References
- Adams D. A.W. Recent trends in the search for new azo dyes. J. Soc. Dyers Col. 1951; 67: 223
- Ingals T. H. Studies in the urinary excretion and blood concentration of ascorbic acid in infantile scurvy. J. Pediat. 1937; 10: 577
- Kchouk M. Dosage colorimétrique de la vitamine C par un réactif original la 4 chloro 2 nitroaniline. Arch. Inst. Pasteur Tunis. 1963; 40: 315
- King O. G. Chemical methods for determination of vitamin C. Indust. Eng. Chem. Analyt. Ed. 1941; 13: 225
- Michaëlsson M. Bilirubin determination in serum and urine. Scand. J. clin. Lab. Invest. 1961, Suppl. 56
- Moor H. Bestimmung der Ascorbinsäure in Legensmitteln und biologischem Material. Mitt. Lebensmitt. Hyg. 1956; 47: 20
- Roe J. Appraisal of methods for the determination of ascorbic acid. Ann. N.Y. Acad. Sci. 1961; 92: 277
- Roe J. H., Kuether C. A. The determination of ascorbic acid in whole blood and urine through the 2,4-dinitrophenylhydrazine derivative of dehydroascorbic acid. J. biol. Chem. 1943; 147: 399
- Schaffert R. R., Kingsley G. R. A rapid, simple method for the determination of reduced, dehydro- and total ascorbic acid in biological material. J. biol. Chem. 1954; 12: 59
- Schmall M., Pifer C. W., Wollish E. G. Determination of ascorbic acid by a new colorimetric reaction. Analyt. Chem. 1953; 25: 1486
- Schmall M., Pifer C. W., Wollish E. G., Duschinsky R., Gainer H. Colorimetric determination of ascorbic acid. Analyt. Chem. 1954; 26: 1521
- Strohecker R. Analytik der Ascorbinsäure. Ascorbinsäure. Steinkopf Verlag, Darmstadt 1965
- Warwick G. P. Relative rates of reduction of a series of azo compounds. J. Soc. Dyers Col. 1959; 75: 291
- Zollinger H. Chemie der Azofarbst offe. Birkhäuser Verlag, Basel and Stuttgart 1958