大鼠死后肺脏FTIR光谱变化与死亡时间的关系
发布时间：2018-10-21 11:56
【摘要】：应用傅里叶变换红外(FTIR)光谱分析大鼠死后肺脏组织随死亡时间推移的化学降解过程,为法医死亡时间推断提供新的研究方法。结果表明,随着死亡时间的推移,大鼠肺脏组织FTIR光谱的主要吸收峰峰位没有明显变化,而其峰高有明显差异:(1)与核酸有关的1080,1241cm-1谱带的峰强呈下降趋势。(2)酰胺Ⅰ(I1647),Ⅱ(I1541)峰强比随死亡时间推移下降。1338和1313cm-1处的吸收峰强略有升高。(3)1460,1400,1170cm-1的谱带没有明显变化趋势。(4)死亡72h后,1120cm-1处出现新的吸收峰,吸收强度随时间推移逐渐增高;这一结果表明FTIR光谱分析技术有望成为法医死亡时间推断的有效方法。
[Abstract]:Fourier transform infrared (FTIR) spectroscopy was used to analyze the chemical degradation process of rat lung tissues after death, which provided a new method for estimating the death time of forensic doctors. The results showed that there was no significant change in the peak position of the main absorption peaks in the FTIR spectra of the lung tissues of the rats with the passage of the death time. (1) the peak intensity of the nucleic acid-related band of 1080,1241cm-1 decreased. (2) the ratio of peak strength of amide 鈪，
本文编号：2285020
[Abstract]:Fourier transform infrared (FTIR) spectroscopy was used to analyze the chemical degradation process of rat lung tissues after death, which provided a new method for estimating the death time of forensic doctors. The results showed that there was no significant change in the peak position of the main absorption peaks in the FTIR spectra of the lung tissues of the rats with the passage of the death time. (1) the peak intensity of the nucleic acid-related band of 1080,1241cm-1 decreased. (2) the ratio of peak strength of amide 鈪，
本文编号：2285020
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