Showing papers in "Arabian Journal of Chemistry in 2011"

TL;DR: In this article, the authors reviewed the recent developments and technical applicability of various treatments for the removal of heavy metals from industrial wastewater and evaluated their advantages and limitations in application, including adsorption on new adsorbents, membrane filtration, electrodialysis, and photocatalysis.

TL;DR: In this article, a molecular as well as thermodynamic approach for the micellization process of association colloid pigments is presented. But the authors do not provide a detailed analysis of the mousellization procedure.

TL;DR: Chitosan flakes, extracted from prawns and labeo rohita scales, with high adsorption capacity were prepared after chemical treatment and were used to remove acid yellow dye from water.

TL;DR: In this paper, a four-component reaction of hydrazine hydrate or phenyl hydrazines, ethyl 3-alkyl-3-oxo propanoate, aldehydes and malononitrile has been achieved in the presence of nanosized magnesium oxide as a highly effective heterogeneous base catalyst.

TL;DR: In this article, the same humic fractions were investigated by the developed analytical methods CP/MAS 13 C NMR, IR and visible spectroscopy's; to evaluate the harmony of the different analytical methods used for characterization of humic materials and to recognize and evaluate the properties of Humic acid, fulvic acid and humin separated from the same source.

TL;DR: In this article, the inhibiting action of 2-mercapto benzimidazole (2MBI) on mild steel in 1.0 M HCl has been investigated using weight loss measurements and electrochemical techniques.

TL;DR: The synthesis and antimicrobial activity of 2,4-thiazolidinedione derivatives 5a–g and 6a-g showed high or moderate biological activity against tested microorganisms.

TL;DR: In this paper, the feasibility of using sugar cane bagasse (SCB) as a selective solid phase extractor for Fe(III) was introduced, and the order of metal uptake capacities in μmolg-1 for the extraction of six tested metal ions from aqueous solution using static technique is Fe (III)>Cu(II)>Pb(II).

TL;DR: In this paper, the efficiency of hexa methylene diamine tetra methyl-phosphonic acid (HMDTMP) as a corrosion inhibitor for carbon steel in 0.5 M HCl, has been determined by gravimetric and electrochemical measurements.

TL;DR: In this paper, aqueous solution of silver nitrate and polyvinyl alcohol was used to synthesize octahedral silver nano-plates and the colloid formed is dried on glass plates by simple dip-coating method to inhibit the growth of the particles and to analyze the samples.

TL;DR: A series of 2-oxo-azetidinyl-quinazolin-4(3H)-ones 5a-k have been synthesized from Schiff bases 4a−k as mentioned in this paper.

TL;DR: In this article, the in vitro antioxidant property and phytochemical constituents of the crude ethyl acetate and methanol extract of the three genders of carob tree barks (spontaneous male, spontaneous female, and grafted female) were evaluated.

TL;DR: In this article, the effects of water and alcohol concentration, enzyme loading and enzyme thermal stability in the transesterification reaction were investigated using the immobilized lipase Candida Rugosa (CR) within an activated carbon as support.

TL;DR: The biological activities of resveratrol are explained with the latest laboratory evidences towards its antioxidant effects and its antioxidant property is the most described one to attribute its diverse health beneficial effects.

TL;DR: It can be suggested that supplementation of the extracts of the different plants presented in this study was beneficial in modulating the alterations induced in kidney and heart under the toxic effects of AFB1.

TL;DR: In this article, a simple, rapid and accurate method is described for the simultaneous determination of ibuprofen (IB) and paracetamol (PA) in two components mixture and Cetofen tablets.

TL;DR: In this article, the authors showed that the grain size of cobalt oxalate is highly dependent on the nature of non-polar solvent used to initially synthesize the oxide rods.

TL;DR: In this paper, the rate of photocatalytic degradation of the dye was observed spectrophotometrically and it follows pseudo-first-order kinetics, and the rate determining parameters like, pH of the medium, concentration of the complex and dye, amount of H 2 O 2, and light intensity on the degradation process were studied in detail.

TL;DR: In this article, the effect of triphenyltin2-thiophene carboxylate (TTC) on the corrosion of steel in hydrochloric acid medium was studied using gravimetric, electrochemical polarisation and electrochemical impedance spectroscopy (EIS) measurements.

TL;DR: In this article, an attempt has been made to enhance the photocatalytic activity of zinc oxide semiconductor by coating it with extracts of natural pigments, chlorophyll and anthocyanin.

TL;DR: In this article, the inhibition effect of 2-carboxymethylthio-4-( p -methoxyphenyl)-6-oxo-1,6-dihy-dropyrimidine-5-carbonitrile (CPD) towards the corrosion of copper was studied in aerated stagnant 3.5% NaCl at 25°C using ac techniques include electrochemical frequency modulation and electrochemical impedance spectroscopy as well as potentiodynamic polarization measurements.

TL;DR: In this paper, the corrosion and corrosion inhibition of iron in HCl solutions in the absence and presence of pyrazole (PA) were investigated by potentiodynamic polarization and electrochemical impedance spectroscopy (EIS).

TL;DR: In this paper, aryl amines were coupled with 3-substituted 5-amino pyrazoles to produce a series of novel 3substitized 5amino-4-arylazopyrazoles.

TL;DR: In this paper, the authors investigated the kinetics and mechanism of Ag(I)-catalyzed oxidation of l -alanine by cerium (IV) in sulfuric acid media.

TL;DR: In this article, the inhibition effect of 1-methyl pyrazole (MPA) on the acidic corrosion of iron in 1.0 m HCl was studied at different concentrations by potentiodynamic polarization and electrochemical impedance spectroscopy, and EIS measurements.

TL;DR: In this article, the in situ -generated copper(II) complexes of three new tripodal ligands were examined for their catalytic activities and were found to catalyse the oxidation reaction of catechol to o -quinone with the atmospheric dioxygen.

TL;DR: In this article, 2-Mercapto-1-methylimidazole (MMI) has been evaluated as a corrosion inhibitor for cold rolled steel in aerated 2-M H 2 SO 4 by gravimetric method.

TL;DR: In this article, naked magnetic nanoparticles were synthesized by mixing and stirring two equivalents of iron(II) chloride tetrahydrate with three equivalents of Iron(III) chloride hexahydrate at room temperature.

TL;DR: This article has been retracted at the request of the Editor-in-Chief because of excessive self-citations of the author in various articles submitted to the journal.

TL;DR: This article has been retracted at the request of the Editor-in-Chief because of excessive self-citations of the author in various articles submitted to the journal.