Abstract
A computer-processed high-precision photometric titration procedure for the determination of the total alkaline earth metal concentration in sea water is described. Titrations are carried out at pH 10.5, with EDTA as complexing agent and eriochrome black T as indicator. The method yields a value of 63.32 mmoles per kg of 35‰ salinity for the total alkaline earth metal concentration in Standard Sea Water, and the precision of the method is ca. 0.01%.
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