光谱学与光谱分析 |
|
|
|
|
|
Authentication of Age of Bloodstains Using UV Visible Reflection Spectrum |
GAO Qian-yu, GAO Shi-ming* |
Department of Optical Engineering, Zhejiang University, Hangzhou 310027, China |
|
|
Abstract The age of bloodstains is tightly related to the time elapsed since the crime was committed. The inference of the time that the crime was committed is of great significance to solve the case, and it was also a difficult problem in judicial authentication. Therefore, establishing a method of rapid determination of bleeding time is very necessary. Using a UV-visible spectrometer with a reflection accessory called ISR-240A and whiteboard as a reference standard, the reflection spectra of blood gauze, aluminum, glass and plastic were measured every hour under the condition of 16 ℃ and 70% humidity within 8 hours. Using SPSS to process the data, R541/R577 was figured out and linear fitting was completed. The same method was carried on on the gauze of blood at 24 ℃. The results showed that, within 8 hours, spectral reflectance values of blood at 541 and 577 nm increased gradually with the passage of injury time. In addition to the R2 of the glass with blood is 0.769, the rest of the R2 were greater than 0.900. The values of F were greater than F0.05(1,6)=5.59. Therefore, the linear regression model is significant meaningful. The method of using a UV-Visible spectrometer without doing any operations of the test samples is simple. Moreover, it does no harm to the further inspection in aspects of personal information, which is suitable for the judicial practice.
|
Received: 2014-10-24
Accepted: 2015-02-04
|
|
Corresponding Authors:
GAO Shi-ming
E-mail: gaosm@zju.edu.cn
|
|
[1] ZHAI Yong-qiang, MU Jia-ping, PENG Xue-mei(瞿勇强,牟嘉萍,彭雪梅). Journal of Kunming Medical University(昆明医学院学报), 1997, 1: 17. [2] ZHENG Ji-long, LI Xiao-na, ZHANG Xiao-dong, et al(郑吉龙,李晓娜,张晓东,等). Chinese Journal of Forensic Medicine(中国法医学杂志), 2007, 22(3): 166. [3] Andrasko J. Forensic Sci., 1997, 42(3): 601. [4] Inoue H, Takabe F, Iwasa M, et al. Forensic Sci Int., 1992,57(1): 17. [5] Arany S, Ohtani S. Forensic Sci Int., 2011, 212(1-3): e36. [6] Matsuoka T, Taguchi T, Okuda J. Biol Pharm Bull., 1995, 18(8): 1031. [7] ZHAO Ming-fu, FENG Xiao-ping, ZHANG Zheng-wei, et al(赵明富,冯小平,张政委,等). Piezoelectrics & Acoustooptics(光电与压电), 2013, 35(6): 806. [8] HUANG Ping, WANG Shi-wei, BAI Jie, et al(黄 平,王世伟,白 杰,等). Chinese Journal of Forensic Medicine(中国法医学杂志), 2011, 26(2): 104. [9] XIE Ji-yun, JIANG Zhi-liang, ZHONG Fu-xin, et al(谢济运,蒋治良,钟福新,等). Analysis and Testing Technology and Instruments(分析测试技术与仪器), 2000, 6(3): 178. [10] GUO Shi-jun,ZENG Chang-chun,LI Li-jun(郭世珺,曾常春,李丽君). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2013, 33(7):1805. [11] CHEN Zu-lin, XU Zheng-rui, NIE Hui-fang, et al(陈祖林,续正瑞,聂慧芳,等). Chinese Journal of Lasers(中国激光), 1994, 21(1): 77. [12] YAN Li-qiang(闫立强). Forensic Science and Technology(刑事技术), 2014, 10(s): 30. [13] WU Wen-juan, LI Dong, WANG Guo-xiang, et al(吴文娟,李 东,王国祥,等). Journal of Chemical Industry and Engineering(China)(化工学报), 2013, 64(4): 11571. [14] LI Rong-qing, LIU Ying, GE Li-xin, et al(李荣青,刘 莹,葛立新,等). Acta Photonica Sinica(光子学报), 2006, 35(3): 398. |
|
|
|