| Triton X-100存在下镉试剂分光光度法测定痕量铊(III) |
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| 引用本文： | 洪水皆,李庆喜,杨明东. Triton X-100存在下镉试剂分光光度法测定痕量铊(III)[J]. 化学学报, 1988, 46(5): 500-502 |
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| 作者姓名： | 洪水皆 李庆喜 杨明东 |
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| 作者单位： | 中国科学院环境化学研究所 |
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| 摘 要： | 本文首次提出了在Triton X-100存在下, 以镉试剂作显色剂于水相直接分光光度法测定了痕量铊, 结果表明: 该体系具有很高的灵敏度, 是目前分光光度法测定铊的最灵敏方法之一.
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| 关 键 词： | 分光光度法 痕量元素 显色剂 镉 铊 ＴＲＩＴＯＮＸ-１００ |
Spectrophotometric determination of trace amounts of thallium with cadion in the presence of triton X-100 |
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| HONG SHUIJIE,LI QINGXI,YANG MINGDONG. Spectrophotometric determination of trace amounts of thallium with cadion in the presence of triton X-100[J]. Acta Chimica Sinica, 1988, 46(5): 500-502 |
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| Authors: | HONG SHUIJIE LI QINGXI YANG MINGDONG |
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| Abstract: | A highly sensitive spectrophotometric method for the determination of trace amts. of thallium(III) using Cadion and Triton X-100 is described. It is the most sensitive method for the determination of thallium in aqueous solution In buffered solution (H4Cl-NH4OH) at pH 11.0 and in the presence of a nonionic surfactant, Triton X-100, thallium(III) and Cadion form a complex with the molar ratio of Tl:Cadion = 1:5. The complex exhibits an absorption max. at 470 nm with a molar absorptivity of 1.37 ?105 L mol-1 cm-1. Beer's law obeyed for 0-1.2 ppm Tl. |
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| Keywords: | SPECTROPHOTOMETRY TRACE ELEMENTS COLOUR REAGENTS CADMIUM THALLIUM TRITON X-100 |
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