【摘要】 基于芦丁在K2S2O8存在下产生的极谱催化波,拟定了测定中草药中芦丁的方法。在0.1 mol/L HAc-NaAc(pH 3.60±0.05),8×10-3mol/L K2S2O8支持电解质中,芦丁催化波峰电位为-1.37 V(vs.SCE),它的二阶导数峰电流与其浓度在1.6×10-6~1.6×10-5mol/L范围内呈线性关系(r=0.9960,n=6)。检出限为9.013×10-11mol/L,回收率为96.18%~102.66%。样品可不经分离,直接测定。采用该方法测得山楂和川明参中芦丁的质量分数分别为1.78%和1.60%。更多还原

【Abstract】 A novel method for the determination of rutin was proposed based on its polarographic catalytic wave in the presence of K₂S₂O₈.In 0.1 mol/L NaAc-HAc（pH 3.60±0.05）and 8×10^-3 mol/L K₂S₂O₈ supporting electrolyte,the peak potential of a catalytic wave for rutin was observed at-1.37 V（vs.SCE）.The peak current of the catalytic wave was rectilinear to the rutin concentration in the range of 1.6×10^-6～1.6×10^-5 mol/L（r=0.9960,n=6）.The detection limit is 9.013×10^-11 mol/L.The contents of rutin in the hawkthorn and chuanminshen,and rutin products can be directly determined without preseparation.This method is sample,rapid and accurate.更多还原