PVC管上几种指纹拍摄技巧的优劣比较

The comparison of advantages and disadvantages of a few fingerprints shooting techniques on PVC pipe

近年来,一些案件现场在PVC管上留有犯罪嫌疑人的手印痕迹,如能得到较好提取,则对案件的侦破将会提供有力的线索和证据作用。通常PVC管上的汗液和加层或减层的油、血指纹或油灰混合物上的指纹拍摄方法不尽相同,对其分析研究,可为今后提取PVC管上的手印痕迹提供可行性帮助。

In recent years, fingerprints left by the suspect on the PVC pipe can be found in some case scene. If they can be better extracted, they will provide useful clues and strong evidence for the investigation. The shooting techniques of sweat fingerprints, layer by layer oil or blood fingerprints and fingerprints on putty mixture are different, so the study on them can provide helping hands for the extraction of fingerprint marks on PVC pipe in the future.