Abstract
ACCORDING to several authors1,2, the direct titration of calcium and magnesium with ethylene-diamine tetraacetate has yielded very good results, especially in the determination of water hardness and in clinical investigations of blood plasma. Since other methods described for the determination of calcium and magnesium are rather laborious, and micro-scale determination is liable to large errors, we have tried the direct titration with ethylene-diamine tetraacetate using the well-known Linder-strøm–Lang micro-titration technique. Determinations have been carried out on some species of Blattaria: Periplaneta americana, Periplaneta australasiae and Blabera fusca.
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References
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VAN ASPEREN, K., VAN ESCH, I. A Simple Microtitration Method for the Determination of Calcium and Magnesium in the Hæmolymph of Insects. Nature 174, 927 (1954). https://doi.org/10.1038/174927a0
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DOI: https://doi.org/10.1038/174927a0
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