An investigation of isatin as a potential reagent for latent fingermark detection on porous surfaces

J Chan, R Shimmon, Xanthe Spindler, Philip Maynard, Chris Lennard, Claude Roux, B Stuart

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

A number of parameters were investigated, including concentration, solvent system, pH of the solution, and optimization of the development conditions. It was determined that isatin at a concentration of 0.05 percent (w/v) provided the optimum balance between the luminescence of the fingermark ridges and background. A carrier solvent of dioxane mixed with acetone [12.5 percent (v/v)] produced the most intense luminescence. It was determined that the optimum pH for the development of fingermarks was 5.0 and that this could be reached by the addition of 4 percent (v/v) sodium carbonate buffer. The use of a dry heat press at 180 degrees C for 10 s provided optimal development conditions. The possible enhancement of isatin-treated fingermark impressions using metal salts was investigated and it was determined that secondary treatment with an ethanolic zinc chloride solution provided enhanced luminescence emission. However, little color change to the developed fingermarks was observed. A comparison of isatin with 1,2-indanedione-zinc (IND-Zn) and DFO demonstrated that the latter two reagents provided greater sensitivity and luminescence than isatin despite the fact that isatin generated strong room-temperature luminescence
Original languageEnglish
Pages (from-to)321-335
Number of pages15
JournalJournal of Forensic Identification
Volume60
Issue number3
Publication statusPublished - 2010

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Isatin
Luminescence
Acetone
Zinc
Buffers
Color
Salts
Hot Temperature
Metals
Temperature

Cite this

Chan, J., Shimmon, R., Spindler, X., Maynard, P., Lennard, C., Roux, C., & Stuart, B. (2010). An investigation of isatin as a potential reagent for latent fingermark detection on porous surfaces. Journal of Forensic Identification, 60(3), 321-335.
Chan, J ; Shimmon, R ; Spindler, Xanthe ; Maynard, Philip ; Lennard, Chris ; Roux, Claude ; Stuart, B. / An investigation of isatin as a potential reagent for latent fingermark detection on porous surfaces. In: Journal of Forensic Identification. 2010 ; Vol. 60, No. 3. pp. 321-335.
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abstract = "A number of parameters were investigated, including concentration, solvent system, pH of the solution, and optimization of the development conditions. It was determined that isatin at a concentration of 0.05 percent (w/v) provided the optimum balance between the luminescence of the fingermark ridges and background. A carrier solvent of dioxane mixed with acetone [12.5 percent (v/v)] produced the most intense luminescence. It was determined that the optimum pH for the development of fingermarks was 5.0 and that this could be reached by the addition of 4 percent (v/v) sodium carbonate buffer. The use of a dry heat press at 180 degrees C for 10 s provided optimal development conditions. The possible enhancement of isatin-treated fingermark impressions using metal salts was investigated and it was determined that secondary treatment with an ethanolic zinc chloride solution provided enhanced luminescence emission. However, little color change to the developed fingermarks was observed. A comparison of isatin with 1,2-indanedione-zinc (IND-Zn) and DFO demonstrated that the latter two reagents provided greater sensitivity and luminescence than isatin despite the fact that isatin generated strong room-temperature luminescence",
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Chan, J, Shimmon, R, Spindler, X, Maynard, P, Lennard, C, Roux, C & Stuart, B 2010, 'An investigation of isatin as a potential reagent for latent fingermark detection on porous surfaces', Journal of Forensic Identification, vol. 60, no. 3, pp. 321-335.

An investigation of isatin as a potential reagent for latent fingermark detection on porous surfaces. / Chan, J; Shimmon, R; Spindler, Xanthe; Maynard, Philip; Lennard, Chris; Roux, Claude; Stuart, B.

In: Journal of Forensic Identification, Vol. 60, No. 3, 2010, p. 321-335.

Research output: Contribution to journalArticle

TY - JOUR

T1 - An investigation of isatin as a potential reagent for latent fingermark detection on porous surfaces

AU - Chan, J

AU - Shimmon, R

AU - Spindler, Xanthe

AU - Maynard, Philip

AU - Lennard, Chris

AU - Roux, Claude

AU - Stuart, B

PY - 2010

Y1 - 2010

N2 - A number of parameters were investigated, including concentration, solvent system, pH of the solution, and optimization of the development conditions. It was determined that isatin at a concentration of 0.05 percent (w/v) provided the optimum balance between the luminescence of the fingermark ridges and background. A carrier solvent of dioxane mixed with acetone [12.5 percent (v/v)] produced the most intense luminescence. It was determined that the optimum pH for the development of fingermarks was 5.0 and that this could be reached by the addition of 4 percent (v/v) sodium carbonate buffer. The use of a dry heat press at 180 degrees C for 10 s provided optimal development conditions. The possible enhancement of isatin-treated fingermark impressions using metal salts was investigated and it was determined that secondary treatment with an ethanolic zinc chloride solution provided enhanced luminescence emission. However, little color change to the developed fingermarks was observed. A comparison of isatin with 1,2-indanedione-zinc (IND-Zn) and DFO demonstrated that the latter two reagents provided greater sensitivity and luminescence than isatin despite the fact that isatin generated strong room-temperature luminescence

AB - A number of parameters were investigated, including concentration, solvent system, pH of the solution, and optimization of the development conditions. It was determined that isatin at a concentration of 0.05 percent (w/v) provided the optimum balance between the luminescence of the fingermark ridges and background. A carrier solvent of dioxane mixed with acetone [12.5 percent (v/v)] produced the most intense luminescence. It was determined that the optimum pH for the development of fingermarks was 5.0 and that this could be reached by the addition of 4 percent (v/v) sodium carbonate buffer. The use of a dry heat press at 180 degrees C for 10 s provided optimal development conditions. The possible enhancement of isatin-treated fingermark impressions using metal salts was investigated and it was determined that secondary treatment with an ethanolic zinc chloride solution provided enhanced luminescence emission. However, little color change to the developed fingermarks was observed. A comparison of isatin with 1,2-indanedione-zinc (IND-Zn) and DFO demonstrated that the latter two reagents provided greater sensitivity and luminescence than isatin despite the fact that isatin generated strong room-temperature luminescence

M3 - Article

VL - 60

SP - 321

EP - 335

JO - Journal of Forensic Identification

JF - Journal of Forensic Identification

SN - 0895-173X

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Chan J, Shimmon R, Spindler X, Maynard P, Lennard C, Roux C et al. An investigation of isatin as a potential reagent for latent fingermark detection on porous surfaces. Journal of Forensic Identification. 2010;60(3):321-335.