Raman study of cation effect on sulfate vibration modes in solid state and in aqueous solutions

Raman spectra of potassium, sodium, and ammonium sulfates (K 2 SO 4 , Na 2 SO 4 , and (NH 4 ) 2 SO 4 ) are reported and analyzed. These sulfates have been investigated under two states: solid (anhydrous and hydrated) salts and aqueous solutions. The effects of monovalent ions (K + , Na + , and NH 4 ... View More