Titration river water humic substances

Because of the considerable potential of titration calorimetry as an analytical technique for characterization of the acidic functional groups of humic substances, our studies have been extended to river water humic substances. In this paper, results are presented for the thermochemical characterization of the acidic functional groups of river water humic substances from two quite different river systems 1) the Satilla River in southeastern Georgia, and 2) the Williamson River in southern Oregon. [Pg.103]

Titration Calorimetry of River Water Humic Substances. The concentration of river water humic substances used in all experi-... [Pg.104]

Thermometric Titration of River Water Humic Substances, The... [Pg.105]

The average AHj values for ionization of carboxyl groups and titratable phenolic groups and the average pKg of the titratable phenolic groups of river water humic substances are given in Table II. The previously reported AHg and pKg values for soil humic acid (28) are included for comparison. As previously mentioned, the equilibrium constants for neutralization of car-... [Pg.109]

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