Microanálise em trabalhos de rotina
II - Avaliação de proteínas
Keywords:
processo kjeldahl, erro experimental, análise química, transporte de amoníaco, microdifusão de amônioAbstract
Three forms of the Kjeldahl process were compared with one another to determine which would be most suitable for routine work: 'Macroanalysis', in which ammonium was distilled; 'Semi- microanalysis', in which ammonium was transported by vapor; and 'Microanalysis', in which ammonium was transported by dif- fussion (Conway).
References
ARCHIBALD, R.M. Nitrogen by the Kjeldahl method. In: REINER, M. ed. Standard methods of clinical chemistry New York, Academic Press, 1958. V. 2. P. 91-9
BEACH, E. Nonprotein nitrogen. In: REINER, M. ed. Standard methods of clinical chemistry. New York,Academic Press, 1958. V. 2. P. 100-6.
CHRISTIAN, Gary D. Analytical chemistry. Waltham, Mass., Xerox College Publishing, 1971. 508 p.
CONWAY, Edward J. Microdiffusion analyses and volumetric error. New York, Chemical Publishing, 1963. 467 p.
CONWAY, Edward J. § O'MALLEY, E. Microdiffusion methods. Ammonia and urea using buffered absorbents.The Biochemi- cal Journal, London, 36(7):655-61. 1942.
DOYLE, W.L. § OMOTO, J.H. Ultramicrodetermination of ni- trogen. Analytical Chemistry, Washington, D.C. 22(4): 603-4. 1950.
IMPROVED Kjeldahl method for nitrate-containing samples. In: HORWITZ, William. ed. Official methods of analyses of the Association of Official Analytical Chemestry. 11. ed. Washington, AOAC, 1970. cap. 2, p. 17(n. 2.052.).
KONIG, I.K. Untersuchung von Nahrungs, Genussmitteln und Gebrauchsgegenstdnden. 4. ed. Berlin, Springer Verl, 1910. 772 p.
KUCK, J.A.; KINGSLEY, A.; KINSEY, D.; SHEEHAN, F.;SWIGERT, G. F. Kjeldahl ultramicrodeterminantion of nitrogen. Analytical Chemistry, Washington,D.C. 22(4):604-11.1950
PREGL, Fritz § ROTH, Hubert. Die quantitative organische Mikroanalyses. Berlin, Verlag Julius Springer, 1935. 328 p.
