Publications

23. Bogan, M. J.; Bakhoum, S. F. W.; Agnes, G. R. Promotion of alpha-cyano-4-hydroxycinnammic acid and Peptide Co-crystallization within Levitated Droplets with Net Charge, J. Am. Soc. Mass Spectrom., In press.

22. Haddrell, A. E.; Feng, X.; Nassar, R.; Bogan, M. J.; Agnes, G. R. Off-line LDI-TOF-MS Monitoring of Simultaneous Inorganic and Organic Reactions on Particles Levitated in a Laboratory Environment, J. Aerosol Sci., In press.

21. Bogan, M. J.; Agnes, G. R. Electrodynamic charged droplet processing to couple capillary liquid chromatography with offline matrix-assisted laser desorption/ionization mass spectrometry, Rapid Commun. Mass Spectrom., 2004, 18, 2673-2681.

20. Bogan, Michael J.; Agnes, George R.. Wall-less sample preparation of mm-sized sample spots for femtomole detection limits of proteins from liquid based UV-MALDI matrices. J. Am. Soc. Mass Spectrom., 2004, 15(4), 486-495.

19. Haddrell, Allen E.; Agnes, George R.. A class of heterogeneous/multiphase organic reactions studied on droplets/particles levitated in a laboratory environment: aldehyde + 1,8-diaminonaphthalene=imine. Atmospheric Environment, 2004, 38(4), 545-556.

18. Haddrell, Allen E.; Agnes, George R.. Organic Cation Distributions in the Residues of Levitated Droplets with Net Charge: Validity of the Partition Theory for Droplets Produced by an Electrospray. Anal. Chem., 2004, 76(1), 53-61.

17. Bogan, Michael J.; Agnes, George R.. Time-of-flight mass spectrometric analysis of ions produced from adjacent sample spots irradiated simultaneously by a single 337 nm laser. Rapid Commun. Mass Spectrom., 2003, 17(22), 2557-2562.

16. Verge, K. M; Agnes, G. R. Plasticizer contamination from vacuum system O-rings in a quadrupole ion trap mass spectrometer, J. Am. Soc. Mass Spectrom., 2002, 18, 901-905.

15. Bogan, M. J.; Agnes, G. R. MALDI-TOF-MS analysis of droplets prepared in an electrodynamic balance: 'wall-less' sample preparation, Anal. Chem., 2002, 74, 489-496.

14. Bogan, M. J.; Agnes, G. R. Poly(ethylene glycol) doubly and singly cationized by different alkali metal ions: Relative cation affinities and cation-dependent resolution in a quadrupole ion trap mass spectrometer, J. Am. Soc. Mass Spectrom., 2002, 13, 177-186.

13. Feng, X.; Bogan, M. J.; Agnes, G. R. Coulomb fission resolved progeny droplet production from isolated evaporating methanol droplets, Anal. Chem., 2001, 73, 4499-4507.

12. Feng, X.; Bogan, M.; Chuah, E.; Agnes, G. R. Micro-heterogeneous catalysis at the surface of electrodynamically levitated particles, J. Aerosol Sci., 2001, 32, 1147-1159.

11. Xu, J. Q.; Balik, D.; Agnes, G. R. Aerosol static electrification and its effect in inductively coupled plasma spectroscopy, J. Anal. At. Spectrom., 2001, 16, 715-723.

10. Feng, X.; Agnes, G. R. Single Isolated Droplets with Net Charge as a Source of Ions, J. Am. Soc. Mass Spectrom., 2000, 11, 393-399.

9. Xu, Q; Agnes, G. R. Use of laser scatter signals to study the effect of a DC biased mesh screen in a spray chamber on aerosols generated for use in atomic spectrometry, Appl. Spectrosc., 1999, 54(1), 94-98.

8. Wang, H. J.; Agnes, G. R. Kinetically labile equilibrium shifts induced by the electrospray process, Anal. Chem., 1999, 71(19), 4166-4172.

7. Wang, H. J.; Agnes, G. R. Evaluation of electrospray mass spectrometry as a technique for quantitative analysis of kinetically labile solution species, Anal. Chem., 1999, 71(17), 3785-3792.

6. Xu, Q; Agnes, G. R. Influence of droplets with net charge in inductively coupled plasma atomic emission spectroscopy and implications for the easily ionizable element chemical matrix effect, Appl. Spectrosc., 1999, 53(8), 965-973.

5. Agnes, G. R.; Horlick, G. Effect of Operating Parameters on Analyte Signals in Elemental Electrospray Mass Spectrometry, Appl. Spectrosc., 1995, 49(3), 324-334.

4. Agnes, G. R.; Stewart, I. I.; Horlick, G. Elemental Speciation Measurements with Electrospray Mass Spectrometry: An Assessment, Appl. Spectrosc., 1994, 48(11), 1347-1361.

3. Agnes, G.R.; Horlick, G. Determination of Solution Ions by Electrospray Mass Spectrometry, Appl. Spectrosc., 1994, 48(6), 655-661.

2. Agnes, G. R.; Horlick, G. Electrospray Mass Spectrometry as a Technique for Elemental Analysis: Quantitative Aspects, Appl. Spectrosc., 1994, 48(6), 649-654.

1. Agnes, G. R.; Horlick, G. Electrospray Mass Spectrometry as a Technique for Elemental Analysis: Preliminary Results, Appl. Spectrosc., 1992, 46(3), 401-406.