食用碘盐是碘缺乏病防治的重要措施之一，随着碘盐的使用日趋普遍，对其质量进行监控也日渐迫切。目前市售碘盐多以加碘酸钾为主，测定方法有碘量法（直接滴定法）［１］、比色法［２］和催化动力学光度法［２］等，这些方法需要试剂多，操作繁杂费时，而且测定结果受多种因素? Iodized salt is one of the important measures to prevent iodine deficiency disease. With the increasing use of iodized salt, its quality monitoring is also increasingly urgent. At present, iodized salt is mainly potassium iodate in the market, and the determination methods include iodometric method (direct titration method) [1], colorimetric method [2] and catalytic kinetic spectrophotometry method [2] More complicated and time-consuming operation, and the determination of the results by a variety of factors?