引用本文:
邢卓, 杨瑞琴. 2-(5-溴-2吡啶偶氮)-5-二乙氨基酚显现人体皮肤表面镀锌工具遗留印迹[J]. 应用化学,
2015, 32(9): 1093-1098.
doi:
10.11944/j.issn.1000-0518.2015.09.150033
Citation: XING Zhuo, YANG Ruiqin. Chromogenic Detection of Imprints Left by Zinc Coatings on Human Skins by 2-(5-Bromo-2-pyridylazo)-5-(diethylamino) phenol[J]. Chinese Journal of Applied Chemistry, 2015, 32(9): 1093-1098. doi: 10.11944/j.issn.1000-0518.2015.09.150033
Citation: XING Zhuo, YANG Ruiqin. Chromogenic Detection of Imprints Left by Zinc Coatings on Human Skins by 2-(5-Bromo-2-pyridylazo)-5-(diethylamino) phenol[J]. Chinese Journal of Applied Chemistry, 2015, 32(9): 1093-1098. doi: 10.11944/j.issn.1000-0518.2015.09.150033
2-(5-溴-2吡啶偶氮)-5-二乙氨基酚显现人体皮肤表面镀锌工具遗留印迹
摘要:
研究2-(5-溴-2吡啶偶氮)-5-二乙氨基酚(5-Br-PADAP)试剂显现镀锌工具遗留印迹的方法。考察接触时间、时间间隔、试剂浓度、是否洗手等因素对印迹强度及分辨率的影响,并对该方法的可靠性进行验证。实验结果表明,试剂浓度1 g/L、接触时间10 s以上,间隔时间不超过4 h条件下,均能显出较好的印迹。该方法可以灵敏地显现镀锌工具遗留印迹,对非铁金属工具遗留印迹检测进行了很好地补充。
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关键词:
- 法庭科学
- / (溴-吡啶偶氮)-二乙氨基酚
- / 镀锌工具遗留印迹
- / 显现
English
Chromogenic Detection of Imprints Left by Zinc Coatings on Human Skins by 2-(5-Bromo-2-pyridylazo)-5-(diethylamino) phenol
Abstract:
The detection of imprint left by zinc coatings on human skins was studied.The affecting factors such as contact time,time elapse from the contact to the reaction,concentration of 2-(5-bromo-2-pyridylazo)-5-(diethylamino) phenol (5-Br-PADAP) reagent and washing on the intensity and resolution of imprints were studied and the reliability of this method was verified.As shown in experimental results,good imprints can be obtained with a concentration of 1 g/L of 5-Br-PADAP,contact time of 10 s,time elapse of less than 4 h.This method can develop imprints left by zinc coatings sensitively as a good supplement for the detection of imprints left by nonferrous metal tools.
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