Fingermarks development on gloves: Relative efficiency of 1,2 Indanedione/ZnCl2, ninhydrin and wet powder |
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| Institution: | 1. Forensic Science Laboratory of the French Gendarmerie, 5 boulevard de l’Hautil, BP 60036 ERAGNY, 95001 CERGY PONTOISE cedex, France;2. University of Maine Institute of Technology, Chemistry Department, Avenue Olivier Messiaen, 72085 LE MANS cedex 9, France;1. Reparto Carabinieri Investigazioni Scientifiche (R.I.S.), Parma, Italy;2. Bunderskriminalamt (BKA), Wiesbaden, Germany;3. Reparto Carabinieri Investigazioni Scientifiche (R.I.S.), Messina, Italy;1. Forensic Science Section, Changhua County Police Bureau, 778 Sec. 2, Jhong-jheng Rd., Changhua City, Changhua 50004, Taiwan, ROC;2. Department of Forensic Science, Central Police University, 56 Shu-Jen Road, Kwei-San, Taoyuan 33304, Taiwan, ROC;3. Fingerprint Division, Criminal Investigation Bureau, 5 Lane 553, Chung Hsiao East Road Section 4, Xin-yi Area, Taipei 11072, Taiwan, ROC;1. Forensic Science Program, Cedar Crest College, Allentown, PA 18104, United States;2. Delaware Division of Forensic Science, Wilmington, DE, United States;1. Instituto de Biologia do Exército, Rio de Janeiro, Brazil;2. Laboratório de Diagnósticos por DNA, DECOL, IBRAG, Universidade do Estado do Rio de Janeiro, Brazil;1. University of Surrey, Guildford, England, United Kingdom;2. Home Office Centre for Applied Science and Technology, Sandridge, England, United Kingdom;3. Nottingham Trent University, Nottingham, England, United Kingdom |
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| Abstract: | Powder suspensions such as wet powder are used to develop fingermarks on adhesive surfaces. They can also be used on gloves but these ready-to-use commercial pre-mixed solutions are not entirely satisfactory. Among other things, they generate some background noise that can sometimes be substantial and make the exploitation of the fingermarks difficult. Recent studies have proven the effectiveness of a HFE ninhydrin solution on some types of gloves. Ninhydrin and 1,2-indanedione are reagents that are commonly used for the visualisation of fingermarks on porous and semi-porous substrates. Applying them on gloves might help to overcome the issue of background noise being produced by powder suspensions. In this study, several formulations of ninhydrin and 1,2-indanedione are compared to wet powder on a sample of nitrile, latex and vinyl gloves. The subsequent results show a greater effectiveness with the use of wet powder. |
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| Keywords: | Glove Ninhydrin Indanedione Wet powder Papillary mark |
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