Differential pulse anodic stripping voltammetry of lead and antimony in gunshot residues |
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| Institution: | 1. Department of Physics, Shri Mata Vaishno Devi University, Katra, 182320, J&K, India;2. Institute of Forensic Science and Criminology, Panjab University, Sector-14, Chandigarh, 160014, UT, India;3. Department of Physics, University of the Free State, P.O. Box 339, Bloemfontein, ZA9300, South Africa;1. Department of Chemical Engineering, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia;2. Faculty of Chemical Engineering, Universiti Teknologi MARA, 13500 Permatang Pauh, Pulau Pinang, Malaysia;3. Department of Chemistry, Al-Karkh University of Science, Baghdad 10066, Iraq;4. Research Centre for Nano-Materials and Energy Technology (RCNMET), School of Science and Technology, Sunway University, Bandar Sunway, 47500 Petaling Jaya, Malaysia;5. Department of Engineering, Lancaster University, Lancaster, LA1 4YW, UK;1. Forensic Science Service of the Beijing Public Security Bureau, 100192, Beijing, China;2. Taiyuan Public Security Bureau, 030001, Taiyuan, China;3. Beijing Microread Genetics Co., Ltd., 100045, Beijing, China;4. Suzhou Microread Genetics Co., Ltd., 215002, Suzhou, China;1. Department of Radiology, University of Pittsburgh Medical Center and School of Medicine, Pittsburgh, Pennsylvania;2. Department of Surgery, University of Pittsburgh Medical Center and School of Medicine, Pittsburgh, Pennsylvania |
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| Abstract: | Differential pulse anodic stripping voltammetry (DPASV) using a glassy carbon/mercury film electrode (GC/MFE) has been applied for characterization and quantitative detection of gunshot residues (GSR). This technique allows for simultaneous detection of Pb and Sb from GSR hand swabs that is simple, fast, and non-destructive. The use of a KNO3/hydrazine sulfate matrix, instead of HCl, reduces possible interferences and allows for a small sample size to be used in analysis but yielding greater sensitivity. |
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