เปรียบเทียบอนุภาคของเขม่าที่ได้รับจากการประกอบอาชีพและเขม่าปืนชนิด Lead-free (Comparison of Particles of Occupation Origins Residues and Lead-free Gunshot Residues)

Authors

  • อัษฎายุทธ ผลภาค Silpakorn University
  • นรงค์ ฉิมพาลี Silpakorn University
  • โกสินทร์ หินเธาว์ Silpakorn University

Keywords:

Lead-free ammunitions, Particles of gunshot residues, Particles of occupation origins

Abstract

The objective of this research is to analyze the differences between the particles of occupation origins and gunshot residues (GSR) delivered from Lead-free ammunitions. The results can be used as a guide to identify who is innocent of a crime. The studies focused on the elemental composition of particles of occupation origins in 1-15 µm spherical shape, and compare the morphology of the particles with particles of Lead-free GSR. The determinations were carried out using SEM/EDX. The results show that the most of particles contained Si as the major component and Al as the minor elements. A group of particles is an essential element of Lead-free GSR particles and can be found at installation and repair automotive glass workers, automotive painters, and ceramic workers. The comparison with particles of Lead-free GSR found that only particles from the automotive glass workers -6 contained the elemental composition which is the same as particles from Winchester WinCleanTM, and the automotive painters-4 which have elements of similar particles of Remington/UMC LeadLessTM. By studying and analyzing the morphology of those particles, the results are different from particles of Lead-free GSR.

Downloads

Published

2014-10-30

Issue

Section

วิทยาศาสตร์กายภาพ