【摘要】 目的为碘盐中微量碘的测定提供一种直观、快速的测定方法。方法用离子选择性电极浓度直读法测定碘盐中微量的碘。实验对离子强度缓冲调节剂、还原剂的选择及用量,方法回收率、精密度、检出限及干扰进行了探讨,并对实际样品进行了测定。结果方法的加标回收率为95.2%～111.5%,RSD(n=11)为0.9%,检出限为1.10×10-2mg/L。结论方法可靠,结果令人满意。更多还原

【Abstract】 Objective: It afford a visualized and swift method to the determination of the micro-iodine in iodic-salt. Methods: This article adopted ion-selective electrode-direct reading method to determine the iodine in iodic-salt. The experiment re- searched the TISAB, reducing agent, the recovery, the precision and the detection limit and the interference of this method, and the samples was determined. Results: The recovery is 95.2%～111.5%, the RSD( n=11) is 0.9%, the detection limit is 1.10× 10-2mg/L. Conclusions: This method is infallible and the result is satisfying.更多还原