Current Analytical Chemistry - Volume 11, Issue 2, 2015

This paper focuses the separation and voltammetric quantification of five significant compounds, such as tryptophan (Trp), paracetamol (APAP), uric acid (UAC), dopamine (DA) and ascorbic acid (AA), which may coexist in urine samples. The poly (Rhodamine B) / MWCNTs composite film was created on glassy carbon electrode by cyclic voltammetric technique. Electroanalytical behaviors of analytes at poly (Rhodamine B)/ MW Read More

A sensitive square wave voltammetric sensor for the quantification of bilirubin (BR) at the Nafion-electrochemically reduced graphene oxide (NF/ER-GO) hybrid composite modified conventional glassy carbon electrode was offered. The voltammetric oxidation conducts of bilirubin at the NF/ER-GO modified GC electrode were examined in acetone containing H&2SO4 as the supporting electrolyte. The electrochemical conduct of BR Read More

A new polyvinyl chloride (PVC) membrane Fe3+ ion selective electrode was constructed as a detector for the analysis Fe3+ using a home-made low-volume flow through cell. Optimum working conditions for the flow injection analysis (FIA) measurements were examined. In addition, under optimum conditions, potentiometric performance characteristics of the Fe3+ ion-selective electrode were investigated. Electrode had a Read More

Inhibition of corrosion of mild steel material in sulphuric acid medium has been tried with many synthetic and green inhibitors. Each inhibitor has its own merits and limitations. The present study aims at the synthesis of 8-Hydroxy Quinoline (8HQ) and Pyridine N-Oxide (PyNO) and the study of their inhibition behaviour on the corrosion of mild steel in 2 N sulphuric acid. The inhibition behaviour of the synthesised compounds was Read More

In this study, a capillary electrophoresis-mass spectrometry method was applied to the determination of isoflavones in samples with low content in these analytes, such as legumes. Sample stacking was used to enhance the sensitivity of the technique. Extraction of the analytes was carried out by a modified approach of QuEChERS (Quick, Easy, Cheap, Effective, Rugged and Safe) methodology, in which the extracts were injecte Read More

Sensitive, fast, and precise UPLC-MS/MS analytical method was validated for the identification and quantification of the anticoagulant rivaroxaban (RIV) in pharmaceutical dosage form, using a full factorial design for robustness assessment. Chromatographic separation was achieved in 3.5 min on a C18 Zorbax Eclipse Plus (rapid resolution HD) Agilent® column at isocratic elution mode. Ultra pure water adjusted to pH 4.0 with a Read More

Obesity, impaired glucose tolerance, and hypertension are often related and represent a major health burden in modern societies. Telmisartan (TEL) and Metformin HCl (MET) are widely used for the management of these commonly associated diseases. Few attempts have been made for the determination of TEL and MET in human plasma by liquid chromatography tandem mass spectrometry. This study describes the first Read More

A high throughput and sensitive analytical method for the comprehensive determination of 31 environmental contaminants (10 pharmaceuticals and personal care products, PPCPs; 8 benzotriazole UV stabilizers, BUVSs; and 13 organophosphorus flame retardants and plasticizers, PFRs) in aqueous sample using solid phase extraction (SPE) followed by ultra-high-performance liquid chromatography-electrospray ionization-ta Read More