Mass spectrometric differentiation of a- and b-aspartic acid in a pseudo- tetrapeptide thrombosis inhibitor and its isomer.      Luu, Nganha C.; Robinson, Scott; Zhao, R.; McKean, R.; Ridge, Douglas P..    Department of Chemistry and Biochemistry ,  University of Delaware,  Newark,  DE,  USA.    European Journal of Mass Spectrometry  (2004),  10(2),  279-287. 

Determination of Pb Complexation in Oxic and Sulfidic Waters Using Pseudovoltammetry.      Rozan, Tim F.; Luther, George W.; Ridge, Doug; Robinson, Scott.    College of Marine Studies ,  University of Delaware,  Lewes,  DE,  USA.    Environmental Science and Technology  (2003),  37(17), 3845-3852.

Molecular mass determination of saturated hydrocarbons: reactivity of h5-cyclopentadienylcobalt ion ( CpCo.bul .+) and linear alkanes up to C-30.     Byrd, H. C. Michelle; Guttman, Charles M.; Ridge, Douglas P..    National Institute of Standards and Technology ,  Polymers Division,  Gaithersburg,  MD,  USA.    Journal of the American Society for Mass Spectrometry  (2003), 14(1), 51-57.

The Proton Affinity and Entropy of Protonation of Lysinamide. The Effects of Intramolecular Proton Solvation.      Kinser, Robin D.; Nicol, Gordon; Ridge, D. P..    Department of Chemistry and Biochemistry ,  University of Delaware,  Newark,  DE,  USA.    Journal of Physical Chemistry A  (2002),  106(42),  9925-9929.

Surface induced dissociation of chromium hexacarbonyl on fluorinated alkanethiolate surface in ion cyclotron resonance mass spectrometer: studies of energetics of the process using recursive internal energy distribution search method.      Rakov, V. S.; Denisov, E. V.; Futrell, J. H.; Ridge, D. P..    William R. Wiley, Environmental Molecular Science Laboratory ,  Pacific Northwest National Laboratory,  Richland,  WA,  USA.    International Journal of Mass Spectrometry  (2002),  213(1),  25-44.

Evidence for iron, copper and zinc complexation as multinuclear sulfide clusters in oxic rivers.      Rozan, Tim F.; Lassman, Michael E.; Ridge, Douglas P.; Luther, George W., III.    College of Marine Studies ,  University of Delaware,  Lewes,  DE,  USA.    Nature ( London )  (2000),  406(6798),  879-882.

Signal suppression in electrospray ionization Fourier transform mass spectrometry of multi-component samples.     Sterner, J. L.; Johnston, M. V.; Nicol, G. R.; Ridge, D. P..    Department of Chemistry and Biochemistry ,  University of Delaware,  Newark,  DE,  USA.    Journal of Mass Spectrometry  (2000),  35(3),  385-391.

Bioactivation Mechanisms of Haloalkene Cysteine S-Conjugates Modeled by Gas-Phase, Ion-Molecule Reactions.      Luu, Nganha C.; Iyer, Ramaswamy A.; Anders, M. W.; Ridge, Douglas P..    Department of Chemistry and Biochemistry ,   University of Delaware,  Newark,  DE,  USA.    Chemical Research in Toxicology  (2000),  13(7),  610-615.

Fourier-transform ion cyclotron resonance mass spectrometric studies of elimination reactions of anionic bases with metabolites of a fluorinated anesthetic agent: towards modeling bioactivation in the gas phase, Nhanha C. Luu, Ramaswamy A. Iyer, M. W. Anders and Douglas P. Ridge, Int. J. Mass Spectrom., Vol. 195/196, 203-213(2000)

Binding of Nitric Oxide to Iron(II) Porphyrins: Radiative Association, Blackbody Infrared Radiative Dissociation and Gas-Phase Association Equilibrium, Ounan Chen, Susan Groh, Alison Liechty, and Douglas P. Ridge, J. Am. Chem. Soc., Vol. 121, 11910(1999).

J.L.Sterner,M.V.Johnston,G.R.Nicol,and D.P.Ridge, Apparent Proton Affinities of High Charged Peptide Ions, J.Amer.Soc.Mass Spectrom, 10, 483-491(1999).

Dehydrogenation of Ethane by CpM+ (M = Fe, Co, Ni) in the Gas Phase.An FT-ICR-MS Study, Dag Ekeberg and Einar Uggerud, Hung-Yu Lin, Karl Sohlberg, Henglong Chen, and Douglas P. Ridge, Organometallics, Vol.18, No.1, p40-44(1998)

Gas phase reactions of M+ and MO+ (M = Sc, Ti, V) with toluene, Organometallics, Asgeir Bjarnason, Douglas P. Ridge, Vol.17, No.9, p1889-1893(1998)

The unimolecular chemistry of protonated glycinamide and the proton affinity of glycinamide mass spectrometric experiments and theoretical model, Robin D. Kinser, Douglas P. Ridge, George Hvistendahl, Bard Rasmussen and Einar Uggerud, Chem.--Eur.J.,2, 1143-1149(1996).

Pressure Dependence of Metal-Catalyzed Polymerization in the Gas Phase, A Study of Radiative and Collisional Relaxation, Asgeir Bjarnason and D. P. Ridge, J. Phys. Chem., 100, 15118-15123(1996).

Anders,Colin Thorpe and Douglas P. Ridge, Fourier-Transform Ion Cyclotron Resonance Mass Spectrometric Evidence for the Formation of à-Chloroenethiolates and Thioketenes from Chloroalkene-Derived, Cytotoxic 4-Thiaalkanoates, Tian-lan Zhang, Liping Wang, Mazzaz Hashmi, M. W. Chem. Res. Toxicol., 8, 907-10(1995).

A method of rate constant measurement in Fourier transform ion cyclotron resonance pulsed valve experiments, Eur. Mass Spectrom., Yi Lin, G. R. Nicol and D. P. Ridge, 1, 113-19(1995).

Reaction of Diantimony Anion with Mononuclear Metal Carbonyls. First Observed Instance of an Antimony-Transition-Metal Triple Bond, Frederick P. Arnold, Jr., Douglas P. Ridge and Arnold L. Rheingold, J. Am. Chem. Soc., 117, 4427-8(1995).