1. E. Grushka, S. Levin and C. Gilon, "The separation of amino acids on reversed phase columns as their copper II complexes" J. Chromatogr. , 235, 401-409, 1982.

2. E. Grushka and S. Levin, "Reversed Phase Liquid Chromatography Separation of Amino Acids with Aqueous Mobile Phase Containing Copper Ions and Alkyl Sulfonates.", Anal. Chem.,  57, 1830-1835, 1985.

3. S. Levin and E. Grushka, "System Peaks in Liquid Chromatography, Their Origin, Formation and Importance", Anal. Chem.,  58, 1602-1607, 1986.

4. E. Grushka and S. Levin, "Physico-Chemical Information from Peak Shape and Width in Liquid Chromatography",  in Quantitative Analysis Using Chromatographic Techniques.  E. Katz, Eds., J. Wiley & Sons: Vol. 1987:

5. S. Levin and E. Grushka, "Factors Controlling the Separation of Amino Acids in Isocratic Reversed Phase Liquid Chromatography", J. Chromatogr.,  384, 249-258, 1987.

6. S. Levin and E. Grushka, "Systems Peaks in Liquid Chromatography: Their Relation to the Adsorption Isotherm", Anal. Chem.,  59, 1157-1164, 1987.

7. S. Levin and E. Grushka, "Calculation of Capacity Ratios of the Mobile Phase Components and Column Void Volumes Through System Peaks", Anal. Chem.,  61, 2428-2433, 1989.

8. S. Levin, M.N. Myers and J.C. Giddings, "Continuous Separation of Proteins in Electrical Split-Flow Thin (SPLITT) cells With Equilibrium Operation", Sep. Sci. Technol.,  24, 1245-1258, 1989.

9. S. Levin, "Field-Flow Fractionation and Related Techniques for the Separation and Characterization of Particles, Colloids and Macromolecules", Israel J. Chem.,  30, 257-262, 1989.

10. S. Levin and S. Abu-Lafi, "Competition Between Phenylalanine and Acetic Acid in the Chromatographic Column as Indicated by Their Adsorption Isotherms", J. Chromatogr.,  517, 285-295, 1990.

11. S. Levin and J.C. Giddings, "Continuous Separation of Particles from Macromolecules in Split-Flow Thin (SPLITT) Cells", J. Chem. Tech. Biotechnol.,  50, 43-56, 1991.

12. S. Levin and S. Abu-Lafi, "Adsorption Isotherms of Phenylalanine in the Chromatographic Column Measured Simultaneously by System Peaks Analysis and Frontal Analysis", J. Chromatogr.,  556, 277-285, 1991.

13. S. Levin, "Biomedical Applications of Field-Flow Fractionation", Biomedical Chromatograph,  5, 133-137, 1991.

14. P.S. Williams, S. Levin, T. Lenczycki and J.C. Giddings, "Continuous SPLITT Fractionation Based on Diffusion Mechanism", Ind. Eng. Chem. Res.,  31, 2172-2181, 1992.

15. C.B. Fuh, S. Levin and J.C. Giddings, "Rapid Protein Diffusion Measurements Using Analytical SPLITT Fractionation. Application to Proteins", Anal. Biochem.,  208, 80-87, 1993.

16. S. Levin and G. Tawil, "Analytical SPLITT Fractionation in the Diffusion Mode, Operating as a Dialysis-like System Devoid of Membrane.  Application to Drug Carrying Liposomes", Anal. Chem.,  65, 2254-2261, 1993.

17. S. Levin, S. Abu-Lafi, J. Zahalka and R. Mechoulam, "Resolution of Chiral Cannabinoids on  Amylose tris (3,5-dimethylphenylcarbamate) Chiral Stationary Phase - Effects of Structural Features and Mobile Phase Additives", J. Chromatogr. A,   654, 53-64, 1993.

18. S. Levin and T. Bar-Shua, "A Membraneless Dynamic Dialysis Cell for the Rapid Measurement of Drug Entrapment and Release from Liposomes",  in Liposome Technology.  G. Gregoriadis, Eds., Vol. II, 1993: ch 17, 293-306.

19. S. Levin and S. Abu-Lafi, "The Role of Enantioselective Liquid Chromatographic Separations Using Chiral Stationary Phases in Pharmaceutical Analysis",  in Advances in Chromatography.  E. Grushka and  P. R. Brown, Eds., Marcel Dekker Inc.: NY,  Vol. 33, 1993: 233-266.

20. S. Abu-Lafi, M. Sterin and S. Levin, "The Role Of Hydroxyl Group In Chiral Recognition Of Cannabinoids By Carbamated Amylose", J. Chromatogr. A,  679, 47-58, 1994.

