对于胶水指纹的检验,要使胶水指纹呈稳定状态才能进行拍照或着色。采取自然风干法可以使胶水指纹呈稳定状态,但在阴雨天气情况下胶水不容易干燥,而且指纹容易遭到雨水的破坏。尝试通过化学方法使胶水产生沉淀,利用强酸弱碱盐使胶水析出沉淀物质,从而可以进行后期处理。得出利用硫酸铜水溶液处理胶水指纹提取成功率高、受客体影响小等优点的结论。 For the glue fingerprinting test, to make the glue fingerprints stable in order to take pictures or coloring. Natural air-drying method can make the glue fingerprints was steady, but in case of rainy weather glue is not easy to dry, and fingerprints vulnerable to rain damage. Attempts to chemically precipitate the glue and use strong acid and weak base salts to precipitate the precipitated material from the glue so that post-processing can be performed. Draw the conclusion that using copper sulfate aqueous solution to treat fingerprints of fingerprints has high success rate and is less influenced by the guest.