茚三酮显现纸张汗潜手印新方法

A New Method for Developing Latent Paper Sweat Fingermarks with Ninhydrin

针对牛皮纸、广告纸和打印纸三种承痕客体的汗潜手印,使用茚三酮夹片显现法与茚三酮熏显柜显现法进行显现,实验数据显示:从颜色反应、背景干扰、文件污损、纹线清晰连贯、细节特征稳定、客体渗透性、手印遗留时间等方面进行比较,发现茚三酮夹片显现法优于茚三酮熏显柜显现法。

The latent sweat fingerprints of kraft paper,advertising paper and printing paper were developed by the ninhydrin sandwich tablet development method and the ninhydrin fumigating cabinet development method.It is found from the experimental data that the former method is superior to the latter one with comparisons of the color response,background interference,document fouling,clear and coherent lines,stable detail features,object permeability,fingerprint left time and so on.