Faculty of Natural and Agricultural Sciences
School of Physical Sciences
Department of Chemistry
Process Science - Research Output
Research articles in refereed specialist journals:
Stefan R-I, van Staden JF, Aboul-Enein HY: 2003. Estimation of uncertainties for the application of electrochemical sensors in clinical analysis. Accreditation and Quality Assurance, 8 (2), pp 86-89.
Fletcher PJ, van Staden JF: 2003. Determination of ethanol in distilled liquors using sequential injection analysis with spectrophotometric detection. Analytica Chimica Acta, 499 (1-2), pp 123-128.
van Staden JF, Mulaudzi LV, Stefan R-I: 2003. Speciation of Mn(II) and Mn(VII) by on-line spectrophotometric sequential injection analysis. Analytica Chimica Acta, 499 (1-2), pp 129-137.
Fletcher PJ, van Staden JF: 2003. Determination of carbonate and hydrogencarbonate by titration using sequential injection analysis. Analytica Chimica Acta, 485, pp 187-194.
van Staden JF, Mulaudzi LV, Stefan R-I: 2003. On-line speciation of bromine and bromide by using sequential injection analysis with spectrophotometric detection. Analytical and Bioanalytical Chemistry, 375 (8), pp 1074-1082.
Stefan R-I, Bairu SG, van Staden JF: 2003. Diamond paste-based electrodes for determination of Cr(III) in pharmaceutical compounds. Analytical Bioanalytical Chemistry, 376 (6), pp 844-847.
Stefan R-I, Bairu SG: 2003. Monocrystalline diamond paste-based electrodes and their applications for the determination of Fe(II) in vitamins. Analytical Chemistry, 75 (20) / Oct, pp 5394-5398.
Stefan R-I, Nejem RM: 2003. Diamond paste based amperometric biosensors for the determination of L- and D-pipecolic acid. Analytical Letters Part A - Chemical Analysis, 36 (12), pp 2639-2648.
Stefan R-I, Bokretsion RG, van Staden JF, Aboul-Enein HY: 2003. Determination of L- and D-enantiomers of carnitine using amperometric biosensors. Analytical Letters Part A - Chemical Analysis, 36 (6), pp 1091-1102.
Stefan R-I, Bairu SG, van Staden JF: 2003. Diamond paste based electrodes for the determination of iodide in vitamins and table salt. Analytical Letters Part A - Chemical Analysis, 36 (8), pp 1493-1500.
Stefan R-I, Bokretsion RG, van Staden JF, Aboul-Enein HY: 2003. Simultaneous determination of L- and D-methotrexate using a sequential injection analysis/amperometric biosensors system. Biosensors & Bioelectronics, 19 (3), pp 261-267.
Potgieter JH, Potgieter SS, McCrindle RI, Strydom CA: 2003. An investigation into the effect of various chemical and physical treatments of a South African phosphogypsym to render it suitable as a set retarder for cement. Cement and Concrete Research, 33, pp 1223-1227.
Stefan R-I, Stefan I, van Staden JF: 2003. Immunosensors in clinical diagnostics. Clinical Laboratory International, 27 (2), pp 16-19.
Bairu SG, Stefan R-I, van Staden JF: 2003. Polycrystalline diamond based electrochemical sensors and their applications in inorganic and organic analysis. Critical Reviews in Analytical Chemistry, 33 (2), pp 145-153.
Stefan R-I, Bairu SG, van Staden JF: 2003. Determination of Fe(III) using diamond paste based electrodes. Instrumentation Science and Technology, 31 (4), pp 411-416.
Stefan R-I, Bairu SG: 2003. Diamond paste based electrodes for the determination of Cr(VI) at trace levels. Instrumentation Science and Technology, 31 (3), pp 261-267.
Stefan R-I, Bokretsion RG: 2003. Determination of creatine and creatinine using a diamond paste based electrode. Instrumentation Science and Technology, 31 (2), pp 183-188.
Archer M, McCrindle RI, Rohwer ER: 2003. Analysis of cobalt, tantalum, titanium, vanadium and chromium in tungsten carbide by industively coupled plasma-optical emission spectrometry. Journal of Analytical Atomic Spectrometry, 18, pp 1493-1496.
