Analysis of Bendiocarb Residues by Spectrophotometry Employing 2,4-Dinitroaniline

V. Harikrishna, A. Hemasundaram and N. V. S. Naidu*

Department of Chemistry, Sri Venkateswara University, Tirupati- 517 502 (India)

The spectrophotometric determination of the carbamate pesticide bendiocarb is proposed. The pesticide is hydrolysed in alkaline medium to phenol, which is coupled with diazotized 2,4-dinitroaniline to form the azo dye with an absorbance maximum at 510 nm. Beer's law is obeyed in the range 2-20 μg/ml. The important analytical parameters and the optimum reaction conditions were evaluated. The method was applied to the determination of bendiocarb in spiked water and grain samples.

Bendiocarb determination; Spectrophotometer; Water; Grain samples