| 氯胺T-四碱分光光度法测定土壤中微量碘 |
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| 引用本文： | 胡兰,杨刚. 氯胺T-四碱分光光度法测定土壤中微量碘[J]. 农业科学与技术, 2009, 10(5): 13-14,17 |
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| 作者姓名： | 胡兰 杨刚 |
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| 作者单位： | 安徽地质实验研究所,安徽合肥230001 |
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| 摘 要： | 优化了氯胺T-四碱催化分光光度法测定土壤中微量碘的试验条件：比色时间25S、醋酸加入量4ml、四碱加入量5ml、氯胺T加入量2ml（1．2g／L）。并对国家一级标准物质（GBW07401、GBW07403、GBW07d05）进行分析，结果证明其测定值与推荐值吻合，检出限为0．16μg/g，方法相对标准偏差小于8％。且该法较Fe^3＋．SCN^-．NO2^-体系测定微量碘更为简便快速，更利于微量碘的批量测定。
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| 关 键 词： | 碘 氯胺T-四碱体系 催化分光光度法 土壤 |
Spectrophotometric Determination of Lodine in Soils by Chloramine T-Tetrabase System |
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| HU Lan,YANG Gang. Spectrophotometric Determination of Lodine in Soils by Chloramine T-Tetrabase System[J]. Agricultural Science ＆ Technology, 2009, 10(5): 13-14,17 |
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| Authors: | HU Lan YANG Gang |
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| Affiliation: | (Anhui institute of Geological Experiment, Hefei 230001) |
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| Abstract: | Optimized the experimental conditions of determination of trace iodine in soil in chloramine T-Tetrabase system, and analysis the national standards material, the results showed that the measured values was to be identical with recommended values with a detection limit of 0.16 μg/g, and the relative standard deviation was less than 8%, the whole process was short in time and simple, so it was applicable to the determination of trace iodine in batches. |
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| Keywords: | Iodine Chloramine T-Tetrabase system Catalytic spectrophotometry Soilqq.com |
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