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一、如何发现泥土上遗留的隐蔽血痕首先要详细了解案情。通过访问及现场调查,了解受害人被发现时所处的位置,包括方向、体位及有无衬垫物品等。根据案情介绍,分析现场地面或墙壁上是否遗留有血迹及可能遗留的部位,做到心中有数。其次要仔细勘查现场。根据现场状况,结合案情介绍,确定中心现场,找出受害者当时所处的位置。结合损伤部位及损伤程度,推断出受害人当时的体位,以重点寻找可能遗留有血迹的部位,必要时可结合利用倒光进行寻找。发现可疑斑迹后,应立即保护起来,经拍照固定后提取。二、泥土上血痕的提取1.刮取法:适用于光滑、坚硬的地面或墙壁上的血痕或厚血痂。2.擦拭法:对于坚硬泥块上的血痕,取少许纱线(根据血痕量的多少而定),用生理盐水浸湿后,擦拭地面血痕,阴干待
First, how to find the hidden hidden bloodstains on the soil must first understand the details of the case. Through visits and field surveys, understand where the victim was found, including direction, body position and presence of liner items. According to the introduction of the case, analysis of the scene on the ground or walls left behind and may have left the site of blood, be aware of. Second, we must carefully survey the scene. According to the site conditions, combined with the introduction of the case, determine the scene of the center to find out where the victim was. Combined with the injury site and degree of injury, infer the victim’s position at that time, in order to focus on looking for the site may have left behind blood, if necessary, can be combined with the use of light to find. After the discovery of suspicious stains, they should be immediately protected and taken after being photographed. Second, the extraction of bloodstains on the soil 1 scraping method: apply to a smooth, hard bloodstains or thick blood scab on the ground or wall. 2. Wipe method: for hard blood clots on the bloodstains, take a little yarn (depending on the amount of bloodstains may be), soaked with saline, wipe the ground bloodstains, dry to be