Mohamed Shaheen

Great Lakes Institute for Environmental Research,
University of Windsor,
Windsor, Ontario, Canada N9B 3P4
ph. (519) 253-3000 ext. 4245
Fax (519) 971-3616
email: Mohamed

Supervisor(s): 
Dr. Brian Fryer

Hometown:    
Egypt

Education:
B.Sc, M.Sc. in Physics                                                                                           

Research Title:                                                                                                             
Fundamental Studies of Laser Interaction with Solids and Their Application to Laser Ablation Inductively Coupled Plasma Mass Spectrometry for Environmental Analysis

Research Summary:                                                                           
My work investigates in one part the effect of laser characteristics (wavelength, fluence, pulse width, repetition rate…), sample properties and transport gases on the analytical performance of Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA-ICP-MS). Application of LA-ICP-MS to sediment analysis is the other part of my research where combination of the high spatial resolution of the laser beam and careful preparation of sediment cores make it possible to study the distribution of elements of environmental concern.  This would help us to get an idea about short pollution episodes or seasonal patterns in the sediment deposition process.

Contributions to Research                                             

Papers

1. M. Shaheen, J. E. Gagnon, Z. Yanga and B. J. Fryer, Evaluation of the analytical performance of femtosecond laser ablation inductively coupled plasma mass spectrometry at 785 nm with glass reference materials, J. Anal. At. Spectrom., 2008, 23, 1610–1621.
2. Ghazy, R., S.A. Zim, M. Shaheen and F. El-Mekawey. “Energy transfer and excited state lifetime of some anthracene laser dyes,” Optics & Laser Technology 2004, 36, 463 – 469.
3. Ghazy,R., S.A. Azim, M. Shaheen and F. El-Mekawey. "Experimental studies on the determination of the dipole moments of some different laser dyes," Spectrochimica Acta A 2004, 60, 187–191.
4. Ghazy,R., S.A. Azim, M. Shaheen and F. El-Mekawey. "Experimental investigations on energy-transfer characteristics and performance of some laser dye mixtures," Optics & Laser Technology, 2002, 34, 99–105.
5. Ghazy,R., S.A. Azim, M. Shaheen and F. El-Mekawey.. "Investigations of energy transfer from some diolefinic laser dyes to Rhodamine 110," J. Photochemistry and Photobiology A:Chemistry 2000, 133, 185–188.

Conferences

Shaheen, M., J. E. Gagnon, B. J. Fryer, Z. Yang. 2007. "Elemental Analysis of SRMs by Femtosecond Laser Ablation Inductively Coupled Plasma Mass Spectrometry FS-LA-ICP-MS at 785 nm", European Winter Plasma Conference on Plasma Spectrochemistry, Taormina, Sicily, Italy, February 18-23, 2007.