References
- Bjerrum J., Schwarzenbach G., Sillen L. G. Stability constants, Part I: Organic ligands, Part II: Inorganic ligands. Special publication nos. 6 and 7, The Chemical Society, London 1958
- Carlström G. Studies on parturient paresis in dairy cows. II. Determination of calcium ions in bovine serum. Acta agric. scand. 1955; 5: 357
- Cope A. C., Heyl D., Peck D., Eide C., Arroyd A. 1–3-dimethyl-5-alkaly barbituric acids. J. Amer. chem. Soc. 1941; 63: 356
- Diehl H., Lindstrom F. Eriochrome Black T and its calcium and magnesium derivatives. Anal. Chem. 1959; 31: 414
- Ettori J., Scoggan S. M. Metal ions in bio logical systems. A determination of pM by spectrophotometry of metal indicators at two wavelengths. Arch. Biochem. 1958; 78: 213
- Fowler D., Fone D. J., Cooke W. T. The calcium fractions of plasma in hypercalcaemic conditions and in adult coeliac disease. Lancet 1951; 2: 284
- Grecnwald I., Redish J., Kibrick A. C. The dissociation of calcium and magnesium phos phates. J. biol. Chem 1940; 135: 65
- Guggenheim E. A. Studies of cells with lipid liquid junctions. Part II. Thermodynamic signif icance and relationship to activity coefficients. J. phys. Chem. 1930; 34: 1758
- Gysling H., Schwarzenbach G. Metallindi-katoren II. Beziehungen zwischen struktur und komplexbildungsvermögen bei verwandten des murexids. Helv. chim. Acta. 1949; 32: 1484
- Hiskey C. F. Precision of spectrophotometric measurements. Phys. Techniques in Biol. Res. 1955; 1: 103
- Howell D. S., Pita J. C., Marques J. F., Madruga J. E. Partition of calcium, phosphate, and protein in the fluid phase aspirated at calcifying sites in epiphyseal cartilage. J. clin. Invest. 1968; 47: 1121
- Kielland J. Individual activity coefficients of ions in aqueous solutions. J. Amer. chem. Soc. 1937; 59: 1675
- McLeod H. G., Gordon A. R. The thermo dynamics of aqueous solutions of calcium chloride at temperatures from 15–35° from E. M. F. measurements on cells with trans ference. J. Amer. chem. Soc. 1946; 68: 58
- Oreskes I., Hirsch C., Douglas K. S., Kupfer S. Measurement of ionized calcium in human plasma with a calcium selective elec trode. Clin. chim. Acta. 1968; 21: 303
- Pedersen K. O. Determination of calcium fractions of serum. I. The separation of pro tein-bound and protein-free fractions by means of a simplified ultrafiltration technique. Scand. J. clin. Lab. Invest. 1969; 24: 69
- Raaflaub J. Über ein photometrisches ver fahren zur bestimmung des ionisierten calci ums. Hoppe-Seylers Z. physiol. Chem. 1951; 288: 228
- Raaflaub J. Applications of metal buffers and metal indicators in biochemistry. Meth. bio chem. Anal. 1956; 3: 301
- Raaflaub J. Zur bestimmung des ionisierten calciums in biologischen flüssigkeiten, inbe sondere im harn. Hoppe-Seylers Z. physiol. Chem. 1962; 328: 198
- Rose G. A. Determination of the ionized and ultrafiltrable calcium of normal human plasma. Clin. chim. Acta. 1957; 2: 227
- Schwarzenbach G., Gysling H. Metall-indikatoren I. Murexid als indikator auf cal cium- und andere metall-ionen. Komplexbil dung und lichtabsorption. Helv. chim. Acta. 1949; 32: 1314
- Shatkay A. Individual activity of calcium ions in pure solutions of CaCl2 and in mixtures. Blophys. J. 1968; 8: 912
- Smeets W. T. G. M., Seekles L. Determina tion of the content of calcium ions in milk ultrafiltrates. Nature 1952; 169: 802
- Smith R. M., Alberty R. A. The apparent stability constants of ionic complexes of various adenosine phosphates with monovalent cations. J. phys. Chem. 1956; 60: 180
- Strates B. S., Neuman W. F., Levinskas G. J. The solubility of bone mineral. II. Pre cipitation of near-neutral solutions of calcium and phosphate. J. phys. Chem. 1957; 61: 279
- Walser M. Determination of free magnesium ions in body fluids. Improved methods for free calcium ions, total calcium, and total magnesium. Anal. Chem. 1960; 32: 711
- Walser M. Ion association. V. Dissociation constants for complexes of citrate with sodium, potassium, calcium, and magnesium ions. J. phys. Chem. 1961; 65: 159