碘(iodion)是维持人体甲状腺正常结构与机能的重要元素,对缺碘地区食盐加碘量及防治缺碘性疾病的效果考核依靠对碘化物的准确定量。食盐碘测量方法颇多,但都有一定局限和不足。如存在消除多余氧化剂手续,加热碘挥发及滴定带来的系统与偶然误差等。而且使用试剂类多量大,操作费时,实验条件苛刻, Iodine (iodion) is to maintain the normal structure and function of the thyroid an important element of the iodine-deficient areas of salt iodization and prevention of iodine deficiency disease test results rely on the accurate quantification of iodide. There are many ways to measure salt iodine, but there are some limitations and deficiencies. If there is the elimination of excess oxidant procedures, heated iodine volatilization and titration bring system and accidental errors. And use large amount of reagents, operating time-consuming, harsh experimental conditions,