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KMID : 1024620080280030301
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Food Science of Animal Resources
2008 Volume.28 No. 3 p.301 ~ p.305
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Development of a Method for Detecting Iodide and Chloride Ions in Infant Formula using an Ion Selectivity Electrode
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Ko Jin-Hyouk
Kwak Byung-Man
Ahn Jang-Hyuk
Jeon Tae-Hong
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Abstract
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This study was carried out to develop an accurate and rapid analysis method to measure the contents of iodide and chloride in infant formula using an ion selectivity electrode. The infant formula SRM 1846 (Standard Reference Material 1846, NIST, USA) was used as a CRM (Certified reference material). Samples were dissolved in water with 3% acetic acid and filtered through filter paper and adjusted to pH 7.0 with 0.1N NaOH. At pH 7.0, the iodide content of the CRM was compared to the specification of of CRM, and the recovery was . The chloride content was compared to the specification of of CRM, and the recovery was . Ion selectivity electrodes could be successful1y used to determine the concentration of iodide and chloride ions in infant formula by a simple and rapid pretreatment of sample matrixes.
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KEYWORD
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iodide, chloride, ion selectivity electrode (ISE), infant formula
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