茜素红荷移光度法测定阿魏酸哌嗪

研究了茜素红与阿魏酸哌嗪的显色反应,建立了阿魏酸哌嗪含量测定的分光光度法.在水溶剂中阿魏酸哌嗪与茜素红发生荷移反应生成紫红色的复合物,其最大吸收波长为524nm,表观摩尔吸光系数为1.86×103 L·mol-1·cm-1.阿魏酸哌嗪的浓度在1.60⁴8.0mg·L-1范围内与体系的吸光度呈良好的线性关系,其线性回归方程为A=0.021 07+0.003 93c(mg·L-1,R=0.999 2),方法的检出限为1.19mg·L-1.将此新方法应用于阿魏酸哌嗪片中阿魏酸哌嗪含量的测定,回收率在97.5%48.0mg·L-1范围内与体系的吸光度呈良好的线性关系,其线性回归方程为A=0.021 07+0.003 93c(mg·L-1,R=0.999 2),方法的检出限为1.19mg·L-1.将此新方法应用于阿魏酸哌嗪片中阿魏酸哌嗪含量的测定,回收率在97.5%¹00.9%之间.

Spectrophotometric determination of piperazine ferulate based on the charge transfer reaction between piperazine ferulate and alizarin red

A new established using reaction between plex was formed. method for alizarin red piperazine f the determination of piperazine ferulate by spect as a chromogenic reagent. In water solution, erulate and alizarin red was investigated and th The apparent molar absorptivity of the comp at the maximum absorption wavelen 60--48.0 mg·L^-1 lofpiperazineferu was A = 0. 021 07＋0. 003 93 c （mg tionlimit was 1. 19 mg·L^-1. This ferulate in tablets with recoveries of gth of 524 nm. T late. The linear r ·L^-1） withacor new method is 97.5%0--100.9 he Beer＇s egresslon lex is 1.8 Law is ob equation relation coefficient rophotometry is charge transfer e purple color corn 6X10a L ·mol^-1 .cm-1 eyed in the range of 1. of the calibration curve of 0. 999 2. The detec- applied to the determination of piperazine