Differential pulse adsorptive stripping voltammetric determination of simeton in its formulations and vegetables

  • Environ Monit Assess. 2010 Nov;170(1-4):59-63. doi: 10.1007/s10661-009-1214-0.
N Y Sreedhar  1 ,  M Sankara Nayak ,  K N Shashi Kumar ,  K Srinivasa Prasad ,  P Reddy Prasad
Affiliations
  • 1. Department of Chemistry, S.V. University, Tirupati, 517502, Andhra Pradesh, India. [email protected]
PMID: 19888661 DOI: 10.1007/s10661-009-1214-0
Abstract

A sensitive adsorptive stripping voltammetric method for the determination of simeton with universal buffer solution has been described. The method was based on the adsorption accumulation of simeton at a hanging mercury drop electrode. The overall reduction process is under controlled diffusion. The adsorptive peak was observed at -0.8 V vs SCE in acidic solution 2<pH<6. The peak response was characterized with respect to pH, accumulation potential, time, and scan rate. The calibration plot was found to be linear from 1.13×10(-5) to 3.5×10(-8) M with a limit of detection of 2.0×10(-8) M. Finally, the method has been applied for the determination of simeton in its formulations and vegetable samples.

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