Ion hydration effects in aqueous solutions of strong electrolytes, according to proton magnetic relaxation measurements

Abstract

The concentration dependences of proton magnetic relaxation (PMR) rates measured at different temperatures in aqueous electrolyte solutions and concentrated seawater (SW) in a wide range of salt concen trations and for different seawater salinities are presented, along with the concentration dependences of PMR rates determined in salts dissolved directly in seawater. The coordination numbers of the basic ions in seawater were determined from the complete solvation limits and compared with those measured in single component water-salt solutions. The attaining of complete solvation limits was determined using the PMR data for ions of different hydration signs.