Differential pulse anodic voltammetric determination of lithium ions in pharmaceutical formulations using a carbon paste electrode modified with spinel-type manganese oxide

2003 ◽  
Vol 31 (3) ◽  
pp. 537-543 ◽  
Author(s):  
Marcos F.S. Teixeira ◽  
Fernando C. Moraes ◽  
Éder T.G. Cavalheiro ◽  
Nerilso Bocchi
Keyword(s):  
Manganese Oxide ◽  
Carbon Paste Electrode ◽  
Pharmaceutical Formulations ◽  
Differential Pulse ◽  
Voltammetric Determination ◽  
Carbon Paste ◽  
Lithium Ions ◽  
Spinel Type ◽  
Paste Electrode

scholarly journals Voltammetric determination of the neonicotinoid insecticide thiamethoxam using a tricresyl phosphate-based carbon paste electrode

2010 ◽  
Vol 75 (5) ◽  
pp. 681-687 ◽  
Author(s):  
Zsigmond Papp ◽  
Valéria Guzsvány ◽  
Szymon Kubiak ◽  
Andrzej Bobrowski ◽  
Luka Bjelica
Keyword(s):  
Carbon Paste Electrode ◽  
Analytical Signal ◽  
Differential Pulse ◽  
Voltammetric Determination ◽  
Carbon Paste ◽  
Tricresyl Phosphate ◽  
Relative Standard ◽  
Neonicotinoid Insecticide ◽  
Paste Electrode

The objective of the work was to investigate the possibility of using a tricresyl phosphate-based carbon paste electrode for the direct voltammetric determination of the neonicotinoid insecticide thiamethoxam. The analyte was determined by differential pulse voltammetry in Britton-Robinson buffer pH 7.0 in the concentration range of 3.72 - 41.5 ?g mL-1. The reproducibility of the analytical signal at the 7.29 ?g mL-1 level was characterized by a relative standard deviation of 1.3 %. The applicability of the developed method was evaluated by determining thiamethoxam in a river water sample and a commercial formulation Actara 25 WG.

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