Broncová Gabriela, Slaninová Tereza, Trchová Miroslava, Prokopec Vadim, Matějka Pavel, Shishkanova Tatiana V
Department of Analytical Chemistry, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague 6, Czech Republic.
Central Laboratory, University of Chemistry and Technology in Prague, Technická 5, 166 28 Prague 6, Czech Republic.
Polymers (Basel). 2021 Sep 23;13(19):3220. doi: 10.3390/polym13193220.
This study is focused on the visualization of latent fingerprints on brass surfaces using the method of electrochemical deposition of a polymer film based on poly(neutral red) (PNR). The experiment included (i) optimization of conditions of electrochemical deposition of PNR on brass surfaces, (ii) ATR-FTIR spectroscopic characterization of PNR-modified substrates, and (iii) identification of characteristic details on visualized fingerprints on fired brass cartridges. For electrochemical visualization, it is necessary to keep in mind both kind and "story" substrates. Experimental findings showed that electrochemical visualization carried out on brass plates is a step forward before known findings described in the literature and gives simultaneously a new approach for criminalists in the fight against crime.
本研究聚焦于使用基于聚（中性红）（PNR）的聚合物膜电化学沉积方法，对黄铜表面的潜在指纹进行可视化处理。实验包括：（i）优化PNR在黄铜表面的电化学沉积条件；（ii）对PNR修饰的基底进行衰减全反射傅里叶变换红外光谱（ATR-FTIR）表征；以及（iii）识别已发射黄铜弹壳上可视化指纹的特征细节。对于电化学可视化，必须同时考虑基底的种类和“情况”。实验结果表明，在黄铜板上进行的电化学可视化比文献中描述的已知结果更进了一步，同时为刑事专家打击犯罪提供了一种新方法。
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