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Li    Ma

4865 Avocet Dr.
Norcross, GA 30092
Voice/Fax: 770-209-9298
Visa Status: Permanent Resident

PROFESSIONAL OBJECTIVE

Analytical chemist position emphasizing research, methods development and
routine analysis utilizing HPLC, mass spectrometer, GC/MS and related
techniques.

EDUCATION

Ph.D. Analytical Chemistry, Emory University, Dec., 1996 (expected).
      GPA:3.75/4.0
      Dissertation title: Cloud-Point Extraction of Analytes Related to
      Human Health Problems.
M.S,  Physical Chemistry,  Emory University, 1994.  GPA: 3.73/4.0.
M.S,  Industrial Catalysis,  Beijing Institute of Chemical Technology,
      1987. GPA: 3.83/4.0
B.S,  Polymer Chemistry, Jilin University, 1982. GPA: 3.67/4.0

EXPERIENCE

 09/93 -- present
   Graduate Student and Research Assistant , Division of Environmental
   Health Laboratory Sciences, U.S. Centers for Disease Control and
   Prevention(CDC), Atlanta, Georgia
   -  Developed cloud point extraction technique for determining PAHs,
      PCBs, Dioxins, Vitamins A and E in human serum, and phenols in urine
      with high performance liquid chromatography(HPLC) and GC/MS.
   -  Serum Direct Injection for analysis of PAHs using HPLC.
   -  Performed trace analysis of environmental pollutants, including PCB,
      PAH(Polycyclic aromatic hydrocarbons) and pesticides, in human serum
      with solid phase extraction(SPE)/supercritical fluid extraction(SFE)
      and gas chromatography/mass spectrometer(GC/MS).
  -   Developed a convenient method to synthesize a mixture of 13C12
      PCBs (Polychlorinated biphenyls) for isotope dilution mass 
      spectrometry.

05/92 -- 09/93
   Graduate Student and Research Assistant , Department of Chemistry,
   Emory University
   -  Studied the behavior of CN-containing species on semiconductor
      surfaces, including Si(100) and Si(111), by using HREELS, UPS and 
      XPS.
   -  Investigated laser-assisted chemical vapor deposition of InN on
      Si(100) with XPS, UPS, MS and SEM.
   -  Studied unimolecular ion decomposition dynamics in gas-phase using
      VG 70-S mass spectrometer.

05/87 -- 08/91
   Lecturer , Department of Applied Chemistry
   Beijing Institute of Chemical Technology, Beijing,
   China.
   -  Studied the characteristics of catalysts for F-T synthesis and the
      production of C1 -- C6 alcohols with gas chromatography(GC).
   -  Supervised senior students' research projects.
   -  Instructed Experimental Techniques of Catalysis at graduate student
      level.
   -  Instructed undergraduate students' Physical Chemistry Experiments.

08/82 -- 08/84
   Analytical Chemist , Baotou Iron and Steel Institute, Baotou, China.
   -  Performed a wide range of composition analysis, including Si, P, Mn,
      Ni, and Cr, in iron and steel samples.

SUMMARY OF EXPERTISE

Mass spectrometers used: VG 70-S (two-sector, forward-geometry)
GC/MS used:  Finnigan 2000  series.
Chromatography:  HPLC, Waters 600E system controller, Model 994
programmable photodiode array detector, Model 490E programmable
multiwavelength detector, model 470 scanning fluorescence detector, model
717 plus autosampler and Millennium 2010 Chromatography Manager.
Beckman 126 Solvent Module, 168 UV detector and GOLD Nouveau software.
Surface Analysis:  High-resolution electron energy loss spectroscopy
(HREELS), ultraviolet photoelectron spectroscopy (UPS), and X-ray
photoelectron spectroscopy (XPS).
Sample preparation techniques: Solid phase extraction (SPE) and
supercritical fluid extraction (SFE). Suprex MPS 225 SFE/SFC.
Computer: Programming in FORTRAN language, SAS, and PC's.

HONORS
   Best Graduate Student Award, Beijing Institute of Chemical Technology,
   1985.

REFERENCES  Available upon request.

PUBLICATIONS & PRESENTATIONS
1. Sirimanne, S.R.; Ma, L.;  Barr, J.R. and Patterson Jr., D.G, Anal.
   Chem. 1996, 68, 1556-60.
2. Bu, Y.; Ma, L.; Lin, M.C., J. Phys. Chem. 1995, 99, 1046-1051.
3. Bu, Y.; Ma, L.; Lin, M.C., J. Phys. Chem. 1993, 97, 7081-7087.
4. Bu, Y.; Ma, L.; Lin, M.C., J. Phys. Chem. 1993, 97, 11797-11801.
5. Bu, Y.; Ma, L.; Lin, M.C., J. Vac. Sci. Technol. 1993, A 11, 2931-2937.
6. Ma, L.; Sirimanne, S. R.; Justice Jr., J.B.; Patterson Jr., D.G.
   Cloud-Point Extraction and High-Performance Liquid Chromatographic
   Analysis of Polycyclic Aromatic Hydrocarbons in Human Serum with
   Fluorescence Detection, 212th ACS National Meeting, Orlando, FL, 1996.
7. Ma, L.; Sirimanne, S. R.; Justice Jr., J.B.; Turner, W.; Patterson Jr.,
   D.G. Application of Statistical Experimental Design and Optimization of
   the Cloud-Point Extraction of Vitamins A and E from Human Blood,
   Pittcon'96, 487P, Chicago, IL, 1996.
8. Ma, L.; Sirimanne, S. R.; Justice Jr., J.B.; Patterson Jr., D.G.
   Quantification of Vitamins A and E in Human Blood by Cloud-Point
   Extraction/High-Performance Liquid Chromatography,  Pittcon'96, 488P,
   Chicago, IL, 1996.
9. Sirimanne, S. R.; Ma, L.; McClure, P. C.; Barr, J. R. and Patterson
   Jr., D. G. Analysis of PAHs in Human serum Using Cloud-Point Extraction
   and LC/MS, the 43rd ASMS conference on Mass Spectrometry and Allied
   Topics, TPD 140, Atlanta, GA, 1995.