ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Poly(neutral red) modified metal substrates for fingerprint visualization

Gabriela Broncová, Tereza Slaninová, and Marcela Dendisová

Department of Analytical Chemistry, University of Chemistry and Technology Prague, Prague 6, Czech Republic

E-mail: Gabriela.Broncova@vscht.cz

Received: 22 January 2021  Accepted: 16 July 2021

Abstract:

This work is focused on a simple method for fingerprint visualization on problematic metal substrates for criminology by the application of a non-traditional polymer prepared from neutral red using cyclic voltammetry (CV). Experiments have shown that, under optimal electrochemical conditions, a latent fingerprint on a Pt and brass substrates can be quickly made significantly more visible. Using poly(neutral red), which has not been yet studied in this area, it was even possible to observe details of the secondary (bifurcation) and tertiary (pores) levels of the fingerprint papillary lines using optical microscopy.

Keywords: Cyclic voltammetry; Poly(neutral red); Fingerprint visualization; Papillary line

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-021-01794-6

Chemical Papers 75 (12) 6673–6676 (2021)