| Determination of total iodine in foods and dietary supplements using inductively coupled plasma-mass spectrometry. | |
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MedLine Citation:
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PMID: 22468359 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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A method was developed and validated for the determination of total iodine in a wide variety of food products and dietary supplements. The method involves a unique sample digestion with a KOH solution in an oven or by using an open-vessel microwave system. After digestion, a stabilizer is added and the solution is taken to volume, then filtered and analyzed either directly or after dilution. The amount of iodine is determined with inductively coupled plasma-mass spectrometry (ICP-MS). The method was validated by experiments to determine its precision, accuracy, linearity, specificity, ruggedness, and robustness. The LOQ of this method is 25-50 microg/kg. The method demonstrated an average RSD of 2.27% during analysis of milk powder and 4.30% during analysis of a dietary supplement tablet reference material. The accuracy of the method as determined with these same reference materials was 100 and 94.2%, respectively. The method has been used successfully on commodity foods, processed foods, dairy products, pet food, infant formula, animal feed, mineral premixes, and a variety of dietary supplements. |
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Authors:
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Darryl Sullivan; Richard Zywicki |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal of AOAC International Volume: 95 ISSN: 1060-3271 ISO Abbreviation: J AOAC Int Publication Date: 2012 Jan-Feb |
Date Detail:
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Created Date: 2012-04-03 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9215446 Medline TA: J AOAC Int Country: United States |
Other Details:
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Languages: eng Pagination: 195-202 Citation Subset: IM |
Affiliation:
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Covance Laboratories Inc., 3301 Kinsman Blvd, Madison, WI 53704, USA. darryl.sullivan@covance.com |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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