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Molecularly imprinted polymers are a class of new functional materials that bring about selectivity to chemical sensors that is similar to that found in biological systems. The technique enables the creation of artificial recognition cavities within synthetic polymers that can be used in chemical...

A study has been made of the electrochemical behaviour of carrollite and chalcopyrite in the presence of xanthate and cyanide in aqueous solution. The investigations involved measurements of rest potentials and cyclic voltammetry of the sulphide minerals understudy. The results showed that the...

Diazapolyoxamacrobicyclic compounds form ex-ceptionally stable complexes in organic nonpolar solvents by enclosing certain cations in the tri-dimensional cavity. In the present work, by using hydrogen bonding properties of chloroform.Tetraoxa-1,10-diazabicyclo(8.5«5) eicosane(2.1.1),...

Current densities from 40O Am to 1000 Am were used to investigate the electrowinning of cobalt from sulfate solutiaiie. The cell used was a cylindrical beaker of 1000 ml capacity. Two lead anodes and one stainless steel cathode were used as - electrodes. The cathode was prepared electrolytically...

The purpose of the study was to find out if teachers of Chemistry were using learner-centered teaching strategies to large classes in order to enhance individual learning in selected Government High schools of Kitwe district on the Copperbelt Province in Zambia. The objectives of the study were...

In this work, four methods have been tried in an effort to find the best method for the determination of magnesium in dolomite, The determination of the magnesium content of dolomite, the raw material for the production of cement, is very important in that the quality of cement depends on its...

Several 5-0-toluene-p-sulphonyl and 5-iodo derivatives of «-and 3-ribofuranoses and «-xylofuranose have been prepared in order to study their reactions with sodium hydrogen carbonate in dimethyl sulphoxide. Similar reactions are known to convert acylic primary sulphonates and iodides to aldehydes...

This dissertation is focused on the spectroscopic characterization of cyclopentadienyl iron dicarbonyl ketone complexes 42. The ketone silver tetraflouroborate complexes 32 are initially prepared. The formation of 32 is supported by the enhanced solubility of the silver tetraflouroborate salt in...

Catechols are important precursors in the production of pharmaceuticals but they are associated with many problems such as their instability and susceptibility to oxidation and polymerisation. In order to avoid these problems, acylcatechols are used. However, disadvantages exist in the industrial...

ML3 coordination complexes where (M = V3+, Cr3+, Mn3+ and L = phenacetylidene -2, 2, 5, 5 - tetramethyl -3- imidazolidine -1- oxyl free radical ligand), have been synthesized. Vanadium(III) complex was prepared by refluxing a mixture of Vanadium Pentoxide and the ligand in ethanol containing...