Artículos de revistas
Potentiometric Study Of Acid-base Properties Of Humic Acid Using Linear Functions For Treatment Of Titration Data
Registro en:
Analytica Chimica Acta. , v. 257, n. 1, p. 35 - 39, 1992.
32670
10.1016/0003-2670(92)80147-Y
2-s2.0-0026555260
Autor
Aleixo L.M.
Godinho O.E.S.
da Costa W.F.
Institución
Resumen
A pontentiometric study of the acid-base properties of humic acid was made with the objective of determining the pKa value and concentration of each titratable group. The use of linear equations in the treatment of titration curves led to the characterization of six titratable groups, which permits the acid-base properties to be explained and will be useful in studies of soil and environmental chemistry. © 1992. 257 1 35 39 Takamatsu, Yoshida, DETERMINATION OF STABILITY CONSTANTS OF METAL-HUMIC ACID COMPLEXES BY POTENTIOMETRIC TITRATION AND ION-SELECTIVE ELECTRODES (1978) Soil Science, 125, p. 377 Perdue, Reuter, Ghosal, (1980) Geochim. Cosmochim. Acta, 44, p. 1841 Paxéus, Wedborg, (1985) Anal. Chim. Acta, 169, p. 87 Leunberger, Schindler, Application of integral pk spectrometry to the titration curve of fulvic acid (1986) Analytical Chemistry, 58, p. 1471 Andres, Romero, Gavilan, (1987) Talanta, 34, p. 583 Schnitzer, Goshi, (1979) J. Indian Chem. Soc., 61, p. 1090 Godinho, Aleixo, (1981) Anal. Biochem., 112, p. 323 Godinho, Aleixo, Hora Alves, (1982) Anal. Biochem., 123, p. 244 Godinho, Aleixo, Hora Alves, (1985) An. Acad. Brasil. Ciênc., 57, p. 305 Aleixo, Godinho, (1987) Quim. Nova., 10, p. 83 Seymour, Clayton, Fernando, Determination of pKa values of acid components in atmospheric condensates by linearization of segmented titration curves (1977) Analytical Chemistry, 49, p. 1429 Pehrsson, Ingman, Johansson, (1976) Talanta, 23, p. 769 Feuerstein, Eberlet, (1979) Naturwissenschaften, 66, p. 572 Perdue, (1978) Geochim. Cosmochim. Acta, 42, p. 1351 Ephraim, Marinsky, (1986) Environ. Sci. Technol., 20, p. 354 Tipping, Reddy, Hurley, (1990) Environ. Sci. Technol., 24, p. 1700