电感耦合等离子体质谱法测定乳制品中的碘含量
Determination of Iodine Content in Dairy Products by Inductively Coupled Plasma Mass Spectrometry.
作者信息
Vance Kathryn A, Makhmudov Amir, Shakirova Gulchekhra, Roenfanz Hanna, Jones Robert L, Caldwell Kathleen L
机构信息
Centers for Disease Control and Prevention, National Center for Environmental Health, Division of Laboratory Sciences, Inorganic and Radiation Analytical Toxicology Branch 4770 Buford Hwy NE, MS F-18, Atlanta, GA 30341, USA.
出版信息
At Spectrosc. 2018 May 1;39(3):95-99.
A probing study to establish a reliable and robust method for determining the iodine concentration using the ELAN DRC II ICP-MS was performed in combination with a sample digestion and filtration step. Dairy products from locally available sources were evaluated to help determine the possibility and need for further evaluations in relation to the U.S. population's iodine intake. Prior to analysis, the samples were aliquoted and digested for 3 hours at 90±3 °C. Dilution and filtration were performed, following the digestion. The sample extract was analyzed, and the results were confirmed with NIST SRM 1549a Whole Milk Powder. Further experimentation will need to be performed to optimize the method for projected sample concentration and throughput.
开展了一项探索性研究，结合样品消解和过滤步骤，建立一种使用ELAN DRC II电感耦合等离子体质谱仪测定碘浓度的可靠且稳健的方法。对本地可得来源的乳制品进行了评估，以帮助确定针对美国人群碘摄入量进行进一步评估的可能性和必要性。分析前，将样品进行等分，并在90±3℃下消解3小时。消解后进行稀释和过滤。对样品提取物进行分析，并用NIST SRM 1549a全脂奶粉对结果进行确认。需要进行进一步的实验，以针对预计的样品浓度和通量优化该方法。
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