家兔死后眼玻璃体液镁、铁含量与PMI关系的研究  

Study on the relationship between PMI and the concentration of magnesium and iron in the vitreous humor of rabbit after death

作　　者：许小明[1] 龚志强[1] 孙跃刚[2] 凌思群 赵晓东 曾宪斌 王登文[2] 

机构地区：[1]江西医学院法医学教研室,江西南昌330006 [2]南昌市公安局刑科所,江西330008 [3]南昌长凌地区人民检察院,江西330100 [4]江西省人民检察院技术处,江西南昌330029 [5]南昌市中级人民法院,江西330006

出　　处：《法医学杂志》2002年第2期65-66,共2页Journal of Forensic Medicine

基　　金：江西省自然科学基金资助项目(No.9940010)

摘　　要：目的寻找一种精确推定PMI的方法。方法应用电感耦合等离子体质谱(ICP-MS),检测家兔死后96h内眼玻璃体液镁、铁元素含量,探讨其与PMI的相关性。结果家兔死后0～48h眼玻璃体液镁元素含量与PMI显著相关,6～48h铁元素含量与PMI显著相关,其二项式回归方程分别为y=0.0738x2+0.6997x+11.45(R2=0.9119)、y=0.0411x2-0.3148x+1.4113(R2=0.9594)。结论家兔死后眼玻璃体液Mg、Fe含量变化可作为推定48h内PMI的参考指标之一。Objective To seek a exact method of estimating postmortem interval(PMI). Methods This study detected the concentration of magnesiumMgand ironFein vitreous humor of rabbit at96h after death and explored the relationship between their concentration and PMI using a method ICP-MS. Results The concentra - tion of Mg in vitreous humor of rabbit at48h after death and Fe in vitreous humor of rabbit at6-48h after death were related to PMI significantly .T he formulae of the relationship between PMI and Mg concentrations is y=0.0738x 2 +0.6997x+11.45 ( within48h ,R 2 =0.9119 ).The formulae of the relationship between PMI and Fe concentrations is y=0.0411x 2 -0.3148x+1.4113 ( within6-48h ,R 2 =0.9594 ) . Conclusion The concentration of Mg in vitreous humor of rabbit at48h after death and Fe in vitreous humor of rabbit at6-48h after death may be as reference indicator to estimate PMI.

关 键 词：眼玻璃体液 镁 铁 元素含量 死亡时间 家兔 法医学 

分 类 号：D919.4[医药卫生—法医学]