A Study of Elemental Composition and Morphology of Gunshot Residue Particles Caused by Shotguns Triggered by big toe using SEM/EDX
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Abstract
The society is facing the problems from epidemic and economic crisis causing stress and inability to find a solution to tackle. In many cases, the use of long guns to commit suicide has been increasing. It is impossible to use hand to pull the trigger. Shotguns are weapons that can be held by the public. In this research, the distribution pattern of the amount of particle and elemental composition of gunshot residue were studied by using big toe pulling the trigger. Scanning Electron Microscope/Energy Dispersive X-ray Spectroscopy, SEM/EDX was used to analyze with one-way ANOVA analysis. By using two types of rifles, consisting of the Baikal shotgun and the Remington .308 rifle with four types of bullet which are Rifled Bullet, Slug Bullet, Birdshot Bullet (80xBB) and Buckshot bullets (Ninth mm). It was found that the number of critical elemental components of GSR particles after shooting a gun from different four types of bullets compared to the same type of bullet in each interval after the shooting ranged from 0, 2, and 6 hours. In the same kind of element, the %weight values did not difference. And the particles characteristics from all four types of bullets found that the shape was quite circular and peeled orange. It shows that during the three periods of sample collection, important elements- Antimony (Sb) , Barium (Ba) and Lead (Pb) were used to confirm that they were derived from a gunpowder after firing. The application of technology in the analysis of evidence in legal cases enhances the credibility of physical evidence and contributes to the determination of the defendant's guilt or the affirmation of their innocence in the field of forensic science.
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เนื้อหาและข้อมูลในบทความที่ลงตีพิมพ์ใน วารสารวิชาการอาชญาวิทยาและนิติวิทยาศาสตร์ โรงเรียนนายร้อยตำรวจ ถิอว่าเป็นข้อคิดเห็นและความรั้บผิดชอบของผู้เขียนบทความโดยตรงซึ่งกองบรรณาธิการวารสาร ไม่จำเป็นต้องเห็นด้วยหรือรับผิดชอบใดๆ
บทความ ข้อมูล เนื้อหา รูปภาพ ฯลฯ ที่ได้รับการตีพิมพ์ใน วารสารวิชาการอาชญาวิทยาและนิติวิทยาศาสตร์ ถือว่าเป็นลิขสิทธิ์ของวารสาร วารสารวิชาการอาชญาวิทยาและนิติวิทยาศาสตร์ หากบุคคลหรือหน่วยงานใดต้องการนำทั้งหมดหรือส่วนหนึ่งส่วนใดไปเผยแพร่ต่อหรือเพื่อกระทำการใดๆ จะต้องได้รับอนุญาตเป็นลายลักษณ์อักษรจาก วารสารวิชาการอาชญาวิทยาและนิติวิทยาศาสตร์ ก่อนเท่านั้น
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