Stefan R-I, Bokretsion RG: 2003. Diamond paste based immunosensor for the determination of azidothymidine. Journal of Immunoassay & Immunochemistry, 24 (3), pp 319-324.
Stefan R-I, Bokretsion RG, van Staden JF, Aboul-Enein HY: 2003. Simultaneous determination of L- and D-carnitine using a sequential injection analysis/amperometric biosensors system. Journal of Pharmaceutical and Biomedical Analysis, 33 (2), pp 323-328.
Botha A, Strydom CA: 2003. DTA and FT-IR analysis of the rehydration of basic magnesium carbonate. Journal of Thermal Analysis and Calorimetry, 71, pp 987-995.
Potgieter SS, Strydom CA, Gheevarghese O: 2003. The effect of ultrasonic energy on lime slaking. Minerals Engineering, 16, pp 767-770.
Stefan R-I, Bokretsion RG, van Staden JF, Aboul-Enein HY: 2003. Biosensors for the determination of ortho-acetyl-L-carnitine. Their utilization as detectors in a sequential injection analysis system. Preparative Biochemistry & Biotechnology, 33 (3), pp 163-172.
Stefan R-I: 2003. New enantioselective, potentiometric membrane electrodes based on C70 fullerenes as chiral selectors. Sensor Letters, 1 (1), pp 71-74.
Stefan R-I, Bala C, Aboul-Enein HY: 2003. Biosensor for the enantioselective analysis ofS-captopril. Sensors and Actuators B-Chemical, 92 (1-2), pp 228-231.
Stefan R-I, Nejem RM, van Staden JF, Aboul-Enein HY: 2003. Biosensors for the enantioselective analysis of pipecolic acid. Sensors and Actuators B-Chemical, 94 (3), pp 271-275.
Stefan R-I, Bokretsion RG, van Staden JF, Aboul-Enein HY: 2003. Immunosensor for the determination of azidothymidine. Its utilization as detector in a sequential injection analysis system. Talanta, 59 (5), pp 883-887.
Stefan R-I, Bokretsion RG, van Staden JF, Aboul-Enein HY: 2003. Simultaneous determination of creatine and creatinine using amperometric biosensors. Talanta, 60, pp 1223-1228.
Stefan R-I, Bokretsion RG, van Staden JF, Aboul-Enein HY: 2003. Determination of L- and D-enantiomers of methotrexate using amperometric biosensors. Talanta, 60 (5), pp 983-990.
Potgieter JH, Potgieter SS, Strydom CA, Gheevarghese O: 2003. The influence of various common ions on the slaking of some South African limes. Water SA, 29 (4), pp 433-436.
Papers in refereed, published conference proceedings:
Potgieter JH, Potgieter SS, Loubser M, Kearsley EP, Strydom CA, de Waal D, Paul SO: 2003. The use of fly ash to treat waste from the ferro-alloy industries. In Proceedings of the 11th International Congress on the Chemistry of Cement (ICCC - 2003) 'Cement's Contribution to the Development in the 21st Century', Cement and Concrete Institute, pp 2148-2155.
Kgobane BL, Morgan DL: 2003. The control of the anisostropy and texture of cokes prepared from coal solutions. In Proceedings of the Second International Conference of the African Materials Research Society. Building Partnerships for Excellence in Materials Research in Africa, University of the Witwatersrand, pp 81-82.
Research and technical/policy output for clients:
Rohwer ER, Muir D, Lee HK, Huang Y, Konoplev A, Koné TH, Tenorio JC, Osibanjo O, Yive RCK, Graham D, Nejeri BO: Technical Report: 2003. Advisory paper written by workgroup 2 at the 'UNEP Workshop to Develop a Global POPs Monitoring Programme to Support the Effectiveness Evaluation of the Stockholm Convention'. For: United Nations Environment Programme (UNEP), Geneva.
Selala MI, Phirwa S, Segoe N, Rohwer ER, Schoeman C: Science + Technology Transfer: 2003. Report to the Water Research Commission of South Africa: WRC Report No. 831/1/03 of April 2003: Development and implementation of gas and liquid chromatographic organic water profiles as a management tool; ISBN no. 1-77005-021-3. For: Water Research Commission of South Africa.
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