利用掩蔽系数同时测定中草药中的钼和铜(PF-PAN-TritonX-100体系)  

Simultaneous Determination of Molybdenum and Copper in Chinese Traditional Herb Drags Using Masking Coefficients

作　　者：高景芝[1] 王孝珍[1] 胡秋菊[1] 

机构地区：[1]首都师范大学化学系

出　　处：《北京师范学院学报（自然科学版）》1998年第2期51-53,共3页

摘　　要：本文研究了在混合显色剂（ＰＦ＋ＰＡＮ）的胶束体系中，利用掩蔽系数同时测定中草药中钼和铜的光度分析法．实验表明：在混合体系中，钼量在０～１０μｇ，铜量在０～５０μｇ的范围内符合比耳定律，ε′Ｍｏ＝９２×１０４，ε′Ｃｕ＝１５×１０４．该法用于中草药样品的分析，结果令人满意，回收率可达９２％～１１１％．In this paper it is investigated to determine simaltaneously molybdenum and copper in chinese traditional herb drags by means of masking coefficients and speetrophotometric method in micellar system contained mixed color developing agents PF PAN.Experimental results have shown that in this system Beer's law is obeyed in the range 0～10μg Mo and 0～50μg Cu and with molar absorptivities ε Mo =9 2×10 4L·mol -1 ·cm -1 and ε Cu =1 5×10 4L·mol -1 ·cm -1 ,and this method is satisfactory to analyse the samples of chinese taditional herb drugs with recoveries 92～111%.

关 键 词：掩蔽系数 中草药 钼 铜 混合显色剂 主要仪器 试剂 灵敏度 标准曲线 样品分析 

分 类 号：R284.1[医药卫生—中药学]