Fig. 2: Photoelectron spectra (S 2p) of aqueous solutions of 400 mM sodium sulfite.
From: Direct observation of the complex S(IV) equilibria at the liquid-vapor interface
The data are recorded with photon energies (hν) of 372 eV or 277 eV. All peaks in the S 2p spectra are fitted with Gaussian doublets, except for the SO2,(g) peak, which was fit with a Voigt doublet. The legend is depicted in (a), and the fit parameters can be found in Table 1. a pH = 10.4, hν = 372 eV. b pH = 7, hν = 372 eV. c pH = 4, hν = 372 eV. d pH = 1.8, hν = 372 eV. e pH = 0.8, hν = 372 eV. f pH = 0.36, hν = 277 eV, −45 V bias applied to separate the gas phase.
