Complexometric titration of calcium in the presence of larger amounts of magnesium |
| |
| Authors: | Tsunogai S Nishimura M Nakaya S |
| |
| Institution: | Department of Chemistry, Faculty of Fisheries, Hokkaido University, Hakodate, Japan. |
| |
| Abstract: | A simple and accurate titrimetric determination of calcium in the presence of larger amounts of magnesium is proposed. Calcium is extracted into a small volume of organic solvent as its glyoxal-bis(2-hydroxyanil) complex, and the calcium is titrated with EGTA. The end-point is sharp, and occurs when the red colour of the organic layer vanishes. This method has been successfully applied to the determination of calcium in sea-water with an error less than 0.1%. |
| |
| Keywords: | |
| 本文献已被 PubMed 等数据库收录！ |
|
