摘要
碘是人体和智力发展必需的微量元素。碘阴离子的测定一直是一项重要的课题。离子色谱测定碘离子是一种很好的方法。用阴离子交换物分离,用不同的检测器检测,往往保留时间较长,线性较差,峰形不对称,我们利用碘离子的强保留的特征,采用短分离柱,缩短了分离时间,线性和峰形均有所改善。 实验部分 (一)仪器与试剂 离子色谱仪(Dione 4000i),脉冲安培检测器(Dionex)。
The determination of iodide using ion chromatography with Ag electrode amperometric detection has been developed. The separation is in the anion exchange column (Dionex HPIC-AG4)and eluent consisting of 2.3mmol/L NaHCO3 and 2.8mmol/L NazCO3 at 2.0ml/min. The deteetion limit is 15ng/ml I. It is good in the linearity and precision. The interference of the other species is discussed. The method nas been applied to the analysis of iodide in iodized salt.
出处
《色谱》
CAS
CSCD
北大核心
1989年第6期382-383,356,共3页
Chinese Journal of Chromatography
