根据安乃近在 0 .1mol·L-1 KNO3 底液中产生切口 ( - 1 .2V(vs.SCE) )的示波特性 ,建立了安乃近的二次微分简易示波伏安测定法 ,并对安乃近片剂中的含量进行了直接测定 .校正曲线的线性范围为 5.0× 1 0 -6 ～ 5.0× 1 0 -5mol·L-1 ,检出限为 2× 1 0 -6 mol·L-1 ,对 3 .0 0 0× 1 0 -5mo1·L-1 安乃近五次测定结果的相对标准偏差为 2 .1 % .本法具有仪器装置简单、经济 ,方法简便、快速 ,无需通氮除氧以及不必滤除赋形剂等优点
Based on the oscillographic characteristic of novalgin that incision can be caused at -1.2 V( vs .SCE) in 0.1 mol·L -1 KNO 3 , a new electronanlytical method, second order differential simple oscillographic voltammetry for the determination of novalgin was found. The method was applied to the determination of novalgin in tablet. The calibration graph is linear from 5.0×10 -6 to 5.0×10 -5 mol·L -1 with a detection limit of 2×10 -6 mol·L -1 . The relative standard deviation of the method is 2.1% for 3.00×10 -5 mol·L -1 novalgin.The determination results showed that the simple oscillographic voltammetry is a convenient method for its cheap equipment and rapid measurement.
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