大鼠尸体组织电阻抗的死后变化及与死亡时间的关系

目的探讨躯体组织的电阻抗的死后变化规律,寻找推断死后经过时间的新方法。方法用阻抗测量仪测量大鼠胃壁、腹壁、躯干、胸部、腹部、腹部皮肤、头皮等处不同死后经过时间的电阻抗。结果大鼠躯体组织的电阻抗随着死后经过时间的延长存在规律性变化。这些结果告诉我们,有望通过测量死后人体躯体组织的电阻抗,利用其死后变化规律,推断人体死后经过时间。

串联质谱法检测复杂基质中的吗啡

Morphine in complex background may be determined by tandem mass spectrometry. The result shows that the mass'spectrum of the second ionization of morphine fragment ion at m/z 285 is clear when the collision energy is about 1.5V. At the same time the impurity peak in complex background was eliminated, selectivity and sensitivity of determination for morphine was raised with this method.