砷铈接触法测定人发中的微量碘

Microdose iodine assay in the hair by arsenic-cerium contact process

目的:建立人发中微量碘的测定方法。方法:利用在酸性溶液中,碘离子对亚砷酸还原四价铈离子具有催化作用,并且其作用与碘离子的浓度成正比,从而间接地测出样品中碘离子的含量。结果:该测定方法线性范围为:0～8.0μg,线性较好,且具有良好的精密度和准确性。结论:该方法可作为人体微量碘水平的检测方法,并适合于大量样品的处理分析。

Objective： To develop a method of assaying microdose iodine in hair. Methods： Iodine could catalyze the reduction reaction between arsenous acid and cerium quadrivalence ion, and The effect was direct ratio to the concentration of iodine ion. So it could test indirectly the content of iodine ion. Results： The method has good precision and accuracy and the linear range was 0-8.0μg. Conclusion： The method can be used in assaying the microdose iodine in hair and applied in the analysis of large number of samples.