不同方法显现热敏纸上潜在手印的效果比较

采用传统的粉末法、碘熏法、硝酸银法、茚三酮法对热敏纸上的潜在汗液手印进行了显现并对显现结果进行了比较与分析.实验结果表明:物理方法(粉末法、碘熏法)能够对热敏纸上新鲜的潜在汗液手印有较好的显现效果;化学显现方法(硝酸银法、茚三酮法显现)对热敏纸上新鲜的或是陈旧的潜在汗液手印都有较好的显现效果,但在一定程度上会破坏客体上的原有文件内容,经对化学试剂进行改良,以蒸馏水作为溶剂,经过改良的硝酸银和茚三酮的水溶液能够有效地显现热敏纸上潜在的汗液手印,并且这两种溶液的混合液显现效果更好,显现出的纹线具有很高的鉴定价值.

The Effect of Comparison with Different Methods of Thermal Papers on Potential Handprint Appeared

Based on the traditional powder,iodine smoked,silver nitrate method,the method of thermal ferrocenylmethyl-substituted indenes three papers print on the potential sweat to appear and appeared to compare and analyze the results.Experimental results show that the physical methods（powder,iodine smoked method） for thermal paper fresh potential sweat handprint have better effect appeared,Chemical method（appeared nitric acid silver,three FaXian ketone ferrocenylmethyl-substituted indenes of thermal papers are） fresh or old potential sweat fingerprints are better effect,but appeared in a certain extent on the original document object destruction of chemical reagents,modified with distilled water and used as a solvent,modified nitric acid silver and three ketone of aqueous ferrocenylmethyl-substituted indenes effectively on the potential appeared thermal papers print,and it touches the mixture solution appeared effect is better,the lines of high appraisal value.