Dr. R`afat Mahmoud Mohamad Nejem

Dr. R`afat Mahmoud Mohamad Nejem

Assistant Professor
Al-Aqsa University, Palestine


Highest Degree
Ph.D. in Bioanalysis and Electroanalytical Chemistry from University of Pretoria, South Africa

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Biography

Dr. R`afat Mahmoud Mohamad Nejem is currently working as Assistant Professor at Al-Aqsa University, Palestine. He has completed his Ph.D. in Bioanalysis and Electroanalytical Chemistry from University of Pretoria, South Africa. He has published 27 research articles in journals contributed as author/co-author. Previously he was appointed as Dean Assistant and Lecturer at College of Education, Vice president, Dean and Lecturer at Al-Aqsa University. He also participated in number of conference and workshops.

Area of Interest:

Chemistry
100%
Analytical Chemistry
62%
Spectroscopy
90%
Applied Chemistry
75%
Biochemistry
55%

Selected Publications

  1. Stefan-van Staden, R.I., R.A.M. Nejem, J.F. van Staden and H.Y. Aboul-Enein, 2012. Determination of L-and D-fucose using amperometric electrodes based on diamond paste. Analyst, 137: 903-909.
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  2. Stefan-van Staden, R.I., J.F. van Staden and H.Y. Aboul-Enein, 2012. Amperometric biosensor based on diamond paste for the enantioanalysis of l-lysine. Biosensors Bioelectron., 35: 439-442.
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  3. Issa, M.M., R.I. Stefan-van Staden and H. Baroud, 2012. A novel ciprofloxacin selective membrane electrode. Curr. Pharm. Anal., 8: 334-338.
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  4. Issa, M.M., A.A. Shanab and N.T. Shaat, 2012. Kinetic simultaneous spectrophotometric determination of paracetamol and ibuprofen using H-point standard addition method. J. Chem. Pharm. Res., 4: 3535-3540.
  5. Stefan-van Staden, R.I., J.F. van Staden and H.Y. Aboul-Enein, 2011. Enantioselective potentiometric membrane electrodes based on antibiotics for the determination of L-and D-glyceric acids. Int. J. Electrochem., 10.4061/2011/427238.
    CrossRef  |  
  6. Nejem, R.M., N.M. El-Ashgar, M.M. Issa and M. Al-Slieby, 2009. Detection of some heavy metals due to sewage water diffusion into planted land. J. Environ. Sci. Technol., 2: 88-94.
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  7. Staden, R.I.S.V., R.A.M. Nejem, J.F.V. Staden and H.Y. Aboul-Enein, 2008. Sequential injection analysis utilizing amperometric biosensors as detectors for the simultaneous determination of L-and D-pipecolic acid. Instrum. Sci. Technol., 36: 355-366.
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  8. Nejem, R.M., M.M. Issa, N.S. El-Abadla, M. Al-Kholy and A.A. Saleh, 2008. Determination of diiodohydroxyquinoline using UV-visible and atomic absorption spectrometry. Asian J. Chem., 20: 3849-3856.
    Direct Link  |  
  9. Issa, M.M., R.M. Nejem, N.S. El-Abadla, M. Al-Kholy and A.A. Saleh, 2008. Novel atomic absorption spectrometric and rapid spectrophotometric methods for the quantitation of paracetamol in saliva: Application to pharmacokinetic studies. Indian J. Pharm. Sci., 70: 344-350.
    Direct Link  |  
  10. Nejem, R.M., M.M. Issa and N.T. Shaat, 2007. Paracetamol bioavailability study by means of salivary samples. Pak. J. Biol. Sci., 10: 1553-1555.
    CrossRef  |  PubMed  |  Direct Link  |  
  11. Issa, M.M., R.M. Najem, N.S. El-Abadla, M.K.A. El-Naby, A.A. Roshdy and Z.A. Kheiralla, 2007. Effects of paracetamol on the pharmacokinetics of ciprofloxacin in plasma using a microbiological assay. Clin. Drug Invest., 27: 463-467.
    PubMed  |  Direct Link  |  
  12. Issa, M.M., R.M. Najem, N.S. El-Abadla, M.K.A. El-Naby, A.A. Roshdy and Z.A. Kheiralla, 2007. A comparative pharmacokinetic study of two marketed ciprofloxacin tablet formulations using microbiological assay. Islamic Univ. J., 15: 189-198.
    Direct Link  |  
  13. Issa, M.M. and N.S. El-Abadla, 2006. Oral ciprofloxacin affects the pharmacokinetics of paracetamol in saliva. Clin. Drug Invest., 26: 223-226.
    CrossRef  |  Direct Link  |  
  14. Stefan, R.I., J.F. van Staden and H.Y. Aboul-Enein, 2005. Enantioanalysis of l-2-hydroxyglutaric acid in urine samples using enantioselective, potentiometric membrane electrodes based on maltodextrins. Talanta, 65: 437-440.
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  15. Stefan, R.I., J.F. van Staden and H.Y. Aboul-Enein, 2005. Determination of d-2-hydroxyglutaric acid in urine samples using enantioselective, potentiometric membrane electrodes based on antibiotics. Sensors Actuators B: Chem., 106: 791-795.
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  16. Stefan, R.I. and M.N. R'afat, 2005. Enantioanalysis of glyceric acid using enantioselective, potentiometric membrane electrodes: Applications for the diagnosis of PH II and d-glyceric acidemia/acidurias. Sensors Actuators B: Chem., 106: 736-740.
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  17. Stefan‐van Staden, R.I. and R.A.M. Nejem, 2005. Enantioselective, potentiometric membrane electrodes based on cyclodextrins for the assay of L‐and D‐2‐hydroxyglutaric acid. Anal. Lett., 38: 1847-1855.
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  18. Stefan, R.I., R.A.M. Nejem, J.F. van Staden and H.Y. Aboul‐Enein, 2004. New amperometric biosensors based on diamond paste for the assay of L‐and D‐pipecolic acids in serum samples. Preparative Biochem. Biotechnol., 34: 135-143.
    CrossRef  |  Direct Link  |  
  19. Stefan, R.I., R. Nejem, J. van Staden and H.Y. Aboul-Enein, 2004. Enantioselective, potentiometric membrane electrodes for the determination of L-pipecolic acid in serum. Electroanalysis, 16: 1730-1733.
    CrossRef  |  
  20. Stefan, R.I. and R.A.M. Nejem, 2004. Determination of L‐and D‐pipecolic acids using a diamond paste based electrode. Instrum. Sci. Technol., 32: 311-320.
    CrossRef  |  Direct Link  |  
  21. Stefan, R.I., J.F. van Staden and H.Y. Aboul-Enein, 2003. Biosensors for the enantioselective analysis of pipecolic acid. Sensors Actuators B: Chem., 94: 271-275.
    CrossRef  |  Direct Link  |  
  22. Sevilla, F. and R. Najem, 1992. An amperometric biosensor for dopamine based on mushroom tissue. Kimika, 8: 41-47.