| 测定食盐碘含量及其影响因素研究 |
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| 引用本文： | 额尔登桑,耐登,柴志波. 测定食盐碘含量及其影响因素研究[J]. 食品研究与开发, 2012, 33(2): 126-130 |
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| 作者姓名： | 额尔登桑 耐登 柴志波 |
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| 作者单位： | 内蒙古师范大学化学与环境科学学院,内蒙古呼和浩特,010022 |
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| 基金项目： | 内蒙古自治区科技计划项目资助(20080502) |
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| 摘 要： | 用碘离子选择性电极测定食盐中碘含量并对影响因素进行探讨。在Na2SO3作还原剂,双盐桥甘汞电极作参比电极的条件下,引入表面活性剂,使碘离子的浓度在2.0×10-7mol/L~1.0×10-2mol/L范围内的对数与响应电位值呈良好的线性关系。试验结果显示:碘盐中的碘含量为27.22 mg/kg,均达到国家标准,同时讨论温度、时间等对碘含量的影响。碘的回收率在94.99%～106.3%之间,相对标准偏差RSD≤3.23%。
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| 关 键 词： | 离子选择性电极 食盐 影响因素 碘损失 |
Research on Temperature Effect and Determination of Iodine Content in Iodacted Salt |
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| E Erdengsang , NAI Deng , CHAI Zhi-bo. Research on Temperature Effect and Determination of Iodine Content in Iodacted Salt[J]. Food Research and Developent, 2012, 33(2): 126-130 |
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| Authors: | E Erdengsang NAI Deng CHAI Zhi-bo |
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| Affiliation: | (Chemistry & Environment Science College,Inner Mongolia Normal University,Huhhot 010022,Inner Mongolia,China) |
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| Abstract: | Determinate the Iodine in table salt by Iodine Ion-selective electrode and then discusse about it’s influence factors.Take Na2SO3 as a reductant,in the double salt bridge GanGong for the reference electrode sitnatoin,inducted surfactant,that makes the iodine ion concentration within 2.0×10-7 mol/L-1.0×10-2 mol/L the scope of the logarithmic and response potential value was good linear relationship.The results showed that: the iodine content in Table Salt is 27.22 mg/kg,all had reached national standards.At the same time discussed the influence about the temperature,time and so on.The recovery are between 94.99 %-106.30 %,The relative standard deviation(RSD) is not more than 3.23 %. |
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| Keywords: | ion-selective electrode table salt effective factors the loss of iodine |
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