Quantification of Ziram Fungicide Using Rhodamine-B Dye in Agricultural Samples

A Sensitive Spectrophotometric method on the basis of effervesces releases CS2 gas and decolouration of rhodamine-B dye is illustrated for persistence of Ziram fungicide; it librates CS2 in acid medium of hydrolysis. This CS2 was absorbed in ethanolic solution of sodium hydroxide. The xanthate was thereafter prepared with potassium iodated and N-chlorosuccinimide, during the time free iodine is discharged. Librated iodine selectively oxidized rhodamine-B dye as a result of this pink colour of rhodamine-B dye is decolourise quantitatively. Its maximum absorbance (λmax) obtained at 545nm. Molar absorptivity of Ziram solution 0.175lmol-1cm-1 and Sandal’s sensitivity of Ziram solution 1.746×10-3 µg cm-2 were obtained. The analytical parameters were analysis of the experimental results indicates that the proposed method is precise and accurate. The proposed method is freed obstacle of other ions and fungicides. The trust ability of the method was settled by parallel persistence versus reported method. The proposed method has been satisfactory applied to the persistence of Ziram fungicide in several agricultural sampling.