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不管罪犯如何狡猾、诡秘,总是要遗留在现场或从现场带走微量物证。换言之,罪犯接触某一环境,而又不使其发生一点细小的变化,这是不可能的。如:某食品库内被盗现金1400多元。经现场勘查发现,房门和保险柜门锁完好,认定是使用选配钥匙作案。细致检验锁芯,在锁芯内弹子上附着有极微小的银白色物质。进一步检验认定,该细微物质是与原配铜质钥匙不同的铝质成分。因此,为侦破此案提供了重要线索和证据,及时地破了案。现场勘查人员要有高度的责任感和事业心,认真细致、一丝不苟,才能发现微量物证。微量物证源大体可作如下分类:(一)衣服:是一种理想的微量物证源。由于静电的作用,会使微量物证附着在衣服或其他织物上。如果在案发之后能尽快
Regardless of how cunning criminals, secretive, always left at the scene or away from the scene trace evidence. In other words, it is impossible for criminals to contact an environment without making minor changes. Such as: a food bank stolen cash 1400 yuan. After the site survey found that the door and safe door lock intact, that is the use of matching key crime. Detailed examination of the lock cylinder, in the lock cylinder attached to the marble is very tiny silver-white material. Further inspection found that the fine material is different from the original copper key aluminum components. Therefore, it provided important clues and evidences to crack the case and promptly broke the case. Site survey personnel should have a high degree of responsibility and dedication, careful, meticulous, in order to find traces of evidence. Trace evidence source can be roughly classified as follows: (a) clothes: is an ideal source of trace evidence. As a result of the static electricity, will make trace evidence attached to clothes or other fabrics. If as soon as possible after the incident