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RISCarbon paste ion selective electrode based on 15-benzo crown-5 and carbon nanotubes for determination of silver
A carbon paste ion selective electrode based on benzo15-crown-5 as an ionophore is proposed for determination of silver in real samples. Important factors such as the amounts of benzo15-crown-5, carbon nanotube as modifier, ...
Construction of novel fluoride potentiometric sensors based on conducting polypyrrole doped with different anions
Introduction
Fluoride (F-) is an important and reactive anion, present in water, mineral, many plants, air and food. Obviously, this element is an important tool in the prevention of tooth decay and caries [1], but ...
Determination of Iron in Water Samples by Directly Suspended droplet Microextraction Combined with UV–Vis Spectrophotometry
Iron (Fe) is widely distributed in the nature and is one of the most important elements in environmental and biological systems [1]. Dissolved Fe in the natural water is found as both Fe(II) and Fe(III) forms with ...
Improvement in electrochemical hydride generation atomic absorption spectrometric determination of thallium by organic solvents
Thallium has been found to be an environmentally hazardous element because of its toxic effects [1]. It is, therefore, important to detect and determine thallium in a wide range of matrices. Since the total concentration ...
Determination of Thallium by Electrochemical Hydride Generation (ECHG) Atomic Absorption Spectroscopy
The determination of thallium in environmental and biological samples is of great interest because of high toxicity of its compounds[1]. Vapour generation techniques in atomic absorption spectrometry (cold vapour or hydride ...
Fabrication of an Y3+-PVC Membrane Sensor Based on Dicyclohexyl-18-Crown-6 for Determination Fluoride Ion
In this research, construction and performance characteristics of a PVC membrane electrode based on dicylohexyl-18-crown-6 (DCH18C6) as a neutral ionophore have been described. The influence of the membrane composition on ...
Determination of Non-Steroidal, Analgesic, Anti-Inflammatory Drugs (NSAIDs) in Environmental Water Samples Using Liquid-Phase Microextraction Method (LPME) Prior to UV-Vis Spectrophotometer
The main aim of this research is to develop the preconcentration and sample preparation
method, based on two liquid phase microextraction procedure prior to UV-Vis spectrophotometer.
The target compounds ...
Application of dicyclohexyl-18- crown-6 in Construction of a Selective Membrane Electrochemical Sensor for Determination of Yttrium (III) in Environmental Sample
Rare earth elements (REE) have been used extensively in igneous, sedimentary, and metamorphic petrology to trace source of rocks and minerals during crustal and mantle evolution [1].
The trace amounts of such metals ...
Vortex-assisted liquid-liquid microextraction prior to UV-Vis spectrophotometry for determination of sulfide using methylene blue method
Reduced sulfur (sulfide) compounds occur naturally in the environment and can be produced under anaerobic conditions in industrial processes [1]. Sulfide attacks metals and concrete, and causes corrosion on pipe walls [2]. ...
Design of a Disposable Solid State Potentiometric Sensor for Codeine Content Control in Pharmaceutical Preparations
In the present research, a novel and simple disposable solid state potentiometric sensor is proposed
and used for determination of codeine in pharmaceutical samples. The sensing membrane which
contains ...