猪眼房水中K^+、Na^+质量浓度与死亡时间的关系  

The Relationship between PMI and Concentration of Potassium Ion and Sodium Ion in Swine Aqueous Humor after Death

作　　者：韩菊[1] 余广彪[1] 董业强[1] 方超[1] 竞花兰[1] 罗思敏 

机构地区：[1]中山大学中山医学院法医学系,广东广州510080 [2]清远市公安局,广东清远511519

出　　处：《法医学杂志》2010年第2期88-90,共3页Journal of Forensic Medicine

摘　　要：目的探讨房水中K+、Na+质量浓度与死亡时间(postmortem interval,PMI)的关系。方法利用Z-500原子吸收分光光度计检测在4℃、28℃下猪死后48h内眼房水中的K+、Na+质量浓度。结果4℃温度下,死后48h猪眼房水中K+、Na+质量浓度与PMI相关。推定方程为PMI=-0.178[K+]2+49.978(R2=0.995),PMI=120.987/[Na+/K+]-28.834(R2=0.905)。结论房水中K+质量浓度变化可作为推断低温环境下尸体PMI的参考指标之一。Objective To explored the relationship between the concentration of potassium ion as well as sodium ion in the aqueous humor and post-mortem interval （PMI）. Methods The concentrations of potassium ion and sodium ion in the aqueous hmnor of swine within 48 h after death at 4 ℃ and 28 ℃were detected using Z-500 atomic absorption spectrophotometer. Results The concentrations of potassium ion and sodium ion in aqueous humor of isolated swine eyeballs within 48 h after death when the environmental tempera- ture was 4 ~C were significantly related to PMI. The relationship between PMI and the concentration of potassium ion was PMI=-0.178[K＋]2＋49.978（R==0.995）. The relationship between PMI and the rate of sodi- um ion and potassium ion was PMI=120.987/[Na＋/K＋]-28.834（R2=0.905）. Conclusion The concentration of potassium in aqueous humor of isolated swine eyeballs may be one of the reference indicators to estimate PMI of the corpses at lower temperatures.

关 键 词：法医病理学 眼房水 钾 钠 死亡时间 猪 

分 类 号：R285.5[医药卫生—中药学]