Acta Chimica Sinica ›› 1988, Vol. 46 ›› Issue (5): 500-502. Previous Articles     Next Articles

Original Articles

Triton X-100存在下镉试剂分光光度法测定痕量铊(III)

洪水皆;李庆喜;杨明东   

  1. 中国科学院环境化学研究所
  • 出版日期:1988-05-15 发布日期:1988-05-15

Spectrophotometric determination of trace amounts of thallium with cadion in the presence of triton X-100

HONG SHUIJIE;LI QINGXI;YANG MINGDONG   

  • Online:1988-05-15 Published:1988-05-15

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.

Key words: SPECTROPHOTOMETRY, TRACE ELEMENTS, COLOUR REAGENTS, CADMIUM, THALLIUM, TRITON X-100

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