Paterson Emma, Bond John W, Hillman A Robert
Department of Chemistry, University of Leicester, Leicester LE1 7RH, UK.
J Forensic Sci. 2010 Jan;55(1):221-4. doi: 10.1111/j.1556-4029.2009.01219.x. Epub 2009 Nov 30.
Effective removal of fingerprint deposits is crucial for experimentation related to the corrosion of metals by fingerprint deposits. Such removal is also necessary prior to deposition of test fingerprints. The effectiveness of four regimes in removing fingerprint deposits from brass is considered. Sustained wiping of the deposit with a tissue at applied pressures of up to c. 1430 Pa or rubbing while the brass was immersed in acetone both failed to remove completely all traces of fingerprint deposits. Heating the brass to 600 degrees C was an effective remover; however, this also oxidized the surface of the metal except where inhibited by fingerprint deposits. The most effective regime, and the only one of the four that removed all traces of deposit without affecting the properties of the metal surface, was immersion in warm soapy water while rubbing with a tissue. We propose this as the preferred method for fingerprint removal.
有效去除指纹沉积物对于与指纹沉积物对金属腐蚀相关的实验至关重要。在沉积测试指纹之前，这种去除也是必要的。本文考虑了四种方法从黄铜上去除指纹沉积物的效果。用纸巾在高达约1430帕的施加压力下持续擦拭沉积物，或者在黄铜浸入丙酮时进行擦拭，均未能完全去除所有指纹沉积物痕迹。将黄铜加热到600摄氏度是一种有效的去除方法；然而，这也会使金属表面氧化，除非有指纹沉积物抑制。最有效的方法，也是四种方法中唯一一种能去除所有沉积物痕迹而不影响金属表面性能的方法，是将其浸入温肥皂水中并用纸巾擦拭。我们建议将此作为去除指纹的首选方法。
