A sensitive voltammetric method for the determination of diazinon insecticide


Erdogdu G.

JOURNAL OF ANALYTICAL CHEMISTRY, cilt.58, ss.569-572, 2003 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 58 Konu: 6
  • Basım Tarihi: 2003
  • Doi Numarası: 10.1023/a:1024120320359
  • Dergi Adı: JOURNAL OF ANALYTICAL CHEMISTRY
  • Sayfa Sayıları: ss.569-572

Özet

A sensitive voltammetric method is developed for the determination of diazinon, an organophosphorus pesticide, using a Nafion(R)-coated glassy carbon electrode as an enrichment film. The analysis of diazinon in aqueous solutions using sensitive instrumental methods has gained importance. Investigation of the electrochemical behavior of diazinon on a Nafion(R)-coated glassy carbon electrode reveals the presence of a specific oxidation peak of analytical significance. The experimental parameters, such as pH, film thickness, pre-concentration potential, preconcentration time, and square-wave voltammetric parameters were optimized. Using this method, a linear calibration curve for diazinon was obtained up to 5 muM range in pH 1 citrate buffer solution with a detection limit (SIN = 3) of 75 nM.