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  • Title: Sensitive spectrophotometric determination of traces of zirconium with 2-(6-bromo-2-benzothiazolylazo)-5-diethylaminophenol in the presence of sodium lauryl sulphate.
    Author: Zhang CP, Qi DY, Zhou TZ.
    Journal: Talanta; 1982 Dec; 29(12):1119-21. PubMed ID: 18963267.
    Abstract:
    A simple and highly sensitive procedure for spectrophotometric determination of zirconium has been developed. At pH 4.6, zirconium reacts with 2-(6-bromo-2-benzothiazolylazo)-5-diethylaminophenol in the presence of sodium lauryl sulphate to form a red-violet complex, which has an absorption maximum at 520 nm. The molar absorptivity at 520 nm is 4.4 x 10(5) 1.mole(-1) .cm(-1). Beer's law is obeyed for 0.25-1.50 mug of zirconium in 25 ml of solution. The method has been used in the determination of zirconium in aluminium alloy and steel samples.
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