主管:中华人民共和国司法部
主办:司法鉴定科学研究院
ISSN 1671-2072  CN 31-1863/N

中国司法鉴定 ›› 2011 ›› Issue (3): 36-39.

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掺杂Cd的水溶性荧光ZnSe/MPA量子点 显现胶带手印方法

王 珂1,杨瑞琴1,夏彬彬1等   

  1. 1.中国人民公安大学 刑事科学技术系,北京 100038; 2.北京化工大学 理学院,北京 100029
  • 收稿日期:2010-09-13 出版日期:2011-05-15 发布日期:2022-07-26
  • 通讯作者: 杨瑞琴(1971——),女,教授,主要从事法庭科学研究。
  • 作者简介:王珂(1986—),女,硕士研究生,主要从事诉讼法化学研究。E-mail∶knightwk@126.com。
  • 基金资助:

    霍英东教育基金(111092)

The Development of Latent Fingerprints on Adhesive Tape by Water-soluble Fluorescent ZnSe/MPA with Cd Quantum Dots

WANG Ke1, YANG Ru-iqin1, XIA Bin-bin1, XIONG Hai2   

  1. 1. Forensic Science Department, Chinese People’s Public Security University, Beijing 100038, China; 2. Faculty of Science, Beijing University of Chemical Technology, Beijing 100029, China
  • Received:2010-09-13 Published:2011-05-15 Online:2022-07-26

摘要: 目的 探索水溶性荧光量子点溶液——掺杂镉的硒化锌(ZnxCd(1-x)Se)对胶带手印的显现方法。方法 以巯基丙酸(MPA)为修饰剂合成了掺杂Cd的水溶性荧光ZnSe/MPA量子点,利用它显现水浸胶带及粘连胶带上的油汗指印,并在365 nm下拍照成像。结果 良好的显现出水浸胶带上的指印以及粘连胶带上的指印。与常规方法相比,优势更为明显。结论 水溶性荧光量子点ZnxCd(1-x)Se溶液显出的指印纹线细腻流畅,在法庭科学领域具有很好的应用前景。

关键词: ZnxCd(1-x)Se量子点, 胶带, 水浸, 剥离, 指印, 显现

Abstract:

Objective To explore a method using water-soluble ZnxCd(1-x)Se with quantum dots as the reagent to develop latent fingerprints on adhesive tapes. Methods ZnxCd(1-x)Se were synthesized with mercaptopropionic acid (MPA) used as the modifier. The fingerprints on water immersed tape and peeled tape were developed by ZnxCd(1-x)Se, and the developed fingerprints were fixed by photographing under 365nm. Results The fingerprints on water immersed tape and peeled tape can be clearly developed into fluent images with obvious details. Conclusions Compared with traditional methods, this method is more effective for developing latent fingerprints, and has a good prospect for application in forensic science.

Key words: ZnxCd(1-x)Se, adhesive tape, water immersed, peel, fingerprint, development

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