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目的为了准确的测定川盐中碘的含量,比较仲裁法和国标法测定川盐碘含量和测定碘酸钾标准物质中碘含量结果的差异。方法分别用仲裁法和国标法对抽取的288个样品及标准物质进行测定。结果288个样品的碘含量国标法和仲裁法测定结果的差异有统计学意义,碘酸钾标准物质结果差异无统计学意义。结论在食盐碘的测定中,对川盐的测定应用仲裁法能准确反映碘含量。
Objective To determine the content of iodine in Sichuan salt accurately, compare the difference between the results of arbitration method and the national standard method in determining the content of iodine in Sichuan salt and the content of iodine in the reference substance of potassium iodate. Methods The arbitration method and GB method were respectively used to determine 288 samples and reference materials. Results The iodine content in 288 samples was significantly different between the national standard method and the arbitration method. There was no significant difference in the results of iodate standard materials. Conclusion In the determination of salt iodine, the method of arbitration can accurately reflect the iodine content of the salt of Chuan salt.