气相色谱法测定牙本质中天冬氨酸消旋化程度推断年龄的研究  

AGE ESTIMATION BY DETERMINATION OF THE DEGREE OF ASPARTIC ACID RACEMIZATION IN DENTIN

作　　者：段盛慧[1] 范垂昌[1] 刘俊亭[1] 宋宏伟[1] 张晓明[2] 付士江 

机构地区：[1]中国医科大学法医系,沈阳110001 [2]中国医科大学卫生系,沈阳110001

出　　处：《中国法医学杂志》1995年第1期26-28,共3页Chinese Journal of Forensic Medicine

摘　　要：本文应用手性毛细管柱气相色氨谱法，以酸性异丙醇、三氯乙酸酐为衍生化试剂，对不同年龄人的27颗第一磨牙牙本质中D型与L型天冬氟酸的浓度进行了测定，并计算了二者的比率，建立了消旋化程度与年龄的回归方程，r＝0．9568，SD＝4．5岁，本研究为用牙齿推断人的年龄提供了一个比较客观、准确的新手段。The ratio of concentrations of D-aspartic acid and L-aspartic acid in dentin of 27 premoars of different ages was determined with chiral capillary column gas. chromatography. Acidic isopropanol and trifluoroacetic acid anhydride were derivative agents. The linear regression between the degree of racemization and age was established, r= 0. 9568, SD= 4. 5 years. This seems to be a new method which is more accurate and objective than others in age estimation with teeth.

关 键 词：天冬氨酸 消旋化 手性毛细管柱 牙本质 年龄推断 

分 类 号：R89[医药卫生—法医学]