21. S. Levin, S. Abu-Lafi, M. Sterin and R. Mechoulam, "Structural Features Affecting Chiral Recognition and Separation of Chiral Bicyclic Monoterpenic Precursors of Cannabinoids On Amylose Based Chiral Stationary Phase", J. Chromatogr. A,  664, 159-167, 1994.

22. S. Levin, L. Stern, A. Ze'evi and M.Y. Levy, "Characterization of Sub Micron w/o Emulsions Using Sedimentation Field-Flow Fractionation (SdFFF) with Power Field Programming", Anal. Chem.,  66, 368-377, 1994.

23. S. Levin, E. Klausner and S. Muchtar, "Characterization of Sub Micron Pharmaceutical Emulsions Using Sedimentation Field-Flow Fractionation (SdFFF) with Power Field Programming", J. Pharm. Biomed. Anal.,  12 (9), 1115-1121, 1994.

24. S. Levin and G. Tawil, "Effect of Surfactants on the Diffusion Coefficients of Proteins, Measured by Analytical SPLITT Fractionation (ASF) in the Diffusion Mode", J. Pharm. Biomed. Anal.,  12, 499-507, 1994.

25. S. Levin, S. Abu-Lafi, S. Golshan-Shirazi and G. Guiochon, "The Use of System Peaks for the Determination of the Distribution of Resorcinol, Catechol and Phenol in Liquid Chromatography", J. Chromatogr.,  679,  213-229, 1994.

26. S. Levin and S. Abu-Lafi, "Experimental Studies of Competition Between Enantiomers in Chiral Liquid Chromatography Through Their System Peaks", Chirality,  6, 148-155, 1994.

27. A beginners guide to  Reversed phase HPLC   "Synthesis",   6, P  32 1994 (Hebrew).

28. The contribution of chiral chromatography to pharmacutical analysis, "Synthesis" 7, p 32,   1994 (Hebrew).

29. S. Levin, M. Sterin and S. Abu-Lafi, "Structural Features Affecting Chiral Resolution of Cannabimimetic Enantiomers by  Amylose 3,5-dimethylphenylcarbamate Chiral Stationary Phase", Chirality,  7(3), 140-146, 1995.

30. S. Levin, R. Nudelman, P. Reschiglian and L. Pasti, "Optimization of Power-Programmed SdFFF by Simulations of Fractograms. Application to o/w Emulsions", J. Pharm. Biomed. Anal.,  13(7), 869-877, 1995.

31. S. Levin and E. Klausner, "Characterization of a Mixed Oil Sub-Micrometer Emulsion Using Sedimentation Field-Flow Fractionation (FFF) with Power Field Programming - Measurements of Droplets' Density", Pharm. Res, vol 12 (8), 1995.

32. S. Levin, M. Sterin, A. Magora and A. Popescu, Resolution of enantiomers of uridine analogs, potential antiviral agents.  J.  Chromatogr. A, 752, 131-146, 1996.

33. System peaks in liquid chromatography, Chimia, 36, 1997, p 8 (Hebrew).

34.  A guide for selection of HPLC system I. Reversed Phase, Chimia,  41, 1998 (Hebrew).

35.   A guide for selection of HPLC system II. Other types of HPLC, Chimia,  42, 1998 (Hebrew).

36. J. Blum, Y. Cohen, S. Levin, A. Katschak and H. Glatt, "Resolution of Four K-Region Arene Imines and Mutagenicity of the Optically Pure Aziridines", J Heterocyclic Chem., 35, 39 (1998).

37. S. Levin, "Analysis of Ions Using High Performance Liquid Chromatography" in Instrumental Multi-Element Chemical Analysis, Ed. Z. Alfassi, Chapman & Hall, 1998.

38. A. Magora, S. Abu-Lafi and S. Levin,  "Comparison of the Enantioseparation of Racemic Uridine Analogs on Whelk-O 1 and ChiralPak-AD Columns" Journal of Chromatogr, 1999.

39. Y. Tadmor, E. Lewinsohn, O. Larkov, A. Meir, M. Minkhoff, E. Lastochkin, Y. Hirshenhorn, M. Edelstein, S. Levin , "Reversed-phase HPLC determination of vitamin E components in maize kernels in the presence of various levels of carotenoids", Agric. Analysis. 2000.

40. Reversed Phase Stationary Phases in Pharmaceutical Sciences, JOURNAL OF LIQUID CHROMATOGRAPHY & RELATED TECHNOLOGIES, Vol. 27, No. 7–9, pp. 1–24, 2004.

1) Shulamit Levin and  Eli Grushka. The Reversed Phase Separation of Amino Acids Using Cupric Ions and Alkyl Sulfonates as Mobile Phase Additives, 9th  International  Symposium in Column Liquid Chromatography, Edinburgh, July 1985.

2)   Shulamit Levin and Eli Grushka, System Peaks and Preparative Liquid Chromatography, Symposium on Preparative Liquid Chromatography, Washington DC, May, 1986.

