury fulminate Hg(CNO)2. The success of in-situ XRF analysis to perform this task depends on instrumental sensitivity, selectivity, effective sample volume, transportability, and user friendliness. Laboratory experiments established that the MAP-3 XRF spectrum analyzer (SCITEC Corporation) is well-suited for this application. This instrument is self-contained, portable, and equipped with a Co-57 source that allows for a simultaneous analysis of both the K and L energy lines of Pb and Hg, among other metals. Laboratory experiments established that high concentrations of Pb and Hg could be detected in an active sample area of cylindrical shape, approximately 1.0 cm in diameter and 1.5 cm in depth.

Descriptors :   *PORTABLE EQUIPMENT, *METALS, *FLUORESCENCE, *EXPLOSIVES, *MERCURY, *LEAD COMPOUNDS, *SPECTROMETERS, *X RAY APPARATUS, CYLINDRICAL BODIES, CONCENTRATION(COMPOSITION), SPECTRUM ANALYZERS, COBALT, STYPHNATES.

Subject Categories : Inorganic Chemistry
      Ammunition and Explosives
      Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE