Sensitive spectrophotometric determination of traces of zirconium with 2-(6-bromo-2-benzothiazolylazo)-5-diethylaminophenol in the presence of sodium lauryl sulphate

C P Zhang; D Y Qi; T Z Zhou

doi:10.1016/0039-9140(82)80229-4

Sensitive spectrophotometric determination of traces of zirconium with 2-(6-bromo-2-benzothiazolylazo)-5-diethylaminophenol in the presence of sodium lauryl sulphate

Talanta. 1982 Dec;29(12):1119-21. doi: 10.1016/0039-9140(82)80229-4.

Authors

C P Zhang¹, D Y Qi, T Z Zhou

Affiliation

¹ Department of Chemistry, Guizhou University, Guiyang, China.

PMID: 18963267
DOI: 10.1016/0039-9140(82)80229-4

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.