Performance of the nanobio-based reagent for visualising wet fingerprints exposed to different levels of water salinity / Chao Wen Ting ... [et al.]

Chao, Wen Ting and Mahat, Naji Arafat and Azman, Aida Rasyidah and Muda, Nor Wajihan and Anuar, Nurazira (2021) Performance of the nanobio-based reagent for visualising wet fingerprints exposed to different levels of water salinity / Chao Wen Ting ... [et al.]. Journal of Clinical and Health Sciences, 6 (1). pp. 33-43. ISSN 0127-984X

Abstract

Introduction: Recovery of evidence such as murder weapons in waterways has been commonly reported. However, visualising latent fingerprints on the immersed substrates may prove challenging due to its obliteration by physicochemical parameters (e.g. pH, temperature, salinity) as well as the mechanical effect of water. Although the use of Small Particle Reagent (SPR) for visualising latent fingerprints on wet non-porous substrates has been suggested, it contains molybdenum and titanium that are toxic, and their utilisation must be reduced. Furthermore, no study verifies the chemical and/or physical interaction between SPR and the lipid constituents of wet latent fingerprints that leads to the visualisation of ridge details.
Methods: The SPR and newly developed nanobio based reagent (NBR) i.e. Candida rugosa lipase-multiwalled carbon nanotubes (CRL-MWCNTs) were used for visualising latent fingerprints on glass slides immersed in water with salinity levels representing those of estuary and swimming pool for up to 15 days.
Results: It was observed that the quality of the visualised fingerprints using NBR was comparable with that of SPR. Characterisations via instrument and bioinformatics analyses have also verified the incorporation of CRL onto MWCNTs and the chemical interaction between NBR and lipid constituents of wet latent fingerprints.
Conclusions: Therefore, the newly developed NBR may prove a promising relatively greener alternative for substituting SPR for visualising latent fingerprints on glass slides immersed in different levels of water salinity.

Metadata

Item Type: Article
Creators:
Creators
Email / ID Num.
Chao, Wen Ting
UNSPECIFIED
Mahat, Naji Arafat
naji.arafat@utm.my
Azman, Aida Rasyidah
aidarasyidah@rocketmail.com
Muda, Nor Wajihan
UNSPECIFIED
Anuar, Nurazira
UNSPECIFIED
Subjects: H Social Sciences > HV Social pathology. Social and public welfare. Criminology > Criminal justice administration > Police. Detectives. Constabulary > Police duty. Methods of protection > Investigation of crimes. Examination and identification of prisoners
Q Science > QP Physiology > Animal biochemistry > Lipase
R Medicine > RA Public aspects of medicine > Forensic Medicine. Medical jurisprudence. Legal medicine
Divisions: Universiti Teknologi MARA, Selangor > Sungai Buloh Campus > Faculty of Medicine
Journal or Publication Title: Journal of Clinical and Health Sciences
UiTM Journal Collections: UiTM Journal > Journal of Clinical and Health Sciences (JCHS)
ISSN: 0127-984X
Volume: 6
Number: 1
Page Range: pp. 33-43
Keywords: Nanobio-based reagent, Candida rugosa lipase, wet latent fingerprints, saline water, forensic science
Date: June 2021
URI: https://ir.uitm.edu.my/id/eprint/69675
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