ANALYSIS OF NATURALLY OCCURRING WATERS FOR TOXIC METALS

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dc.contributor.authorPAUL, UKO ANYOGO
dc.date.accessioned2015-04-20T07:35:43Z
dc.date.available2015-04-20T07:35:43Z
dc.date.issued2015-04-20
dc.descriptionA THESIS SUBMITTED IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE AWARD OF MASTER OF SCIENCE IN ANALYTICAL CHEMISTRY BY MR PAUL UKO ANYOGO B.Sc (Hons.) CHEMISTRY DEPARTMENT OF CHEMISTRY AHMADU BELLO UNIVERSITY ZARIAen_US
dc.description.abstractc metals. The metals are cadmium, cobalt, copper, lead manganese and zinc. The analytical technique used here is a combination of methods recommended by APHA-AWWA-WPCF1 and Reynolds and Aldous.2 The samples were acidified with 5.0cm3 conc. HNO3 per litre of sample, immediately after collection. At the time of analysis, they were acidified with 1:1 redistilled HC1 heated for a given time on a steambath, cooled and filtered. The analysis was done in two parts. In each case, 100.0 cm3 of samples were used. In the first part, the metal ions were chelated with APDC and extracted into MIBK at a given pH. The organic extracts were aspirated into an air-acetylene flame in AAS at the resonance wavelength of the metal. Already, analytical curves for the metals were prepared by extracting each metal from a solution of known concentration, determining their absorbances in AAS and plotting the same against concentrations. From these standard curves, the concentration of each metal in the water samples were determined, In the second part of that analysis, the same metals were chelated with sodium diethyldithiocarbamate and extracted into chloroform. The absorbances of the extracts were determined with a UV spectrophotometer and the concentrations were again determined from their Calibration Curves. The results of these methods are a measure of the extractable metals in the water samples. Finally, the two methods of analysis are compared.en_US
dc.identifier.urihttp://hdl.handle.net/123456789/6399
dc.language.isoenen_US
dc.subjectANALYSIS,en_US
dc.subjectNATURALLY,en_US
dc.subjectOCCURRING,en_US
dc.subjectWATERS F,en_US
dc.subjectTOXIC METALSen_US
dc.titleANALYSIS OF NATURALLY OCCURRING WATERS FOR TOXIC METALSen_US
dc.typeThesisen_US
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