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Abstract
The SrS–H2O–gas system was studied to determine the concentrations of formed particles at equilibrium state after the dissolution of strontium sulfide in distilled water at 25 °C. The solubility of SrS was experimentally measured at a salt concentration range of 0.125–2.924 mM, and the determined pH was at a range of 10.0–11.6. The concentrations of different sulfide forms were determined spectrometrically, potentiometrically and by iodometric titration. The solubility of SrS was evaluated to be 1.671 mM (200 mg/l) and the value of the calculated solubility product (Ksp) was 2.143×10−6 (mol/l)2 according to the measured pH value of 11.18 and the calculated concentration of formed particles at equilibrium state in a closed oxygen-free test system. The average measured gaseous hydrosulfide (H2S)g bonding rate by alkaline (0.5 M NaOH) solution was 0.827 u g/h cm2.
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