Current Analytical Chemistry - Volume 14, Issue 1, 2018

Background: Heavy metal contamination in natural environment is a serious problem due to increasing industrial activities. Since heavy metal ions are non-biodegradable, they are considered as a serious source to pollute the biosphere throughout the world and cause many healthy and physiological diseases. Therefore, it is imperative to develop simple, sensitive and selective methods for their detection. Methods: This r Read More

Background: The aim of this work was to develop a simple voltammetric method for quantitative determination of the veterinary drug carprofen. To the best of our knowledge there is no literature data on the voltammetric behavior and quantification of carprofen. Methods: Cyclic voltammetry (CV) on a glassy carbon electrode was employed to study the voltammetric behavior of carprofen by investigating the influence of the s Read More

Background: In the present work, two spectrometric methods for determination of formaldehyde were studied and compared. Methods and Results: Both methods are based on the catalytic effect of formaldehyde on the oxidation of Fluorescein natrium by sodium bromate in acid media. In the first method, the decrease in fluorescence intensity of Fluorescein natrium, measured at the emission wavelength of 510 nm (exci Read More

Background: A simple, precise, and inexpensive spectrofluorometric method was developed and validated for the analysis of primaquine (PQ) in tablet formulation. Objective: The objective was to develop low-cost spectrofluorimetric method for the determination of PQ in pharmaceutical formulation. Method: The procedure is based on the reaction of PQ with fluorescamine (FC) in alkaline medium to form fluorescent deriv Read More

Background: Mercury in various forms constitute a serious environmental pollutant. Its exposure is still considered a world related risk for individuals in numerous manufacturers. The Context and Purpose of the Study: Because of it serious hazardous effects to human health, there is strong need to develop new tools for mercury ion determination in clinical analysis and environmental monitoring. This investigation des Read More

Aim: A novel all solid-state contact PVC-membrane beryllium-selective electrode based on 4-hydroxybenzo-15-crown-5 ether as an ionophore is described. Results: The best performance was obtained with a membrane composition of 4% ionophore, 67% dioctyl sebacate (DOS), 28% poly(vinyl chloride) (PVC), and 1% potassium tetrakis (p-chloro)phenylborate (KTClPB) (w/w). The all solid-state contact PVCmembrane b Read More

Background: Graphite pencil drawn on paper electrode (PDP) is one of the low cost electrodes due to the good conductivity. Prussian blue (PB) has been widely used in sensors due to its high electrocatalytic activity toward H2O2 reduction at relatively low potential avoiding the interferences of other biological species. The major drawback of PB is their relatively low operational stability since hydroxyl ions causes the collapse of F Read More

Background: Meat fraud generated a huge outrage amongst customers in 2013 in Europe due to the horsemeat scandal. Portable and hand-held optical near-infrared (NIR, 4,00012,500 cm-1/800-2,500 nm) spectroscopy sensors are traded as promising fast, non-invasive and easy analytical tools that might be applicable at any independent place of inspection. In order to embrace the on-going trend towards instrumental mini Read More

Background: Danofloxacin is a synthetic antibacterial agent with broad spectrum antibacterial and antimycoplasmal activity which is widely used in aquaculture. Methods: A UPLC (Ultra Performance Liquid Chromatography) method was developed and validated for the determination of danofloxacin (Dano) and its major metabolite N-desmethyl danofloxacin (Ndesmethyl Dano) in muscle plus skin tissue of European seab Read More

Background: The high acute toxicity of the organophosphorus pesticides (OPs) imposes the development of simple, rapid, sensitive, and reasonably priced analytical methods for their in situ determination. The electrochemical biosensors-based techniques for OPs determination complete with these requirements. Objective: The objective of this work was the development of an amperometric biosensor with improved analytical Read More

Background: Dexamethasone has been used in ophthalmology for the treatment of different eye diseases and it is a powerful synthetic member of the glucocorticoid class of steroid medicament having anti-inflammatory and immunosuppressant characteristics. The aim of this study is to develop a rapid, sensitive and selective voltammetric method for its determination using polygylcine-multi walled carbon nanotubes (pol Read More