Applied Spectroscopy · 1975 · 31 citations · 4 references
Natural SciencesChemistryToxicologyAnalytical ChemistryElemental AnalysisSpectroscopyAtomic Absorption SpectroscopyAtomic SpectroscopyElemental Composition AnalysisForensic AnalysisInorganic Elemental AnalysisInstrumental AnalysisAcid LeachingFlame Atomic Absorption SpectrometryFlame Atomic Absorption SpectroscopyForensic ChemistryForensic Sample AnalysisGunshot Residue AnalysisLeachingPlasma Ashing
A flameless atomic absorption technique, employing a tantalum strip atomizer, has been developed to determine barium and antimony in gunshot residue. Cotton swabs, wetted with 5% HNO 3 , are used to collect residue. Barium and antimony are released from the swabs by acid leaching or plasma ashing. Both techniques give good recoveries; the ashing technique is preferred for blood-stained swabs. The sensitivity for barium is 0.1 ng/10 µl and antimony 0.2 ng/10 µl. At nanogram levels the standard relative deviation for barium is 8.3% and for antimony 8.5%.
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The analytical use of atomic absorption spectra
Spectrochimica Acta · 1961 · 219 citations
Natural Sciences, Chemistry, Physics +13