2,4,6-tris{2'[4'-(p-sulfophenyl)pyridyl]}-s-triazine: a new analytical reagent for the spectrophotometric...

The sulfonated analog (TPPTZ-S) of 2,4,6-tris[2'-(4'-phenylpyridyl)]-s-triazine has been synthesized and its analytical utility investigated. The characteristics of the iron(II) complex of this ligand, including optimum conditions of formation, adherence to Beer's law and relative stability are described. Procedures for the quantitative determination of trace amounts of iron with TPPTZ-S are given. The analytical applicability of the reagent is illustrated by the successful determination of iron in E. coli and various beverage and beer samples.