- MeSH
- Antigens analysis diagnostic use chemistry MeSH
- DNA analysis diagnostic use chemistry MeSH
- Electrochemistry methods instrumentation utilization MeSH
- Carcinogens analysis diagnostic use chemistry MeSH
- Neurotransmitter Agents analysis diagnostic use chemistry MeSH
- Polarography methods instrumentation utilization MeSH
- Antibodies analysis diagnostic use chemistry MeSH
Annals of the New York Academy of Sciences, ISSN 0077-8923 Volume 473, Issue 1 (December 15, 1986)
xii, 560 stran : ilustrace ; 23 cm
- MeSH
- Behavior drug effects MeSH
- Electrochemistry MeSH
- Brain Chemistry MeSH
- Neurochemistry methods MeSH
- Perfusion MeSH
- Psychiatry MeSH
- Publication type
- Congress MeSH
- Collected Work MeSH
- Conspectus
- Psychologie
Electrochemical behavior of folic acid (FA) was studied by cyclic voltammetry. An irreversible oxidation peak of FA was obtained at +0,85 V (Ag/AgCl, pH 5.0). The current dependence for square-wave voltammetry was linear at 1.0·10–7 – 17·10–4 M FA with a low detection limit of 3.0·10–8 M and good repeatability (RSD 2.8 %, n = 10). The method was used in analysis of tablets with recoveries 101.5 and 103.1 % and the determined values outside the confidence interval P = 95 %. The method is an alternative to widely used chromatographic methods.
- Keywords
- square-wave voltampérometrie, borem dopovaná diamantová elektroda,
- MeSH
- Boron MeSH
- Electrochemical Techniques * methods statistics & numerical data methods statistics & numerical data MeSH
- Electrodes MeSH
- Folic Acid * analysis chemistry MeSH
- Pharmaceutical Preparations analysis chemistry MeSH
- Publication type
- Research Support, Non-U.S. Gov't MeSH
A new, rapid and very sensitive electrochemical method for the determination of a new pesticide clothianidin in tap and river water was developed. The electrochemical reduction and determination of clothianidin have been carried out at a hanging mercury drop electrode (HMDE) in various aqueous solutions in the pH range of 2–10 by cyclic voltammetry (CV) and cathodic stripping square wave voltammetry (SW CSV). The best results were obtained for the clothianidin determination by SW CSV method in 0.04 mol l–1 Britton Robinson buffer at pH 8.1. Various conditions of the procedure were checked. Elaborated electroanalytical procedure enable clothianidin determination in the concentration range of 2.0 × 10–8–9.9 × 10–7 mol l–1. The limit of detection (LOD) and limit of quantification (LOQ) were obtained as 2.00 × 10–9 and 2.36 × 10–8 mol l–1, respectively. Precision and accuracy of the developed method were checked by recovery studies in spiked tap and river water. The voltammetric determination has been validated using HPLC with UV detection.
