摘要
文章报道了用原子吸收光谱法测定与烟酸生成沉淀的Ｃｕ２＋量，间接测定烟酸含量的一种新方法．探索出烟酸在无标准品或纯品情况下的微量分析方法．这种方法在１．２～１６μｇ／ｍｌ范围内，吸光度与浓度呈线性关系，相关系数为０．９９９９，检测限为０．０５μｇ／ｍｌ．用于烟酸片的含量测定，平均回收率为（９９．２±１．１）％（ｎ＝８）．
An atomic absorption spectrometry was used for the indirect determination of niacin via niacin Cu(Ⅱ) precipitate. In this method, the calibration curve was linear for niacin in the range of 1.2 μg/ml to 16 μg/ml( r =0 999 9), and the detection limit is 0 05 μg/ml. This method has been used to determine niacin in tabllae acidi nicotinici, and the mean recovery is (99 2±1 1)% ( n =8). It provides a new atomic absorption spectrometric method for the determination of niacin.
出处
《西安交通大学学报》
EI
CAS
CSCD
北大核心
1997年第4期87-92,共6页
Journal of Xi'an Jiaotong University
关键词
烟酸
原子吸收谱法
测定
维生素类药物
niacin atomic absorption spectrometry method copper Cu 2+
