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A modified thiocyanate method without extraction by using rhodamine 6G as a secondary ligand was developed. Molybdenum in 1.0x10 -2 M HCl, after the addition of ascorbic acid, was heated for 10min in a 90 o C water bath for reduction. Suitable amounts of glycerine, Triton X-100, rhodamine 6G solutions and 2+1 (v/v) 9M H 2 SO 4 +3M KHSO 4 were added in this...
A simple indirect spectrophotometric method for the determination of cyanide, based on the oxidation of the cyanide with chlorine (Cl 2 ) is described. The residual chlorine is determined by the color reaction with o-tolidine (3,3'-dimethylbenzidine). The maximum absorbance for Cl 2 is at 437 nm. A linear calibration graph (0-4.0x10 -5 M CN - ) is obtained under...
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