| 碘离子选择电极浓度直读法测定小麦中的碘含量 |
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| 引用本文： | 宋莲军,任红涛,柳艳霞,高向阳,耿关飞. 碘离子选择电极浓度直读法测定小麦中的碘含量[J]. 食品与发酵工业, 2006, 32(3): 89-91 |
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| 作者姓名： | 宋莲军 任红涛 柳艳霞 高向阳 耿关飞 |
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| 作者单位： | 河南农业大学生物技术与食品科学学院,郑州,450002 |
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| 摘 要： | 利用碘离子选择电极,在H2CO3NaHCO3为总离子强度调节剂、Na2SO3为还原保护剂、双液接饱和甘汞电极为参比电极的条件下,采用浓度直读法测定小麦中碘含量。结果表明:碘离子浓度在1.0×10-2～1.0×10-6mol/L范围内线性关系良好,该方法的回收率为95.4%～105.0%,相对标准偏差(RSD)<2%,可以用于小麦中碘含量的测定。
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| 关 键 词： | 小麦 碘 离子选择性电极 浓度直读 |
| 收稿时间： | 2005-05-21 |
| 修稿时间： | 2005-05-21 |
Determination of Iodine Content in Wheat by Iodin Ion- selective Electrode with Concentration Direct Reading Mode |
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| Song Lianjun,Ren Hongtao,Liu Yanxia,Gao Xiangyang,Geng Guanfei. Determination of Iodine Content in Wheat by Iodin Ion- selective Electrode with Concentration Direct Reading Mode[J]. Food and Fermentation Industries, 2006, 32(3): 89-91 |
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| Authors: | Song Lianjun Ren Hongtao Liu Yanxia Gao Xiangyang Geng Guanfei |
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| Abstract: | The iodine content in wheat was measured by with ion selective electrode concentration direct readine mode a using a mixed solution of H_2CO_3-NaHCO_3 as the total ionic strenth adjustment buffer,Na_2SO_2 as the reduction protecting agent,and double junction saturation camolel electrode as the reference electrode.The results showed that the linear range was 1.0×10 -2～1.0×10 -5 mol/L,the recovery rate was 95.4%～105.0%,the relative standard deviation was less than 2%.The method was suitable for the determination of iodine content in wheat. |
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| Keywords: | wheat iodine ion selective electrode concentration readout |
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