Aims and Scope
Recent Articles
Electrochemical Fabrication of Poly (niacin) Modified Graphite Paste Electrode and its Application for the Detection of Riboflavin
J. G. Manjunatha, C. Raril, N. Hareesha, M.M. Charithra, P.A. Pushpanjali, Girish Tigari, D.K Ravishankar, S. C. Mallappaji, Jayarame GowdaObjective:
A poly niacin (NN) modified graphite paste electrode was prepared through a simple electrochemical polymerization route for the determination of Riboflavin (RF)
Methods:
Electropolymerization technique was used for the preparation of a modified electrode. The electrochemical impedance spectroscopy (EIS) method was used to study the surface behaviors and conductivity of the bare and modified electrodes. Cyclic voltammetry (CV) and linear sweep voltammetry (LSV) were used to study the electrochemical behavior of RF using 0.2 M PBS of 7.5 pH.
Results:
Poly niacin modified graphite paste electrode (PNNMGPE) provides more affinity towards RF detection with high sensitivity and selectivity over bare graphite paste electrode. RF calibration curve was obtained by LSV between 5.0 µM to 65.0 µM with 0.782 µM limit of detection (LOD) and 2.7608 µM limit of quantification (LOQ), respectively. Selective analysis of RF in the presence of ascorbic acid (AA) and dopamine (DA) was performed at PNNMGPE by the LSV method.
Conclusion:
The developed PNNMGPE was tested for RF analysis in a multivitamin tablet with good results. Furthermore, the developed electrode shows good stability and reproducibility.
December 31, 2020
Articles
- August 24, 2020
Drying of Banana-Stepwise Effect in Drying Air Temperature on Drying Kinetics
July 06, 2020Poly (Adenine) Modified Graphene-Based Voltammetric Sensor for the Electrochemical Determination of Catechol, Hydroquinone and Resorcinol
April 22, 2020A Binary Mixture of Sesame And Castor Oil as an Ecofriendly Corrosion Inhibitor of Mild Steel In Crude Oil
April 21, 2020
Effect of Varying Drying Temperature on the Soluble Sugar and Nutritional Content of Banana
March 20, 2020
New Analytical and Numerical Solutions of the Particle Breakup Process
April 21, 2020
Review and Improvement of the Finite Moment Problem
Editor's Choice
Determination of Migration of Six Phthalate Esters in Plastic Toys by GC-MS/MS Coupled with Solid-Phase Extraction Using Cucurbit[n]urils as Adsorbent
Qing Lv, Haiyu Li, Zhijuan Wang, Hua Bai, Qing Zhang
Object:
This paper presents a method for the determination of migration of six phthalate esters in plastic toys based on gas chromatography-tandem mass spectrometry (GC-MS/MS) coupled with solid phase extraction using cucurbiturils (CB6-8) as adsorbent.
Method:
On the base of self-made migration device, toy samples were migrated for 10 min to 24 h in simulated saliva at 37 °C. The analytes were adsorbed by cucurbiturils SPE cartridges, eluted with ethyl acetate, then determined by GC-MS/MS and quantified by external standard method. The eluting solvents as well as the type and amount of the extraction materials were carefully optimized, then the reusability of the SPE cartridges was investigated. The limits of quantification (LOQs) ranged from 2.5 µg/L to 12.5 µg/L. Average recoveries of target analytes (spiked at three concentration levels) were in the range of 82.7% to 94.4%. Intraday repeatability and interday repeatability of the method varied from 2.3% to 6.6% and from 5.6% to 10.8%, respectively.
Conclusion:
The proposed method was finally used to explore the migration behavior of phthalate esters in commercial plastic toys.
October 31, 2017
Other Post
- October 12, 2017
Modeling and Simulation of Pressure Equalization Step Between a Packed Bed and an Empty Tank in Pressure Swing Adsorption Cycles
July 28, 2017
Depressurization System by Coiled Pipes Applied to a High Pressure Process: Experimental Results and Modeling
July 21, 2017
Flotation of Chromite as Pre-Treatment of Olivine Before Carbonation for CO2 Sequestration
October 28, 2016
Intensifying the Fermentation of Aspergillus oryzae in a Stirred Bioreactor Using Maxblend Impeller
June 03, 2016
Mass and Heat Transfer at Different Heat Exchange Surfaces and Their Suitability for Use in Thermal Desalination Plants
