✍ Scribed by Z. L. Cheng; K. W. M. Siu; R. Guevremont; S. S. Berman
No coin nor oath required. For personal study only.
The electrospray mass spectra of MX, and MX, salts (where X is typically halide or nitrate) in protic and aprotic solvents, and solvent mixtures were examined. Comparisons of species responses with equilibrium aqueous solution concentrations were made. For MX, salts, a good correlation between MOH' response and MOH' solution concentration was observed under conditions where the collision energy was nominally zero. Cu(I1) is easily reduced in acetonitrile to Cu(1); Cu(1) was the principal species observed in the electrospray mass spectrum of Cu(I1) in acetonitrile whereas Cu(I1) was the principal species observed in that of Cu(I1) in dimethyl sulphoxide. Gas-phase reactions between solvated clusters produced by electrospray and a second solvent vapour were examined. M3 + clusters were the principal ions observed when an aqueous solution of MX, was sprayed in the presence of aprotic solvent vapours.
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