Analytical Science and Technology (분석과학)

The Korean Society of Analytical Sciences (한국분석과학회)
권호 표지
DOI QR코드

DOI QR Code

The shelf life of 1,2-indandione/zinc and polyvinylpyrrolidone solutions used to develop latent fingermarks deposited on the surface of thermal paper

감열지에 부착된 잠재지문을 현출하는데 사용하는 1,2-indandione/zinc와 polyvinylpyrrolidone 용액의 보존기한

  • Hong, Sungwook (Graduate School of Forensic Science Soonchunhyang University) ;
  • Kim, Yujin (Graduate School of Forensic Science Soonchunhyang University) ;
  • Kim, Hyunjung (Graduate School of Forensic Science Soonchunhyang University) ;
  • Kim, Hyerim (Graduate School of Forensic Science Soonchunhyang University) ;
  • Lee, Junchul (Graduate School of Forensic Science Soonchunhyang University) ;
  • Yu, Seoungho (Graduate School of Forensic Science Soonchunhyang University)
  • 홍성욱 (순천향대학교 법과학대학원) ;
  • 김유진 (순천향대학교 법과학대학원) ;
  • 김현정 (순천향대학교 법과학대학원) ;
  • 김혜림 (순천향대학교 법과학대학원) ;
  • 이준철 (순천향대학교 법과학대학원) ;
  • 유승호 (순천향대학교 법과학대학원)
  • Received : 2017.08.31
  • Accepted : 2017.11.01
  • Published : 2017.12.25
Download PDF
⟨ Previous Next ⟩

Abstract

The shelf life of 1,2-indandione/zinc (1,2-IND/Zn) solution and polyvinylpyrrolidone (PVP) solution, which are known as reagents for developing latent fingermarks deposited on the surface of thermal paper, was studied. The standard latent fingermarks used for comparisons were artificial latent fingermarks printed on thermally sensitive and non-sensitive surfaces with the same intensity. Upon treatment of standard latent fingermarks with the pre-mixed 1,2-IND/Zn and PVP solutions, the fingermarks could be successfully developed until 3 days after the preparation of the mixture. However, from the third day after mixing the reagents, blackening was observed on the surface of the thermal paper, indicating deterioration of the reagent performance. The 1,2-IND/Zn and PVP solutions separately stored without mixing in advance were mixed immediately before use, and the development efficiency of the latent fingermarks deposited on the surface of thermal paper was observed. The performance of the PVP solution decreased after 20 days from the preparation of the reagent. It was also found that the shelf life of 1,2-IND/Zn and PVP mixture was determined by the PVP solution. The effect of oxygen and moisture on the degradation of PVP was investigated. It was found that the performance of the PVP solution deteriorated because of the influence of moisture, though it was not affected by oxygen.

감열지에 부착된 잠재지문을 현출하는 시약으로 알려진 1,2-indandione/zinc (1,2-IND/Zn) 용액과 polyvinylpyrrolidone (PVP) 용액의 보존기한을 연구하였다. 감열지의 감열면과 비감열면에 출력세기가 동일한 인공잠재지문을 인쇄하여 이를 표준지문으로 사용하였다. 미리 혼합한 1,2-IND/Zn과 PVP 용액으로 표준지문을 처리한 결과, 혼합시약 제조 후 3 일까지는 감열지에 부착된 지문을 성공적으로 현출할 수 있었으나 3 일이 경과하면 감열지 표면에서 흑화현상이 나타나 시약의 성능이 저하되었다는 것을 알 수 있었다. 미리 혼합하지 않고 별도로 보관한 1,2-IND/Zn 및 PVP 용액을 사용직전에 혼합하여 표준지문에 부착된 잠재지문을 현출한 결과, 시약 제조 후 20 일이 경과하면 시약의 성능이 저하되는 것을 알 수 있었다. 또한, 1,2-indandione/zinc 용액과 polyvinylpyrrolidone 혼합용액의 보존기한은 polyvinylpyrrolidone 용액에 의해 결정된다는 것을 알 수 있었다. 산소와 수분 중 어느 것이 PVP의 성능저하에 영향을 미치는지 조사한 결과, 산소의 영향은 받지 않으나 수분의 영향을 받아서 시약의 성능이 저하된다는 것을 알 수 있었다.

