Small particle reagent based on crystal violet dye for developing latent fingerprints on non-porous wet surfaces

Egyptian Journal of Forensic Sciences

卷:5

A.K. Kapoor¹  G.S. Sodhi²  Richa Rohatgi³ 

[1] Department of Anthropology, University of Delhi, Delhi 110007, India;

[2] Department of Chemistry, S.G.T.B. Khalsa College, University of Delhi, Delhi 110007, India;

[3] UGC-JRF, Department of Anthropology, University of Delhi, Delhi 110007, India;

关键词: Latent fingerprints;    Forensic;    Small particle reagent;   

DOI  :  10.1016/j.ejfs.2014.08.005

来源: DOAJ

【 摘 要 】

Small particle reagent (SPR) is a widely used method for developing latent fingerprints on non-porous wet surfaces. SPR based on zinc carbonate hydroxide monohydrate, ZnCo3·2Zn(OH)2·H2O – also called basic zinc carbonate – has been formulated. The other ingredients of the formulation are crystal violet dye and a commercial liquid detergent. The composition develops clear, sharp and detailed fingerprints on non-porous items, after these were immersed separately in clean and dirty water for variable periods of time. The ability of the present formulation to detect weak and faint chance prints not only enhances its utility, but also its potentiality in forensic case work investigations. The raw materials used to prepare the SPR are cost-effective and non-hazardous.

【 授权许可】

Unknown