Wajid Ali Khan

Abdul Wali Khan University Mardan · Department of Chemistry

In the present study, a newly designed microfluidic-chip device was used for the selective and simultaneous electromembtane extraction (EME) of drugs with different properties. For this purpose, atenolol (ATE), betaxolol (BET), and propranolol (PRO) were selected as model analytes with different properties such as hydrophobicity. The utilized micro...

Hollow-fiber liquid-phase microextraction (HF-LPME) and electromembrane extraction (EME) are miniaturized extraction techniques, and have been coupled with various analytical instruments for trace analysis of heavy metals, drugs and other organic compounds, in recent years. HF-LPME and EME provide high selectivity, efficient sample cleanup and enri...

In the last few years, nanomaterials are widely used sorbents for the extraction of heavy metals in food samples. The nanomaterials have a larger surface area and show high selectivity, fast adsorption capability, and high efficiency for food contaminants (heavy metals). Carbon nanomaterials (CNMs), magnetic nanoparticles (MNPs), nano-imprinted pol...

A new approach was developed for the simultaneous pre-concentration and determination of Ni (II) and Zn (II) in food samples. This method is based on ultrasound-assisted liquid-liquid micro extraction using hydrophobic deep eutectic solvent (DES) and 1,10-phenanthroline as chelating agent. The effect of several parameters, such as pH, selection and...

Polysaccharides are the most abundant long-chain carbohydrates found in food sources. Different types of polysaccharides such as starch, cellulose, bacterial cellulose, glycogen, chitin, agar, alginate, pectin, hyaluronic acid, etc. exist. The nontoxic, biocompatible, and biodegradable nature of polysaccharides make their materials suitable for man...

In this study, an extremely effective electromembrane extraction (EME) method was developed for the selective extraction of Cu(II) followed by Red-Green-Blue (RGB) detection. The effective parameters optimized for the extraction efficiency of EME include applied voltage, extraction time, supported liquid membrane (SLM) composition, pH of acceptor/d...

In the present study, an ultrasound-assisted deep eutectic solvent liquid–liquid microextraction (UA-DES-LLME) technique was developed for selective speciation, extraction, and preconcentration of chromium species followed by quantitation by flame atomic absorption spectrometry. The effective parameters of the applied method comprising pH, composit...

Iodine is very important element and has a key role in different fields of life so its analysis is of great significance. For the determination of iodine usually iodometric methods are used, but the range of this method is up to molar level. In the present work a simple, easy and economically feasible method is electroanalytical method is developed...