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从小颗粒悬浮液显现汗潜手印的基本原理出发,论述了小颗粒悬浮液显现潮湿客体表面上的汗潜手印的可能性、小颗粒和表面活性剂间相互作用方式,及手印显现操作规则。以增加小颗粒种类及适用客体范围为目的,通过大量实验对多种小颗粒进行筛选,从中选出显现效果相对较好的配方,继南通过一定浓度测定实验,得出了对各类客体表面上汗潜手印进行显现所需小颗粒悬浮液的最佳浓度,而后又在选定的悬浮液的基础上加入适当的表面活性剂来增强显现效果,缩短显现时间。经实验研究表明,该方法不仅适用于干燥客体上的汗潜手印,还可以应用于常规方法无法奏效的某些潮湿、水浸的客体上的汗潜手印。
Starting from the basic principle of developing small sweat latent fingerprints in small particle suspension, the paper discusses the possibility of small particle suspensions exhibiting sweat latent fingerprints on the surface of wet objects, the interaction between small particles and surfactants and the operating rules of fingerprinting. In order to increase the types of small particles and the range of applicable objects, through a large number of experiments to filter a variety of small particles, from which to select the formulation of a relatively good effect, following the South through a certain concentration determination experiment, Sweat latent fingerprints to show the desired concentration of small particle suspension, and then in the selected suspension based on the appropriate surfactant to enhance the appearance of the effect and reduce the apparent time. The experimental results show that this method is not only suitable for sweat latent fingerprints on dry objects, but also can be applied to sweaty fingerprints on some damp and water-immersed objects that conventional methods can not work.