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| Determination of Iodine Content in Infant Formula Cereals by Ion Chromatography |
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| DOI：10.3969/j.issn.1004-4957.年份.月份 |
| KeyWord:ion chromatography iodine content infant formula cereals iodide iodate |
| Author | Institution |
| WANG Louming,LIN Yankui,WANG Bingtao,YAN Zhi,LI Yong,LIANG Yanling,MENG Lingbing,XIE Zongliang |
深圳出入境检验检疫局 |
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| Abstract: |
| An ion chromatographic method in combination with pulsed amperometric detection was developed for the analysis of added iodide and iodate in infant formula cereal products.The protein removal mode and the amount of protein precipitant were studied.The opitimun conditions for ultrasonic extraction were explored and the dosage of reductant for iodate to iodide was investigated.Under the optimum conditions,the method showed good linearity in the range of 1-100 μg/L for iodide and iodate with correlation coefficients of 0999 1 and 0999 9,respectively.The quantitation limits were 52 ng/g and 90 ng/g,respectively.The spiked recoveries for iodide and iodate were in the range of 74%-100% and 75%-100%,respectively,with RSDs of 44%-67% and 50%-69%,respectively. |
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