Protonation equilibria of marine dissolved organic matter

Journal Article · Mon Jan 01 04:00:00 EST 1979 · Limnol. Oceanogr.; (United States)

DOI:https://doi.org/10.4319/lo.1979.24.1.0145· OSTI ID:6809653

Huizenga, D L; Kester, D R

Dissolved organic matter isolated by activated charcoal adsorption from river, estuarine, coastal, and open ocean waters was examined by acid-base titration in 0.7 molal NaClO/sub 4/ medium. Two types of sites were present in the pH range 2 to 8. One set of sites with an inflection point at pH 3.5 amounted to 11 ..mu..mol of sites per milligram of organic carbon. These sites were present in all samples and showed uniform properties among the samples from different marine environments. A second set of sites with an inflection point at pH 6.5 was present in some samples and amounted to < 1 ..mu..mol of sites per milligram of organic carbon. These results provide a characterization of the acid-base equilibria of marine organic matter which is required in an assessment of possible trace metal-organic interactions in seawater.

• Research Organization: Univ. of Rhode Island, Kingston
• OSTI ID: 6809653
• Journal Information: Limnol. Oceanogr.; (United States), Journal Name: Limnol. Oceanogr.; (United States) Vol. 24:1; ISSN LIOCA
• Country of Publication: United States
• Language: English

Related Subjects

520100* -- Environment
Aquatic-- Basic Studies-- (-1989)
54 ENVIRONMENTAL SCIENCES
DATA
EQUILIBRIUM
EXPERIMENTAL DATA
HYDROGEN COMPOUNDS
INFORMATION
NUMERICAL DATA
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC MATTER
OXYGEN COMPOUNDS
PH VALUE
QUANTITY RATIO
SEAWATER
TITRATION
WATER
WATER CHEMISTRY