| 利用催化动力学原理测定化探样中微量碘的含量 |
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| 引用本文： | 吴萍,李锟. 利用催化动力学原理测定化探样中微量碘的含量[J]. 化工矿产地质, 2007, 29(1): 42-44 |
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| 作者姓名： | 吴萍 李锟 |
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| 作者单位： | 中化地质矿山总局中心实验室,河北,涿州,072750;中化地质矿山总局中心实验室,河北,涿州,072750 |
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| 摘 要： | 在HAc-NaAc形成的中性缓冲溶液体系中,利用碘的催化动力学原理,使N-N-四甲基-4-4-二氨基二苯甲烷与氯胺T的氧化反应,生成蓝色络合物来测定地探样中微量碘的含量。通过实验,最佳试剂加入量为8%的HAc溶液5mL,8%的Na2CO3溶液3mL,0.1%的N-N-四甲基-4-4-二氨基二苯甲烷溶液5mL所组成的溶液体系中,在加入0.1%的氯胺T1mL显色后,其测定结果准确度、精密度高,检出限低,测定化探样中微量碘时该方法可以推广应用。
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| 关 键 词： | 缓冲体系 试剂加入量 测定结果 |
| 文章编号： | 1006-5296(2007)01-0042-03 |
| 修稿时间： | 2006-10-08 |
THE CATALYSIS DYNAMICS THEORY FOR THE DETERMINING OF MINIM IODINE CONTENT OF GEOCHEMICAL EXPLORATION SAMPLES |
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| Wu Ping,Li Kun. THE CATALYSIS DYNAMICS THEORY FOR THE DETERMINING OF MINIM IODINE CONTENT OF GEOCHEMICAL EXPLORATION SAMPLES[J]. Geology of Chemical Minerals, 2007, 29(1): 42-44 |
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| Authors: | Wu Ping Li Kun |
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| Affiliation: | Centre lab. For the China Chemical Geological Mining General Bureau, Zhuozhou, Hbei, 072754, China |
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| Abstract: | Using the catalysis dynamics theory of iodine to determine the minim iodine of geochemical exploration samples in the neutral buffer solution system generated by HAc-NaAc,of which ,the Oxidation reaction of chloramines and diaminodiphenylmethane generating blue complex. Based on the experiment ,the optimal reagent imputting quantity is a solution system composed of 5mL liquor of 8% HAc ,3mL liquor of 8% Na2CO3,and 5mL liquor of 0.1%N-N-tetramethy1-4-4-diaminodiphenylmethane,the measuring results with high accuracy and precision and low detection limit after showing color by imputing 1mLliquor of 0.1% chloramine T. |
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| Keywords: | buffer solution system imput reagent quantity measuring result |
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