M. Shahvazian
Department of Textile Engineering, Islamic Azad University, Yazd Branch
[ 1 ] - Janus Green Dye as a New Reagent for Catalytic Kinetic Determination of Zirconium in Ceramic Materials
A new catalytic kinetic spectrophotometric procedure for determination of trace quantities of zirconium was proposed. Janus Green was oxidized by potassium bromate and zirconium catalyst which then converted to a colorless product in acidic media. Reaction rate was monitored spectrophotometrically at 606 nm. It relies on the linear relationship between the absorbance difference (ΔAt) and Zr(IV)...
[ 2 ] - Application of Thionine Dye for Highly Sensitive and Selective Catalytic kinetic Determination of Osmium
Anew, highly sensitive and selective catalytic kinetic method (CKM) for determination of osmium (VIII) has been established based on its catalytic effect on the oxidation of thionine dye by hydrogen peroxide in alkaline medium. The reaction has been followed spectrophotometrically by measuring the decrease in the absorbance band of thionine at 600 nm. Under the optimum conditions, the proposed ...
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