58 research outputs found
Silica gel/gold nanoparticles/(NS)2 ligand nanoporous platform-modified ionic liquid carbon paste electrode for potentiometric ultratrace assessment of Ag(I)
Potentiometric determination of monohydrogen arsenate by zeolite-modified carbon-paste electrode
Proton NMR study of the stoichiometry, stability and thermodynamics of complexation of Ag+ ion with octathia-24-crown-8 in binary dimethylsulfoxide–nitrobenzene mixtures
Gold Nanoparticles–Fe3O4 Beads/multiwalled Carbon Nanotubes Modified Glassy Carbon Electrode as a Sensing Platform for the Electrocatalytic Determination of Loratadine in Biological Fluids
Application of Ion Exchange, Solvent Extraction, and Ion-Imprinted Methods for Separation of 203Pb
Sol–gel processed pyridinium ionic liquid-modified silica as a new sorbent for separation and quantification of iron in water samples
Magnetized ion-imprinted polymer-coated nano-particles for selective separation and trace detection of 203Pb using gamma-ray spectrometry
A novel spectrophotometric method for the determination of copper ion by using a salophen ligand, N,N'-disalicylidene-2,3-diaminopyridine
WOS: 000411700000016this study, a novel, selective and highly sensitive spectrophotometric method has been developed for the determination of copper(II) by using a new chromogenic reagent N,N'-bissalicylidene-2,3-diaminopyridine (H2IF). The absorbance was measured at lambda max = 414 nm. Experimental conditions were optimized, and Beer's law was observed in the concentration range of 6.35-318 mu g L-1 of copper. The molar absorptivity of the complex was calculated and found to be 1.46 x 10(5) L mol(-1) cm(-1). The detection and quantification limits were calculated and found to be 6.38 mu g L-1 and 21.27 mu g L-1, respectively. The calculated relative standard deviation (n = 5) was 0.62% for a standard solution including 63.5 mu g L-1 copper( II). The interference effects of the common ions have been studied and the statistical assessment of the obtained results is presented. The developed method was applied for the determination of copper in water samples. The reliability and accuracy of the developed method was proven by the analysis of a waste water standard. (C) 2017 The Authors. Production and hosting by Elsevier B.V. on behalf of Taibah University
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