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NCJRS Abstract

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NCJ Number: 113142 Add to Shopping cart Find in a Library
Title: Multielement Analysis of Bullet Lead by Inductively Coupled Plasma-Atomic Emission Spectrometry
Journal: Crime Laboratory Digest  Volume:15  Issue:2  Dated:(April 1988)  Pages:33-38
Author(s): C A Peters; D G Havekost; R D Koons
Date Published: 1988
Page Count: 6
Sponsoring Agency: National Institute of Justice/
Rockville, MD 20849
NCJRS Photocopy Services
Rockville, MD 20849-6000
Sale Source: National Institute of Justice/
NCJRS paper reproduction
Box 6000, Dept F
Rockville, MD 20849
United States of America

NCJRS Photocopy Services
Box 6000
Rockville, MD 20849-6000
United States of America
Type: Research (Applied/Empirical)
Language: English
Country: United States of America
Annotation: This article describes a method for determining the concentrations of six elements in bullet lead using inductively coupled plasma-atomic emission spectrometry (ICP-AES).
Abstract: Triplicate samples of approximately 120 mg of lead were removed from the interior of each bullet sample and analyzed for concentrations of silver (Ag), bismuth (Bi), aluminum (Al), arsenic (As), copper (Cu), antimony (Sb), and tin (Sn). With the analytical wavelengths and operating conditions used in this study, no interelement interferences were observed when the elements are present in the ranges typically found in bullet lead. A scanning monochromator with relatively good resolution permitted baseline measurements to be made and minimized most interferences. Nebulization effects were minimized by mathing lead and acid concentrations in samples and standards. The procedure produced results with good precision and agreement with neutron activation analysis results for Sb and Cu and for As in lead containing a high concentration of As. In addition, ICP-AES allows for determination of additional elements, Ag, Bi, and Sn. Data on the analytical and observed ranges for each of these elements and mean relative standard deviations of triplicates measurements from 50 bullets are included. 14 references.
Main Term(s): Metal identification
Index Term(s): Forensic sciences; Research methods; Spectroscopy
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