Acta Chimica Sinica ›› 2010, Vol. 68 ›› Issue (24): 2615-2618. Previous Articles     Next Articles

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金纳米粒子用于一步显现不同客体表面上的潜指纹

高东梅,宋继霞,许晓宇,韩冬雪*,牛利   

  1. (中国科学院长春应用化学研究所电分析化学国家重点实验室 中国科学院研究生院 长春 130022)
  • 投稿日期:2010-02-11 修回日期:2010-07-23 发布日期:2010-08-27
  • 通讯作者: 韩冬雪 E-mail:dxhan@ciac.jl.cn
  • 基金资助:

    基于纳米晶潜在生物印迹显现材料的研发;基于硝基敏感荧光聚合物的爆炸物探测仪器研制;天津市科委科技计划项目

Application of Gold Nanoparticles for Enhancement of Latent Fingerprints on Various Substrates in One Step

GAO Dong-Mei, SONG Ji-Xia, XU Xiao-Yu, HAN Dong-Xue, NIU Li   

  1. (State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, and Graduate University of the Chinese Academy of Sciences, Changchun 130022)
  • Received:2010-02-11 Revised:2010-07-23 Published:2010-08-27
  • Contact: Dongxue Han E-mail:dxhan@ciac.jl.cn

Gold nanoparticles prepared from reduction of gold chloride by sodium borohydride at room temperature without adding stabilizing agents were applied directly for the development of latent fingerprints on various substrates. The negatively charged gold nanoparticles can be adsorbed on the protonated residual of the ridges through electrostatic force. Consequently, the fingerprints can be visualized. In addition, influences of pH value of the solutions were investigated. Latent fingerprints could be visualized in a wide range of pH value (2.0~4.9) on non-porous and semi-porous substrates, especially, superior results were shown at pH=3.0.

Key words: latent fingerprints, gold nanoparticles, sodium borohydride