| 微分脉冲阳极溶出伏安法测定高纯金属铟中痕量铊 |
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| 引用本文： | 周漱萍,汪振辉.微分脉冲阳极溶出伏安法测定高纯金属铟中痕量铊[J].河南师范大学学报(自然科学版),1987(4). |
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| 作者姓名： | 周漱萍 汪振辉 |
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| 作者单位： | 河南师范大学化学系，河南师范大学化学系 |
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| 摘 要： | 本文提出用0.08M柠蒙酸-0.02MEDTA-5×10~-5MHg(NO_3)_2 PH6的底液,用JP-Ml型脉冲极谱仪,配合玻碳电极,选择适当的仪器参数,可以得到对称性很好的溶出峰,循环伏安图证明它,在此溶液中的可逆性好,大量共存离子无干扰。铊浓度在9.8×10~-9～11×15~-7M范围内,峰电流和浓度有良好的线性关系。基体铟简单分离后用此法测定时平均含量为1.1×10~-5％,变动系数为7.8％,回收率为95—104％,此方法准确可靠,灵敏度比F vydra等的溶出法高。
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| 关 键 词： | 溶出 脉冲极谱仪 伏安 它 测定 |
DETERMINATION OF TRACE THALLIUM IN HIGH-PURITY INDIUM BY DIFFERENTIAL PULSE ANODIC STRIPPING VOLTAMMETERY |
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| Zhou Shuping Wang Zhenhui.DETERMINATION OF TRACE THALLIUM IN HIGH-PURITY INDIUM BY DIFFERENTIAL PULSE ANODIC STRIPPING VOLTAMMETERY[J].Journal of Henan Normal University(Natural Science),1987(4). |
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| Authors: | Zhou Shuping Wang Zhenhui |
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| Institution: | Zhou Shuping Wang Zhenhui |
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| Abstract: | A good peak of thallium is obtained in a solution of 0.08M citric acid-0.02M EDTA-5×10~(-5)MEg(NO_3)_2(pH6) by JP-MI pulse polar-raphy with glassy carbon electrode. Thallium an be determined in the concentration over 9.8×10~(-9)-1.1×10(-7)M. The method is simple and sensitive, many kinds of metal ions did not interfere after matrix separated. Determination of 1.1×10(-5)% of T1 (I) gives the coefficient of variation of 7.8% and recovery of 95-104％. |
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| Keywords: | stripping pulse polarography voltammetry thallium determination |
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