Determination of Thallium at A Silver-Gold Alloy Electrode by Voltammetric Methods in Plant Material and Bottom Sediment Containing Cd and Pb

2007 ◽  
Vol 19 (5) ◽  
pp. 620-622 ◽  
Author(s):  
Beata Krasnodębska-Ostręga ◽  
Joanna Pałdyna ◽  
Jerzy Golimowski
Keyword(s):  
Bottom Sediment ◽  
Plant Material ◽  
Gold Alloy ◽  
Alloy Electrode ◽  
Voltammetric Methods

Contribution to the Optimization of a Gas Chromatographic Method by QbD Approach used for Analysis of Essential Oils from Salvia officinalis

2019 ◽  
Vol 70 (6) ◽  
pp. 2015-2020
Author(s):  
Silvia Robu ◽  
Aurelia Romila ◽  
Olimpia Dumitriu Buzia ◽  
Adrian Florin Spac ◽  
Camelia Diaconu ◽  
...  
Keyword(s):  
Essential Oil ◽  
Essential Oils ◽  
Plant Material ◽  
Mobile Phase ◽  
Chromatographic Method ◽  
Salvia Officinalis ◽  
Salvia Officinalis L ◽  
Gas Chromatographic Method

Numerous articles on Salvia officinalis L. have been published regarding the composition of their essential oil. The considerable variation found may be due to the quality of the plant material as well as to the methods used for analysis. A simple GC-MS method was developed and optimized in the QbD approach, for the determination of sage essential oils. The optimization of GC-MS analysis was performed using different mobile phase flows, injection volumes, split ratios and temperature programs. The optimized method proved to be simple and can be successfully applied for the determination of sage essential oils.

A Review of Voltammetric Methods for Determination of Dopamine Agonists

2020 ◽  
Vol 16 ◽  
Author(s):  
Fatma Ağin
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Biological Samples ◽  
Dopamine Agonists ◽  
Modified Electrodes ◽  
Nerve Cells ◽  
Electroanalytical Methods ◽  
Voltammetry Methods ◽  
Voltammetric Methods

Background: Dopamine agonists are useful drugs for the management of patients with Parkinson's disease in the early stages and in later stages of the disease. Parkinson's disease is a progressive neurodegenerative disease that primarily affects dopamine-producing nerve cells in the brain. They bind to dopamine receptors in nerve cells that regulate body movement and motor function. Electroanalytical methods are used in medicinal, clinical and pharmaceutical research. The voltammetry is one of the most commonly used electroanalytical methods. The aims of this review are to gather and discuss studies of voltammetric methods used in determination of dopamine agonists. Method: This review includes the use of various voltammetric methods for determination studies of dopamine agonists from pharmaceutical dosage forms and biological samples. These studies were examined in terms of used voltammetric method or methods, working electrode, buffer, pH and validation parameters. Results: Cabergoline, pramipexole, ropinirole have more studies, while bromocriptine and apomorphine have fewer studies in the literature. Differential pulse voltammetry and square wave voltammetry methods were the most applied methods for determination of dopamine agonist drugs from pharmaceuticals and biological samples. But, stripping, cyclic and lineer sweep voltammetry methods are less applied methods. In this studies, a lot of modified electrodes were developed and used to analyse of dopamine agonists. Conclusion: The voltammetric methods supply determination of therapeutic agents and/or their metabolites in clinical samples at extremely low concentrations without the necessity for the sample pre-treatment or time consuming extraction steps. Also the modified electrodes and validated voltammetric methods provide good stability, repeatability, reproducibility and high recovery for the analysis of the analyte.

scholarly journals THE COLORIMETRIC DETERMINATION OF FRUCTOSAN IN PLANT MATERIAL

1945 ◽  
Vol 157 (1) ◽  
pp. 161-167
Author(s):  
Willard L. McRary ◽  
Marion C. Slattery
Keyword(s):  
Plant Material ◽  
Colorimetric Determination

Analytical procedures for the determination of emerging organic contaminants in plant material: A review

2012 ◽  
Vol 722 ◽  
pp. 8-20 ◽  
Author(s):  
Víctor Matamoros ◽  
Diana Calderón-Preciado ◽  
Carmen Domínguez ◽  
Josep M. Bayona
Keyword(s):  
Organic Contaminants ◽  
Plant Material ◽  
Emerging Organic Contaminants ◽  
Analytical Procedures

The determination of copper in plant material

The Analyst ◽  
1953 ◽  
Vol 78 (931) ◽  
pp. 614 ◽  
Author(s):  
W. A. Forster
Keyword(s):  
Plant Material ◽  
Determination Of Copper
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