Spectrophotometric method for the determination of microgram amounts of titanium using an extraction technique with diphenylglyoxal bis(2-hydroxybenzoylhydrazone)

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Abstract

Diphenylglyoxal bis(2-hydroxybenzoylhydrazone) forms an orange-yellow complex with titanium(IV) in weakly acid solution. This complex can be extracted into benzyl alcohol in 0.1 N sulfuric acid medium. In this solvent the extracted complex exhibits an absorption maximum at 500 nm with a molar absorptivity of 1.5 × 104M-1cm-1. Job's method and the molar ratio method indicate a 1:3 stoichiometric ratio. The interferences have been investigated and the reagent has been used successfully for the determination of titanium in minerals and alloys. © 1980.

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Silva, M., & Valcárcel, M. (1980). Spectrophotometric method for the determination of microgram amounts of titanium using an extraction technique with diphenylglyoxal bis(2-hydroxybenzoylhydrazone). Microchemical Journal, 25(1), 117–123. https://doi.org/10.1016/0026-265X(80)90252-0

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