Abstract
A turbidimetric technique using 2-aminoperimidine was investigated for the determination ofsulfate ion in sea water. This method was simpler in procedures and more accurate in determinationthan the conventional gravimetric method by barium chloride and others.
The calibration curve obtained by the present method was linear for the range of 0to 10 mg/l, showing a satisfactory reproducibility as evidenced by the coefficient of variation of 1.70% foundfor repeated experiments. The coefficient of variation of the analytical results was less than 2.07% in this method.
The sulfate ion concentration in used sea water was found to be 2.66 g/l (sample A) and 2.48g/l (sample B) by the present method, showing a good agreement with the results obtained bythe gravimetric method using barium chloride. As a result of this experiment, it was proved tobe an effective method as being significant for rapid and simple determination of sulfate ion in sea water.
