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Evaluation of the performance of IND/Zn and DFO on various porous substrates in Singapore context

Forensic science international, 2020-10, Vol.315, p.110440-110440, Article 110440 [Peer Reviewed Journal]

2020 The Authors ;Copyright © 2020 The Authors. Published by Elsevier B.V. All rights reserved. ;2020. The Authors ;ISSN: 0379-0738 ;EISSN: 1872-6283 ;DOI: 10.1016/j.forsciint.2020.110440 ;PMID: 32858462

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Title:
Evaluation of the performance of IND/Zn and DFO on various porous substrates in Singapore context
Author: Loh, Cheng Ngee ; Chia, Wei Lin Kimiie ; Foo, Siong Chun Shawn ; Xu, Xiuhui ; Tan, Wei Ling Stella
Subjects: 1,2-Indanedione ; 1,8-Diazafluoren-9-one ; Adult ; Aging ; Aza Compounds ; Cardboard ; Crime ; Dermatoglyphics ; Envelopes ; Female ; Fingerprints ; Forensic science ; Forensic sciences ; Humans ; Humidity ; Indans ; Latent fingerprint development ; Male ; Murders & murder attempts ; Ninhydrin ; Outdoors ; Performance evaluation ; Porosity ; Quality ; Singapore ; Singapore context ; Substrates ; Surface Properties ; Time Factors ; Young Adult ; Zinc
Is Part Of: Forensic science international, 2020-10, Vol.315, p.110440-110440, Article 110440
Description: •IND/Zn outperforms DFO in a tropical climate with high temperature and humidity.•IND/Zn consistently outperforms DFO on fingermarks aged up to 3 months.•IND/Zn performs better than DFO on a range of substrates, including joss paper.•IND/Zn appears to be more sensitive than DFO. Enhancement of latent fingermarks found at crime scenes can be crucial to criminal investigations. The performance of ninhydrin analogues 1,2-indanedione (IND/Zn) and 1,8-diazafluoren-9-one (DFO) used in laboratories for the enhancement of latent fingermarks on porous substrates were compared for operational use. The visualisation of enhanced latent fingermarks on seven substrates commonly encountered in local crimes - plain A4 paper, glossy magazine, paper magazine, brown envelopes, white envelopes, cardboard, and joss paper were assessed using fingermarks deposits from seven donors. Fingermarks were aged under both indoor and outdoor conditions as well as over different periods of time. Our results show that IND/Zn consistently produced fingermarks of superior quality and contrast to DFO across the different donors, substrates and time periods. IND/Zn also appears to be more sensitive compared to DFO.
Publisher: Ireland: Elsevier B.V
Language: English
Identifier: ISSN: 0379-0738
EISSN: 1872-6283
DOI: 10.1016/j.forsciint.2020.110440
PMID: 32858462
Source: MEDLINE
ProQuest Central

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Evaluation of the performance of IND/Zn and DFO on various porous substrates in Singapore context

2020 The Authors ;Copyright © 2020 The Authors. Published by Elsevier B.V. All rights reserved. ;2020. The Authors ;ISSN: 0379-0738 ;EISSN: 1872-6283 ;DOI: 10.1016/j.forsciint.2020.110440 ;PMID: 32858462

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