摘要
亚硝酸盐在酸性介质中氧化碘盐中碘离子为碘，而碘遇淀粉呈蓝色。呈色液最大吸收峰590nm，在16～140ug碘范围内线性相关（r＝0．9997），回收率97～101％。
The iodine ion was oxidated to iodine with nitrte in acid medium. Iodine meeting starch showed blue colour. The maximum absorptive beam was reveled at 590nm,the line corelation was showed at 16~140μg iodine content, the recoverg was 97~101%
关键词
碘盐
碘
含量
比色
测定
Iodine Iodine fertified salt spectrometre
