Detection of Key Elements in Gunshot Residue on Clothing at Different Times by Flame Atomic Absorption Spectroscopy (FAAS)
Article Sidebar
Main Article Content
Abstract
Currently, most criminal cases involve the use of firearms in the commission of a crime. In such cases, the crime scene may not have direct witnesses or may only present gunshot residue have found on the victim's or deceased's clothing. Therefore, it is necessary to apply scientific knowledge to analyze and identify gunshot residue. The objective is to study and compare the quantities of key elements in gunshot residue on different types of clothing using Frame Atomic Absorption Spectroscopy (FAAS) at various time intervals. The researcher conducted a study on key elements in gunshot residue from a .38 caliber revolver and .38 special lead bullets at a shooting distance of 20 inches, using four types of clothing: cotton, polyester, cotton-polyester blend, and water-repellent treated cotton. The residues were analyzed after immediate, 6, 12, and 24-hr focusing on the elements antimony (Sb), barium (Ba), and lead (Pb) using FAAS. The research findings indicated that no antimony (Sb) was detected in the gunshot residue at any of the time intervals, but barium (Ba) was detected, with the highest concentration found on cotton-polyester blend fabric. Lead (Pb) was also detected, with the highest concentration on cotton fabric. A comparison of the key elements in the gunshot residue revealed that the type of clothing and the time interval influenced the concentration of lead (Pb) in the residue, while it had no effect on the concentration of antimony (Sb) and barium (Ba), which did not show significant differences at a statistical significance level of 0.05.
Article Details
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
เนื้อหาและข้อมูลในบทความที่ลงตีพิมพ์ใน วารสารวิชาการอาชญาวิทยาและนิติวิทยาศาสตร์ โรงเรียนนายร้อยตำรวจ ถิอว่าเป็นข้อคิดเห็นและความรั้บผิดชอบของผู้เขียนบทความโดยตรงซึ่งกองบรรณาธิการวารสาร ไม่จำเป็นต้องเห็นด้วยหรือรับผิดชอบใดๆ
บทความ ข้อมูล เนื้อหา รูปภาพ ฯลฯ ที่ได้รับการตีพิมพ์ใน วารสารวิชาการอาชญาวิทยาและนิติวิทยาศาสตร์ ถือว่าเป็นลิขสิทธิ์ของวารสาร วารสารวิชาการอาชญาวิทยาและนิติวิทยาศาสตร์ หากบุคคลหรือหน่วยงานใดต้องการนำทั้งหมดหรือส่วนหนึ่งส่วนใดไปเผยแพร่ต่อหรือเพื่อกระทำการใดๆ จะต้องได้รับอนุญาตเป็นลายลักษณ์อักษรจาก วารสารวิชาการอาชญาวิทยาและนิติวิทยาศาสตร์ ก่อนเท่านั้น
References
Ahphon, W. (2020). Detection of gunpowder residue in the nasal cavity using ICP-MS technique. http://www.vettech.ku.ac.th/vtqa/2556/files/5.1-2-02.pdf Journal of Criminology and Forensic Science, 12(2), 26-40.
Jaruwarakun, T. (2005). Principles and solutions of atomic absorption spectrometers. http://www1.dpim.go.th/dt/pper/000001124857266.pdf
Kaewbuth, O. & Sukhawat, S. (2014). Distribution of GSR particle in Car of shooting by Atomic Absorption Spectrophotometry. Veridian E-Journal Science and Technology Silpakorn University. 1(2). 95-115.
Kara, l., & Yalcinkaya, O. (2017). Evarution of persistence of gunshot residue (GSR) using graphite furnace atomic absorption spectrometry (GFAAS) method Journal of Bulgarian chemical communications, 49(1), 101-108.
Sahu, K., Kennao, P., Gupta, A.K., Saran, V. & Waghmare, N.P. (2018). Study of 9mm Improvised Pistol Pattern & Gunshot Residue with respect to Different Range. International Journal of Computer Sciences and Engineering. 6(5). 155-160.
Katherine, A. R., Galyn, F., & Amanda, R. D. (2019). Identification of polygonal barrel rifling charateristics in bullet wipe residue deposited on textes. International Journal of Legal Medicine, 134(2), 1-10.
Mahacharoen, T. (2018). The determination of atomic compositions on bullet casesby Scanning Electron Microscope/Energy Dispersive X-ray Spectroscopy for forensic application. Journal of Criminology and Forensic Science. 4(1). 26-41.
Mingchanid, P. & Kulnides, N. (2017). Study on Persistence of Gunshort Residue After Shooting From 9 mm Pistol on Back of Hands and Palms with Different Persistent. KKU Research Journal, 17(3), 8-18.
Phermpornsagul, Y. (2021). Techniques and Methods for Gunshot Residue Analysis to Enhance Confidence in the Justice Process: From the Past to Present and Future Direction. Thai Journal of Physics, 38(1), 22-38.
Phuttachot, B. (2017). High performance fibers) to reform the textile and clothing industry. https://www.oie.go.th/assets/portals/1/fileups/2/files/ArticlesAnalysis/high_performance_fibers.pdf
Polnpak, A. (2011). A comparative examination of elements from gunshot residue and other sources. [Master’s thesis, Silpakorn University].
Poruprasert, W. (2013). Determination of nitrates and nitrites in gunshot residues deposited on cloths by the technique of Ion-chromatography. [Master’s thesis, Silpakorn University].
Ratchakhom, P & Sinloyma, P. (2021). Comparison of the Physical Characteristics and Gunshot Residue in Fabrics after Firing with SEM/EDX Technique. Suan Dusit Graduate School Academic Journal, 17(3), 113-128.
Wongkaew, P. & Uthipan, C. (2007). Analysis of Antimony Lead and Barium in Gunshot Residue by Voltammetry Technique. https://fulltext.rmu.ac.th/fulltext/2550/79748/79748.pdf
Zhang, J., Dong, Y., & Xu, Z. (2016). A simple method for the simultaneous determination of trace cadmium and silver in soil samples by dynamic reaction cell inductively coupled plasma mass spectrometry. Atomic spectroscopy, 37(4). 131-170.
