Abstract
An improved potentiometric titration method for the determination of calcium and magnesium in sea water has been newly devised. In this method, a mini-computer is used for the automation of titrations, and ion-selective electrodes are used as an end-point detector. Calcium is determined by titration with EGTA, and total alkaline earth metals (magnesium + calcium + strontium) by titration with EDTA. Magnesium can be determined by the difference, strontium having been determined by a suitable method. In the present method, calcium and magnesium in sea water can be determined with a precision of 0.1 %.
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Kanamori, S., Ikegami, H. Computer-processed potentiometric titration for the determination of calcium and magnesium in sea water. Journal of the Oceanographical Society of Japan 36, 177–184 (1980). https://doi.org/10.1007/BF02070330
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DOI: https://doi.org/10.1007/BF02070330