3)   Shulamit Levin and Eli Grushka., Retention Processes and Complexing Equilibria  in Liquid Chromatography as Studied Through System Peaks, 10th International Symposium on Column Liquid Chromatography, San Francisco, May 1986.

4)   Shulamit Levin and Eli Grushka,  Calculation of Adsorption Isotherm with the Aid of System Peaks in Liquid Chromatography 16th International Symposium on Chromatography, Paris, France, Sep 1986.

5) S. Levin,  T. T. Lenczycki,  P. S. Williams,  J. C. Giddings. Continuous Fractionation by Diffusion in Split-Flow Thin (SPLITT) FFF-Like Separation Cells. 193 rd National ACS meeting, April 1987, Denver, Colorado, USA.

6) J. C. Giddings and S. Levin Continuous Separation of Particles from Macromolecules in Split-Cell Thin (SPLITT) Cell, Annual Symposium of The Fine Particle Society, July 18-21, 1988, Santa Clara, California, USA.

7) S. Levin, Field-Flow Fractionation and related techniques.  International Symposium on Chromatography (A joint meeting of the chromatography and separation subdivision of the ACS and the ICS), November 14-17 1988, The Weizmann Institute of Science, Rehovot, Israel.

8) Shulamit Levin and Saleh Abu-Lafi.  Adsorption  Isotherms of Isomers - The Key for their Systematic Preparative Separation, Xth International Symposium on Medicinal Chemistry, September 2-7, 1990, Jerusalem, Israel.

9) S. Levin, In-Vitro Assays of Drug Release from Liposomes Using the SPLITT Diffusion Cell, The 2nd International Symposium on Field-Flow Fractionation, February 5-6, 1991, Salt Lake City, Utah, USA.  (Did not attend due to the Gulf war).

10) Shulamit Levin and Saleh Abu-Lafi.  Can Mixed Adsorption Isotherms be Measured by System Peaks?  NATO ASI on Theoretical Advancement in Chromatography and Related Separation Techniques, August 18-30, 1991, Ferrara, Italy.
 

11) Shulamit Levin , Separation and Characterization of Emulsions by Sedimentation Field-Flow Fractionation (SFFF) with Field Decay.  The 5th Israeli Conference of Surface and Colloid Science, Tiberias, March 4-5, 1992.

12) Shulamit Levin , A Rapid Test for Burst of Drug from Liposomes and Other Drug Carrying Colloids Using a Diffusion Split-Flow Thin (SPLITT) Cell.  The 5th Israeli Conference of Surface and Colloid Science, Tiberias, March 4-5, 1992.

13) Shulamit Levin and Galia Tawil, Rapid Measurements of Drug Burst from Liposomes by SPLITT Fractionation Based on Diffusion Mechanism.  The 3rd International Symposium on Field-Flow Fractionation (FFF-92), October 5-7, 1992, Park City, Utah, USA.

14) Shulamit Levin, Marina Sterin and Amir Magora.  Structural features affecting resolution of enantiomers of antiviral substances.. 7th International Symposium on Chiral Discrimination, November 1995, Jerusalem, Israel.

15) Shulamit Levin, Current Issues in HPLC, The 1st  Conference of the Israel Analytical Chemical Society, 1998, Bar Ilan University.

16) Shulamit Levin, Considerations in Peak Purity Measurements in HPLC, The 2nd  Conference of the Israel Analytical Chemical Society, 1999, Analyza, Exhibition Park, Tel Aviv.

17) Quantitative determination of Carbamates by Flow Injection Analysis, Using Triple Quadrupole LC-MS ESI.  6th Annual Conference of the Analytical Chemical Society of Israel, 2002.  Shulamit  Levin*, Igal Bar-Ilan**, Gershon Melman2, Shoshana Peleg**, Maria Belzer**. * Analytical Department, Medtechnica, Inc., Petach Tikva; ** Department of Analytical Chemistry, MIGAL-Galilee Technologic Center, Kiryat-Shmona, Israel.  Tel Aviv, Israel.

18) Using Photo-Diode Array During Unattended Reversed-Phase HPLC Method Scouting, 7th Annual Conference of the Analytical Chemical Society of Israel, 2003.  Shula Levin*, Sophia Kevesh**, *Medtechnica, Petach Tikva, **Taro Pharmaceuticals, Haifa, Ramat Gan, Israel.
 
 

1)   Shulamit Levin and Eli Grushka., System Peaks in Reversed Phase Ion Pair Chromatography as Aids in Studying the Equilibrium in the system, 9th International Symposium in Column Liquid Chromatography, Edinburgh, July 1985.

