摘要
基于激光检验照相及控制变量法,对茚二酮显现配方进行优化,研究添加冰醋酸、氯盐对指印显现效果的影响。结果表明,最优配方为:0.25 g茚二酮、225 mL乙酸乙酯、225 mL石油醚、25 mL冰醋酸、25 mL储存液(0.2 g氯化锌、30 mL乙醇),且适用于国内的气候环境,对渗透性客体表面新鲜及20 d以内较陈旧指印均具有较好的显现效果,指印荧光显著增强,实现对渗透性客体上汗潜指印的比色与荧光双模式显现,但应注意渗透性客体特性、冰醋酸用量及氯盐种类。
Based on laser inspection photography and control variable method,the development formula of indandione was systematically studied,the formulations were optimised,the influence of adding glacial acetic acid and chlorine salt to the formula on the development effect of fingermarks was further studied.The results showed that the optimal formula was formula:0.25 g indandione,225 mL ethyl acetate,225 mL petroleum ether,25 mL ice acetic acid,25 mL storage solution(0.2 g zinc chloride,30 mL ethanol),and suitable for domestic climate environment,which had a good effect on the porous objects of fresh and within 20 d of the aged left fingermarks;fingermark fluorescence was significantly enhanced.The experimental results provide a method to follow for optimizing the formulation of indandione fingerprint development,realizing the colorimetric and fluorescence dual-mode development of sweat latent fingermarks on porous objects.But attention should be paid to the characteristics of the porous object and the control of the amount of glacial acetic acid and the type of chlorine salt.
作者
梁帅
高树辉
邓人彬
LIANG Shuai;GAO Shuhui;DENG Renbin(School of Investigation,People’s Public Security University of China,Beijing 100038,China;Tianjin Public Security Profession College,Tianjin 300000,China;Chongqing Railway Public Security Department,Chongqing 401100,China)
出处
《应用化工》
CAS
CSCD
北大核心
2024年第8期1853-1858,共6页
Applied Chemical Industry
基金
公安科技成果推广引导计划项目(2023-24)
中国人民公安大学刑事科学技术双一流创新研究专项(2023SYL06)。
关键词
茚二酮
汗潜指印
比色
荧光
优化配方
indanedione
latent sweat fingermarks
colorimetric
fluorescence
optimal formulation
