Spectrophotometric determination of thallium in zinc and zinc-base alloys with iodoacetic acid and hexamethylenetetramine期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Spectrophotometric determination of thallium in zinc and zinc-base alloys with iodoacetic acid and hexamethylenetetramine

Authors:	Dragan Mihajlović Trajče Stafilov

Affiliation:	(1) Technical Control Department, Iron and Steel Work Skopje, 91000 Skopje, Macedonia;(2) Institute of Chemistry, Faculty of Science, St. Kiril and Metodij University, PO Box 162, 91001, Macedonia

Abstract:	Thallium(III) forms a ternary complex of yellow colour with iodoacetic acid and organic bases, especially hexamethylenetetramine. The complex is soluble in water and various organic solvents. Zinc, copper, cadmium and iron do not form complexes with these reagents, so that a spectrophotometric determination of thallium in zinc and its alloys is possible. The limit of detection is 15 gg^–1, the molar absorption coefficient about 2000 mol^-1l^-1cm^-1.

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