Reference Articles:

1. Al Hitti, I. K., and J. D. R. Thomas "Ion-selective electrode determination of calcium and potassium in bovine skim-milk powder" Anal. Lett., 18, 975 (1985) 2. Anker, P., E. Wieland, D. Ammann, R. E. Dohner, R. Asper, and W. Simon "Neutral carrier based ion-selective electrode for the determination of total calcium in blood serum" Anal. Chem., 53, 1970 (1981) 3. Fogh-Anderson, N., T. F. Christiansen, L. Komarmy, and O. Siggard-Andersen " Measurement of free calcium ion in capillary blood and serum" Clin. Chem., 24, 1545 (1978) 4. Frend, A. J., G. J. Moody, J. D. R. Thomas, and B. J. Birch "Studies of calcium ion-selective electrodes in the presence of anionic surfactants" Analyst, 108, 1070 (1983) 5. Hadjiioannou, T. A., and D. S. Papastathopoulos "EDTA titrations of calcium and magnesium with a calcium-selective electrode" Talanta, 17, 399 (1970) 6. Krumgalz, B. S., and R. Holzer " On the determination of Ca ion concentration in seawater" Limnol. Oceanogr., 25, 367 (1980) 7. Tackett, S. L."Automatic titration of calcium with EDTA using a calcium-selective electrode" Anal. Chem., 41, 1703 (1969) 8. Whitfield, M., and J. V. Leyendekkers "Liquid ion-exchange electrodes as end-ponit detectors in compleximetric titrations. Determination of calcium and magnesium in the presence of sodium. Part I. Theoretical considerations" Anal. Chim. Acta, 45, 383 (1969) 9. Whitfield, M., and J. V. Leyendekkers "Liquid ion-exchange electrodes as end-ponit detectors in compleximetric titrations. Part II. Determination of calcium and magnesium in the presence of sodium" Anal. Chim. Acta, 45, 399 (1969) 10. Woolson, E. A., J. A. Axley, and P. C. Kearney "Soil calcium determination using a calcium ion electrode" Soil Sci., 109, 279 (1970)