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Addis Ababa University Libraries Electronic Thesis and Dissertations: AAU-ETD! >
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http://hdl.handle.net/123456789/3402
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| Title: | Stripping square wave voltammetry for the determination of uric acid in human urine using Fe3+ doped zeolite graphite powder composite modified glassy carbon electrode. |
| Authors: | Tadesse, G/giyorgis |
| Advisors: | Merid Tessema(Dr.)
Shimelis Admassie(Dr.) |
| Keywords: | Zeolite NaY (zeolite
Iron doped zeolite
undoped zeolite
stripping SWV
chemically modified electrode (CME)
uric acid (UA)
human urine
polystyrene
dichloroethane
tetrahydrofuran (THF) |
| Copyright: | Jun-2011 |
| Date Added: | 17-Jul-2012 |
| Publisher: | Addis Ababa University |
| Abstract: | A novel stripping square wave voltammetric method has been developed for the determination
of uric acid (UA) in untreated human urine using iron (III) doped zeolite/graphite powder
composite modified GCE. The synergetic effects of the catalytic role of Fe3+, larger surface area
of zeolite, and higher conductivity of graphite powder account for the anodic peak current
obtained at much lower positive oxidation potential than at the bare GCE. The proposed method
is simple, rapid, has excellent selectivity, reproducible and sensitive in the linear range of 2–80
μM UA with a detection limit of 2.3 x 10-7 mol L-1. The developed method enabled to achieve
recoveries ranging from 90.98 to 106.77% of spiked standard UA from untreated human urine
with a standard error of less than unity. |
| Description: | A thesis submitted to school of graduate studies of Addis Ababa
University in partial fulfillment of the requirements for the Degree
Of Master of Science in Chemistry |
| URI: | http://hdl.handle.net/123456789/3402 |
| Appears in: | Thesis - Chemistry
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