Spectrophotometric determination of trace amounts of tellurium(IV) with tetramethylthiourea
- 1 January 1988
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in The Analyst
- Vol. 113 (9) , 1473-1475
- https://doi.org/10.1039/an9881301473
Abstract
A spectrophotometric method for the determination of trace amounts of tellurium(IV) in dilute hydrochloric acid is described. Concentrations of between 0.2 and 7 µg ml–1 of tellurium(IV) in the final solution can be determined by measuring the absorbance at 382 nm of the complex formed by the reaction of tellurium(IV) with tetramethylthiourea (ε= 2.14 × 104 l mol–1 cm–1). The method is simple, reliable and sensitive. Those foreign ions that interfere in the determination of tellurium(IV) are bismuth(III), selenium(IV), iron(III) and copper(II).Keywords
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