我们曾遇到两例遗留在弧形镀铬把手上约2～3个月的陈旧汗液指印。由于承受客体形态特殊,指印遗留时间较长,采用直接配光拍照、“502”熏显、粉末显现、光致荧光等方法,很难取得清晰的拍照效果。为了解决这一问题,经过反复试验,采用8-羟基喹啉-“502”熏显、紫外荧光拍照 We have encountered two cases of obsolete sweat fingerprints left on the arc chrome handle for about 2 to 3 months. Due to the special object to bear the object, fingerprinting a long time, the use of direct light distribution photos, “502” smoked significant, powder, fluorescence and other methods, it is difficult to obtain a clear photo effect. In order to solve this problem, after repeated experiments, using 8-hydroxyquinoline - “502” smoked significantly, UV fluorescence photographs