Determination of iodine in laver by ion chromatography with conductivity detection
Objective:To establish a method for the determination of iodine in laver by ion chromatography withconductivity detec-tion.Methods:After the samples were carbonized and ashed,the iodine content was determined by ion chromatography.And the method characteristic experiments were carried out.Results:The detection range was 0.5～10 mg/L iodine,the average correla-tion coefficient of the standard curve was 0.9995,the recoveries of iodine standard addition to samples were 97.8％～99.9％(n=6).accuracy:the coefficient of variation(CV)were 0.33％～2.48％(n=6);there was no significant difference between the re-sults of 20 laver samples measured by two methods(t=0.396,P＞0.05).Conclusion:The application of ion chromatography for the determination of iodine in laver has high precision and accuracy,simple and rapid,high sensitivity and little pollution.This method is suitable for the determination of total iodine in laver.
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万方数据
维普
