Development of Carbon Powder from Burnt Coconut Husk for Latent Fingerprint Detection
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Abstract
Latent fingerprint detection is an essential process for evidence collection linked to the incident in forensic science. The carbon powder used in fingerprint detection is generally an imported product. In this research, the study of powder from burnt coconut husk for latent fingerprint detection was developed. The coconut husk used in this study was burnt into powder & analyzed by the scanning electron microscope with energy dispersive X-ray spectroscopy. Latent fingerprint detection on non-porous & semi-porous surfaces by the developed coconut husk powder was performed. The results showed that the powder from burnt coconut husk had an average size of 20.3 ± 2.5 micrometers under angular sheet with non-symmetric shape. The powders were applied to detect latent fingerprints imprinted on 4 types of surfaces & analyzed by the Mini Automated Fingerprint Identification System (Mini AFIS). It was found that the burnt coconut husk powder provided up to 60 points of minutiae whereas latent fingerprint quality was qualified to the criteria for fingerprint examination on all sample surfaces. Statistical analysis demonstrated that the minutiae & latent fingerprint quality collected from burnt coconut husk powder were not different from using imported powder at the significance level of 0.05. In conclusion, the developed powder from burnt coconut husk can be used as an alternative tool for latent fingerprint detection in forensic examination with advantages of easy preparation, low cost, & environmentally friendly material.
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References
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