| 分光光度法测定食盐中的碘 |
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| 引用本文： | 杨兵,彭传友,夏兰. 分光光度法测定食盐中的碘[J]. 光谱实验室, 2011, 28(4): 1778-1781 |
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| 作者姓名： | 杨兵 彭传友 夏兰 |
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| 作者单位： | 1. 重庆化工职业学院应用化学系 重庆市江北区嘉陵四村100号400020
2. 重庆市水产技术推广站 重庆市渝北区龙溪街道金龙路64号-3 400030 |
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| 摘 要： | 采用分光光度法对食盐中碘含量进行定量分析.对反应条件进行试验及优化,得最佳测定条件为:测定波长565nm,0.5mol/L盐酸2.00mL、3%双氧水3.00mL、10g/L淀粉1.00mL,显色时间10min.在此条件下测得碘含量为29.32mg/kg,符合国家标准.本方法操作简便,可靠,重现性好,专属性强,具有广泛...
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| 关 键 词： | 碘 分光光度法 食盐 双氧水 |
Determination of Iodine in Salt by Spectrophotometry |
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| YANG Bing,PENG Chuan-You,XIA Lan. Determination of Iodine in Salt by Spectrophotometry[J]. Chinese Journal of Spectroscopy Laboratory, 2011, 28(4): 1778-1781 |
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| Authors: | YANG Bing PENG Chuan-You XIA Lan |
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| Affiliation: | a(Department of Applied Chemistry,Chongqing Chemical Industry Vocational College,Chongqing 400020,P.R.China)a(Aquaculture Technology Extension Station in Chongqing,Chongqing 400030,P.R.China) |
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| Abstract: | The content of iodine in salt was quantitatively analyzed by spectrophotometry.The reaction conditions were tested and optimized,and optimal reaction conditions were obtained as follows：detection wavelength of 565nm,0.5mol/L HCl dosage of 2.00mL,3% hydrogen peroxide dosage of 3.00mL,10g/L starch dosage of 1.00mL,coloration time of 10min and the iodine content of 29.32mg/kg under the conditions,that met national standard.The method is convenient,accurate,practicable,and has good reproducibility and good specificity,that has same advantages and practical significance. |
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| Keywords: | Iodine Spectrophotometry Salt Hydrogen Peroxide |
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