Molecular size of aquatic humic substances
Organic Geochemistry
By: E.M. Thurman, R.L. Wershaw, Ronald L. Malcolm, and D.J. Pinckney
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Abstract
Aquatic humic substances, which account for 30 to 50% of the organic carbon in water, are a principal component of aquatic organic matter. The molecular size of aquatic humic substances, determined by small-angle X-ray scattering, varies from 4.7 to 33 Å in their radius of gyration, corresponding to a molecular weight range of 500 to greater than 10,000. The aquatic fulvic acid fraction contains substances with molecular weights ranging from 500 to 2000 and is monodisperse, whereas the aquatic humic acid fraction contains substances with molecular weights ranging from 1000 to greater than 10,000 and is generally polydisperse.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Molecular size of aquatic humic substances |
| Series title | Organic Geochemistry |
| DOI | 10.1016/0146-6380(82)90005-5 |
| Volume | 4 |
| Issue | 1 |
| Year Published | 1982 |
| Language | English |
| Publisher | Elsevier |
| Description | 9 p. |
| First page | 27 |
| Last page | 35 |
| Country | United States |
| State | Arizona, Colorado, Hawaii, Florida, Massachusetts, Minnesota, North Dakota, South Dakota, Wyoming |