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  Home > JCE Print > Journal of Chemical Education > Issues > 1999  > April  >
Chemistry Everyday for Everyone
Chemical Methods for Developing Latent Fingerprints
Gurvinder S. Sodhi
Department of Chemistry, SGTB Khalsa College, University of Delhi, Delhi-110007, India

Jasjeet Kaur
College of Applied Sciences for Women, Delhi University, Jhilmil Colony, Vivek Vihar, Delhi-110095, India

Cover
April 1999
Vol. 76 No. 4
p. 488A
Abstract
Sweat secreted by the eccrine glands on the fingertips is deposited on surfaces the fingers touch. The deposition in the form of contours, which are the mirror images of the ridge patterns on the fingers. The patterns formed by fingerprints fall into three well-defined categories: arches, loops, and whorls (Figure 1, Student Side). The constituents of sweat may be selectively fixed by different chemical reagents so as to make latent (invisible) fingerprints visible.
Supplement
The activity sheet is available as supplement material, which can be accessed as a pdf file using Acrobat Reader.
*  Contents
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*  Citation
 Sodhi, Gurvinder S.; Kaur, Jasjeet. J. Chem. Educ. 1999 76 488A.
*  Keywords
 Laboratory Instruction; Collaborative / Cooperative Learning; Forensic Chemistry; Teaching / Learning Aids; Teaching/Learning Theory/Practice
*  History
 Created:
Last Updated:		 June 14, 1999
June 23, 2005
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