Keywords

References

  1. NCR, Swiss Patent, 406, 257 (1969).
  2. O. P. Jasuja and G. Singh, Forensic Sci. Int., 192, 11-16 (2009). https://doi.org/10.1016/j.forsciint.2009.08.005
  3. S. Bleay, V. G. Sears, H. Bandey, A. Gibson, V. Bowman, R. Downham and C. Selway, "Fingerprint Source Book", Home Office, UK, 2012.
  4. R. Muthyala, "Chemistry and Application of Leuco Dyes", Kluwer Academic Publishers, New York, 2002.
  5. L. Schwarz, Kriminalistik, 57, 246-249 (2003).
  6. L. Schwarz and I. Klenke, J. Forensic Sci., 52(3) (2007).
  7. T. Fitzi, R. Fisher, S. Moret and A. Becue, J. Forensic Ident., 64, 329-350 (2014).
  8. Y. S. Ok, G. Y. Ko, S. M. Jeong and J. S. Yu, Korean Police Studies Review, 13(2), 171-188 (2014).
  9. M. Stoilovic and C. Lennard, "Fingermark Detection & Enhancement", 4th Ed., National Centre for Forensic Studies, Canberra, 2010.
  10. J. Brennan, S. Bramble, S. Crabtree and G. Wright, J. Forensic Ident., 45, 373-380 (1995).
  11. R. Ramotowski, "Lee and Gaensslen"s Advances in Fingerprint Technology', 3rd Ed. CRC Press, 2012.
  12. Home Office, "Fingermark Visualization Manual", 1st ed., Home Office CAST, Sandridge, UK, January, 2014.
  13. J. L. Lee, S. M. Bleay, V. G. Sears, S. Mehmet and R. Croxton, J Forensic Ident., 59(5), 545-568 (2009).
  14. J. S. Yu, A. R. Kim and S. Lim, Korean Police Studies Review, 11(3), 171-184 (2012).
  15. L. Schwarz, P. Nat and I. Klenke, J. Forensic Sci., 55, 1076-1079 (2010). https://doi.org/10.1111/j.1556-4029.2010.01383.x
  16. Y. P. Luo, Y. B. Zhao and S. Liu, Forensic Sci. Int., 229, 75-79 (2013). https://doi.org/10.1016/j.forsciint.2013.03.045
  17. S. W. Hong, M. S. Kim, S. H. Yu, J. Forensic Sci., first published: 26 June 2017, doi: 10.1111/1556-4029.13585.
  18. V. D'Elia, S. Materazzi, G. Iuliano and L. Niola, Forensic Sci. Int., 254, 205-214 (2015). https://doi.org/10.1016/j.forsciint.2015.07.036
  19. S. W. Hong, I. G. Hong, A. l. Han, J. Y. Seo and J. Y. Namgung, Forensic Sci. Int., 257, 403-408 (2015). https://doi.org/10.1016/j.forsciint.2015.10.005
  20. V. G. Sears, S. M. Bleay, H. L. Bandey and V. J. Bowman, Sci. Justice., 52, 145-160 (2012). https://doi.org/10.1016/j.scijus.2011.10.006
  21. O. P. Jasuja, M. A. Toofany, G. Singh and G. S. Sodhi, Sci. Justice., 49, 8-11 (2009). https://doi.org/10.1016/j.scijus.2008.08.001
  22. J. Moore, S. Bleay, J. Deans and N. NicDaeid, J. Forensic Ident., 58(1), 83-108 (2008).
  23. S. Hong and J. Y. Seo, Forensic Sci. Int., 257, 379-384 (2015). https://doi.org/10.1016/j.forsciint.2015.10.011
  24. http://www.chemicalbook.com/ChemicalProductProperty_EN_CB4209342.htm, Assessed 26 Nov 2017.
  25. http://www.sciencelab.com/msds.php?msdsId=9926650, Assessed 17 may 2017.