甲拌磷在大鼠体内的死后分布研究

目的建立甲拌磷灌胃染毒致死的大鼠动物模型,建立生物检材中甲拌磷的气相色谱和气相色谱质谱联用检测方法 ,观察甲拌磷在3种剂量染毒大鼠体内的死后分布特点。方法大鼠2LD50、4LD50或8LD50甲拌磷灌胃染毒,死后立即解剖,采集心、肝、脾、肺、肾、脑、肌肉、睾丸、心血和胃组织,GC/MS、GC/FPD法定性定量检测各组织和心血中甲拌磷。结果大鼠2LD50、4LD50和8LD50甲拌磷染毒后31±3min、19±4min和11±6min死亡。气相色谱和气相色谱质谱联用法均可检到甲拌磷。染毒死亡大鼠体内甲拌磷的含量由高到低顺序依次为：2LD50组：胃组织〉肝〉脾〉肾〉肺〉脑〉睾丸〉肌肉〉心〉心血。4LD50组：胃组织〉肝〉肺〉脾〉肾〉睾丸〉肌肉〉脑〉心〉心血。8LD50组：胃组织〉肝〉肾〉脾〉肺〉心〉肌肉〉睾丸〉心血〉脑。结论甲拌磷在大鼠体内死后分布不均匀。胃组织中含量最高,其次是肝、脾、肺和肾,脑、肌肉和睾丸含量最低。甲拌磷的灌胃染毒致死动物模型、气相色谱和气相色谱质谱联用方法及死后分布规律可应用于甲拌磷中毒死亡案件的法医学鉴定和法医毒物动力学研究。

The study on the postmortem distributions of phorate in rats

Objective To establish a postmortem distribution model in rats after an intragastric administration,develop a qualitative and quantitative analysis of phorate in biological specimens by a GC equipped with a MSD and a FPD,observe the postmortem distribution of phorate in poisoning death rats with three doses of phorate. Methods Male rats were given an administration of 2LD50,4LD50 or 8LD50 phorate. As soon as their vital signs disappeared,the rats were dissected and the specimens-the heart,liver,spleen,lung,...