title: One step to detect the latent fingermarks with gold nanoparticles.
abstract: A simple and environment friendly chemical route for detecting latent fingermarks by one-step single-metal nanoparticles deposition method (SND) was achieved successfully on several non-porous items. Gold nanoparticles (AuNPs) synthesized using sodium borohydride as reducing agent in the presence of glucose, were used as working solution for latent fingermarks detection. The SND technique just needs one step to obtain clear ridge details in a wide pH range (2.5-5.0), whereas the standard multi-metal deposition (MMD) technique requires six baths in a narrow pH range (2.5-2.8). The SND is very convenient to detect latent fingermarks in forensic scene or laboratory for forensic operators. The SND technique provided sharp and clear development of latent fingermarks, without background staining, dramatically diminished the bath steps.
authors.affiliation: State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry and Graduate University of the Chinese Academy of Sciences, Chinese Academy of Sciences, Changchun, PR China.
authors.forename: Dongmei
authors.initials: D
authors.lastname: Gao
authors.forename: Fei
authors.initials: F
authors.lastname: Li
authors.forename: Jixia
authors.initials: J
authors.lastname: Song
authors.forename: Xiaoyu
authors.initials: X
authors.lastname: Xu
authors.forename: Qixian
authors.initials: Q
authors.lastname: Zhang
authors.forename: Li
authors.initials: L
authors.lastname: Niu
mesh_terms: D001894:Borohydrides / Q000737:chemistry; D003878:Dermatoglyphics; D005554:Forensic Medicine / Q000379:methods; D005947:Glucose / Q000737:chemistry; D006046:Gold / Q000737:chemistry*; D006801:Humans; D006863:Hydrogen-Ion Concentration; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D008854:Microscopy, Electron; D010084:Oxidation-Reduction
chemical_list: D001894:Borohydrides; D006046:Gold; C025364:sodium borohydride; D005947:Glucose