Quantifying the Effect of Seasonal Variations on the Latent Fingerprint Residues Through Photoluminescence Spectroscopy

Authors

  • Kiruthiga U National Forensic Sciences University
  • Govindarajalu Rajesh Babu Associate Professor, National Forensic Sciences University

DOI:

https://doi.org/10.12723/mjs.69.8

Keywords:

Dactylography, Photoluminescence Spectrometry, Spectrofluorimetry, Latent Fingerprints, Fingerprints, Seasonal Changes

Abstract

Perspiration fluctuates with the season. Body mass, humidity, temperature, and other factors affect perspiration. Due to higher temperatures, warmer seasons produce more perspiration in the individuals which is the opposite with colder seasons. Seasonal perspiration regulates body temperature in different climates. Due to seasonal and environmental factors, fingerprint residues are subject to variations. Photoluminescence and UV-VIS spectroscopy were used to evaluate fingerprint residues and their response with respect to seasonal variations. To test the hypothesis, 1600 latent fingerprint residues were collected under various conditions spanning the summer and winter seasons cycle for a year. The collected samples were subjected to ultraviolet (UV) light from 200nm to 1600nm to examine their absorption spectra. Further, their fluorescence intensities were measured using photoluminescence spectroscopy. The research's positive outcomes demonstrate that photoluminescence spectroscopy may accurately detect seasonal resonances on latent fingerprint residues, which can be termed seasonal markers.

References

N. Umemiya, “Seasonal variations of physiological characteristics and thermal sensation under identical thermal conditions,” Journal of Physiological Anthropology, 25(1), 29-39. https://doi.org/10.2114/jpa2.25.29. 2006.

H. Yoshimura. “Seasonal changes in human body fluids,” The Japanese Journal of Physiology, 8, 165-179. https://doi.org/10.2170/jjphysiol.8.165, 1958.

Y. Taniguchi, J. Sugenoya, N. Nishimura, S. Iwase, T. Matsumoto, Y. Shimizu, & M. Sato, “Contribution of central versus sweat gland mechanisms to the seasonal change of sweating function in young sedentary males and females,” International journal of biometeorology, 55(2), 203-212. https://doi.org/10.1007/s00484-010-0325-1, 2011.

F. G. Benedict, & T. H. F, Roo, “Insensible perspiration: Its relation to human physiology and pathology,” Archives of Internal Medicine, 38(1), 1-35. doi:10.1001/archinte.1926.00120250006001, 1926.

M. TORII, M. YAMASAKI, & T. SASAKI, “Seasonal variation of sweating rate caused by exercise during thermal transient,” Journal of human ergology, 14(1), 53-56. https://doi.org/10.11183/jhe1972.14.53, 1985.

Additional Files

Published

2024-07-15