Drobnik M
Zakład Tworzyw Uzdrowiskowych Państwowy Zakład Higieny, Poznań.
Rocz Panstw Zakl Hig. 1998;49(4):457-62.
The usefulness of the direct potentiometric method with an ion-selective electrode for determination of iodide ions in the iodised table salt was checked. The changes in the EJ-01 iodide electrode potential versus the concentration of J- ions in water solutions of potassium iodide and different amounts sodium chloride were studied. On the basis of the electrode calibration curves the ranges of detectability and correct determination as well as the sensitivity of the electrode were established. The studies were performed in solutions of natural iodised table salt with and without and internal standard. The results have proved that this method is unsuitable for determination of the content of J- ions in the commonly used iodised table salt.
检验了使用离子选择电极的直接电位法测定加碘食盐中碘离子的实用性。研究了EJ - 01碘离子电极电位随碘化钾水溶液及不同量氯化钠中I⁻离子浓度的变化。根据电极校准曲线确定了检测范围、正确测定范围以及电极的灵敏度。研究在添加和不添加内标的天然加碘食盐溶液中进行。结果证明该方法不适用于测定常用加碘食盐中I⁻离子的含量。
