Electrospray ionization mass spectra

Loo, J. A. Edmonds, C. G. Udseth, H. R. Smith, R. D. Effect of reducing disulfide-containing proteins on electrospray ionization mass-spectra. Anal. Chem. 1990, 62, 693-698. 

Fig. 2. Individual positive ion electrospray ionization mass spectra taken at time (a) 0 and (b) 10 min into the reaction. The d isappearance of t he peak at m/z 649 and the growth of the products at m/z 191 and 397 are clearly evident.

FIGURE 12.12 Electrospray ionization mass spectra of bupropion (solid line) and [ Hgjhydroxy-bupropion (dotted line). Note that the protonated molecular ions (MH+, respectively, at mjz 256 and 262) exhibit characteristic chlorine isotope peaks that have 25% of the molecular ion intensity at m/z 258 and 264, due to the relative natural abundance of Cl and Cl. This is reflected also in the MH+-H2O ions at mjz 238 and 244. Data provided by R.L. Walsky and R.S. Obach, Pfizer, New York, NY. 

Next, the optimal MS/MS conditions were investigated. Electrospray ionization mass spectra recorded for the six... 

Figure 35 Electrospray ionization mass spectra extracted from total ion chromatograms for (A) P, (B) M1, (C) M2, (D) M3, and (E) M4.

Williams, J.D. Weiner, B.E. Ormand, J.R. Brunner, J. Thornquest Jr., A.D. Burinsky, D.J. Automated Molecular Weight Assignment of Electrospray Ionization Mass Spectra, Rapid Commun. Mass Spectrom. 15, 2446-2455 (2001). 

Mirza, U.A. and Chait, B.T., Effects of anions on the positive ion electrospray ionization mass spectra of peptides and proteins. Anal. Chem., 66, 2898, 1994. 

Mihnan, B.L. Cluster ions of diquat and paraquat in electrospray ionization mass spectra and their collision-induced dissociation spectra. Rapid Commun. Mass Spectrom. 2003, 17, 1344-1349. 

Zagorevskii, D.V., Nasrullah, M.J., Raghunadh, V., and Benicewicz, B.C. (2006) The effect of tetrahydrofuran as solvent on matrix-assisted laser desorption/ionization and electrospray ionization mass spectra of functional polystyrenes. Rapid Commun. Mass Spectrom., 20,178-180. 

Next, the optimal MS/MS conditions were investigated. Electrospray ionization mass spectra recorded for the six penicillins gave [M-H] , [M-H-COJ , and [M-H-141] . When serves as a precursor ion for MS/MS,... 

Kamel AM, Brown PR, Munson B. Effects of mobile-phase additives, solution pH, ionization constant, and analyte concentration on the sensitivities and electrospray ionization mass spectra of nucleoside antiviral agents. Anal Chem. 1999 71 5481-92. 

J. D. Lennon, III, S. P. Cole, and G. L. Glish, lon/molecule reactions to chemically deconvolute the electrospray ionization mass spectra of synthetic polymers. Anal. Chem. 78, 8472-8476, 2006. 

FIGURE 18.11 Electrospray ionization mass spectra (ESI-MS) of low molecular weight samples. (Reproduced from Fenn, J.B., J. Biomol. Tech., 13, 101, 2002. With permission of the Association of Biomolecular Resource Facilities.)... 

Van Berkel, G. J. McLucatEv, S. A. Gush, G. L. Electrochemical origin of radical cations observed in electrospray ionization mass spectra. Ana/. Chem. 1992, 64, 1586-1593. 

Wada, Y. Tamura, J. Musselman, B. D. Kassel, D. B. Sakurai, T Matsuo, T. Electrospray ionization mass-spectra of hemoglobin and transferrin by a magnetic-sector mass-spectrometer—Comparison with theoretical isotopic distributions. Rapid Commun. Mass Spectrom. 1992, 6, 9 13. 

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