Comparative chemistry of submicron sized organic fractions in four rivers of the southeastern United States
Abstract
Investigations of 4 southeastern United States rivers show that greater than 80% of the dissolved organic carbon (DOC) is in a size fraction less than 13 Å in diameter. Total acidity values determined for organics less than 4500 but greater than 13 Å vary by a factor of only 3 among rivers and size fractions (2.29-6.22 meq/g organic matter). Although these values appear small in comparison to inorganic anions in the systems, they become increasingly important in low pH streams, representing up to 23% of the total milliequivalents of anionic charge available for binding.
- Publication:
-
Physics and Chemistry of the Earth
- Pub Date:
- 1980
- DOI:
- 10.1016/0079-1946(79)90128-9
- Bibcode:
- 1980PCE....12..463A