【摘要】 本文用高压湿法消化器做人体样品预处理,有效地防止了消化过程中硒的挥发损失。应用微分脉冲阴极溶出伏安法研究了人体样品中痕量硒的测定方法,通过实验,确定了最佳测试条件,方法的检出下限为2×10^-10mol/L。实测人体样品,硒的回收率为102.8±7.3％（（?）±SD）,变并系数CV=7.1％。用本法检测了头发、子宫绒毛、脐带血清、孕妇羊水等样品中的痕量硒,均获得满意结果。更多还原

【Abstract】 We used the High Pressure Wet Digestive method in the pre’.reatment-of the samples of human body materials with satisfactory rcsul:.s. This method prevented the loss of Selenium caused by evaporation during digestion. We studied the method of determination for trace Selenium in human body by using differential pulse polarography (stripping voltammetry). Through experiments, we obtained the best condition for t.he determination of trace Selenium by voltammetry .The detection limit of this method was 2×10-10mol/L, and retrieve ratio was 102.8±7.8%(x±SD), with the varia’ve coefficient being CV = 7.1%. The data were obtained from analyzing some samples of human body materials (hair, uterine villi, serum of umbilical cord, and gravida amhio’.ic fluid etc). Satisfactory results were obtained in all experiments.更多还原