Publication Details |
| Category | Text Publication |
| Reference Category | Journals |
| DOI | 10.1002/etc.5620210902 |
| Document | Shareable Link |
| Title (Primary) | Validation of a modified Flory-Huggins concept for description of hydrophobic organic compound sorption on dissolved humic substances |
| Author | Georgi, A.; Kopinke, F.-D. |
| Source Titel | Environmental Toxicology and Chemistry |
| Year | 2002 |
| Department | TUCHEM |
| Volume | 21 |
| Issue | 9 |
| Page From | 1766 |
| Page To | 1774 |
| Language | englisch |
| Abstract | Sorption coefficients (K-DOC) on dissolved organic matter (DOM) have been determined by means of solid-phase microextraction (SPME) for hydrophobic organic compounds (HOCs) of various classes, for example, polycyclic aromatic hydrocarbons (PAHs), noncondensed arenes, and alkanes. Relating the K-DOC values obtained to the octanol-water partition coefficients of the solutes results in class-specific correlations. Obviously, PAHs have a higher affinity to DOM than other HOCs with equal K-OW values. The different K-DOC to K-OW correlations can be combined into one general formula based on a modified Flory-Huggins concept. It permits the calculation of sorption coefficients from the solubility parameters (8) and K-OW values of the solutes and the solubility parameter of the sorbent. The latter value, which is specific to the DOM under consideration, can be determined from a single measured sorption coefficient. By applying the proposed Flory-Huggins concept, which is based on the presumption of nonspecific interactions between HOCs and DOM, the different affinities of PAHs, noncondensed arenes, and alkanes to DOM can be accurately predicted. |
| Persistent UFZ Identifier | https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=5506 |
| Georgi, A., Kopinke, F.-D. (2002): Validation of a modified Flory-Huggins concept for description of hydrophobic organic compound sorption on dissolved humic substances Environ. Toxicol. Chem. 21 (9), 1766 - 1774 10.1002/etc.5620210902 |
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