High-precision determination of calcium in the presence of higher concentrations of magnesium by means of a computerized photometric titration : Application to sea water |
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| Authors: | Daniel Jagner |
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| Affiliation: | Department of Analytical Chemistry, University of Göteborg, Fack, S-403 20 Göteborg 5 Sweden |
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| Abstract: | A computerized photometric titration procedure for the determination of calcium in the presence of magnesium with zinc-zincon as indicator is described. The evaluation method is based on straight-line regression, the method yielding a relative precision of 0.00028 when applied to sea water samples in the salinity range 5–35? |
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