2) S. Levin, Continuous Separation of Particles and Macromolecules Using FFF-Like 'SPLITT'  Systems.  International Symposium on Chromatography (A joint meeting of the chromatography and separation subdivision of the ACS and the ICS), November 14-17 1988, The Weizmann Institute of Science, Rehovot, Israel.

3) S. Levin,  Field-Flow Fractionation and Related Techniques for the Separation of Colloids,  The 4th Israeli Conference on Chemistry, Technology and Applications of Surface Active Agents: Present and Future, Dec. 14-15, 1988, Dead Sea, Israel.

4) Chwan Bor Fuh, Shulamit Levin and J. C. Giddings,  Rapid Protein Diffusion Measurements Using SPLITT Cells.  The First International Symposium on Field-Flow Fractionation (FFF-89), June 15-16, 1989, Park City, Utah, USA.

5) Jue Zhang, P. Stephen Williams, Marcus N. Myers, Shulamit Levin, J. Calvin Giddings.  Use of Hydrodynamic Lift Forces in SPLITT Cells for Continuous Particle Separation.  The First International Symposium on Field-Flow Fractionation (FFF-89), June 15-16, 1989, Park City, Utah, USA.

6)  Shulamit Levin and Tali Bar-Shua, Diffusion Coefficients, Aggregation and Degradation of Macromolecules and colloids, Measured with a Dynamic-Dialysis Membraneless Cell.  The 55th meeting of the Israeli Chemical Society,  Feb. 11-12, Tel  Aviv, 1990.

7) Shulamit Levin and Saleh Abu-Lafi.  Interference Between Two Isomers with Small Selectivity Factor as Indicated by Their Mixed Adsorption Isotherms.  HPLC '91, 15th International Symposium on Column Liquid Chromatography, Basel, Switzerland, June 3-7, 1991.

8) Shulamit Levin,  A Rapid In Vitro Test for Dilution Induced Burst of Drug From Liposomes and Other Drug Carrying Colloids Using a Diffusion SPLITT Cell.  4th International Symposium on Drug Analysis, Liege, Belgium,  5-8th May 1992.

9) Shulamit Levin , Galia. Tawil and Elka Touitou,  Aggregation and De-Aggregation of Insulin, Observed by a Split-Flow Thin (SPLITT) System, Operation as a Membraneless Dynamic Dialysis Cell.  2nd Jerusalem Conference on Pharmaceutical Sciences and Clinical Pharmacology, Jerusalem, Israel, May 24-29, 1992.

10) Shulamit Levin, and Liron Stern, Separation and Characterization of Emulsions by Sedimentation Field-Flow Fractionation (SFFF) with Field Decay, Intralipid™ as a model.  The 3rd International Symposium on Field-Flow Fractionation (FFF-92), October 5-7, 1992, Park City, Utah, USA.

11) Shulamit Levin, Galia Tawil and Iris Shasha, The Diffusion Split-Flow Thin (SPLITT) Cell as an Analytical Tool for Protein Change of Conformation.  The 3rd International Symposium on Field-Flow Fractionation (FFF-92), October 5-7, 1992, Park City, Utah, USA.

12) Shulamit Levin, Saleh Abu-Lafi, Jamal Zahalka and Raphael Mechoulam, Resolution of Chiral Cannabinoids on Amylose tris (3,5-dimethylphenylcarbamate) Chiral Stationary Phase - Effects of Structural Features and Mobile Phase Additives.  Fourth International Symposium on Chiral Discrimination, September 19-22, 1993, Montreal, Quebec, Canada.

13) Shulamit Levin and Saleh Abu-Lafi,  Experimental Studies of Competition Between Enantiomers in Chiral Liquid Chromatography Through Their System Peaks.   Fourth International Symposium on Chiral Discrimination, September 19-22, 1993, Montreal, Quebec, Canada.

14) Saleh Abu-Lafi, Marina Sterin and Shulamit Levin, Structural Features Affecting Chiral Recognition and Separation of Chiral Bicyclic Monoterpens Using Amylose Based Chiral Stationary Phase. 18th Internatinal Symposium on Column Liquid Chromatography, May 8-13, 1994, Minneapolis, Minnesota, US.

15) Shulamit Levin, Saleh Abu-Lafi and Marina Sterin, Structural Features Affecting the enantioselective retention of Cannabimimetic enantiomers on a 3,5-dimethylphenyl-carbamate Amylose Stationary Phase.  Fifth International Symposium on Chiral Discrimination, September 25-28, 1994, Stockholm, Sweden.

16) Shulamit Levin, Liron Stern, Eytan Klausner, Amira Ze'evi, Menashe Y. Levy and Shaul Muchtar, Characterization of Submicron Emulsions Using Sedimentation Field-Flow Fractionation (FFF) with Power Field Programming, Fifth International Symposium on Pharmaceutical and Biomedical Analysis, September 21-24, 1994, Stockholm, Sweden