| Main Title |
Comparison of Sorption Energetics for Hydrophobic Organic Chemicals by Synthetic and Natural Sorbents from Methanol/Water Solvent Mixtures. |
| Author |
Woodburn, K. B. ;
Lee, L. S. ;
Rao, P. S. C. ;
Delfino, J. J. ;
|
| CORP Author |
Florida Univ., Gainesville.;Robert S. Kerr Environmental Research Lab., Ada, OK. |
| Publisher |
c1989 |
| Year Published |
1989 |
| Report Number |
EPA-R-811144; EPA/600/J-89/081; |
| Stock Number |
PB90-103649 |
| Additional Subjects |
Organic chemistry ;
Soil chemistry ;
Sorbents ;
Liquid chromatography ;
Aromatic polycyclic hydrocarbons ;
Enthalpy ;
Entropy ;
Thermodynamics ;
Halohydrocarbons ;
Absorption ;
Comparison ;
Reprints ;
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB90-103649 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
9p |
| Abstract |
Reversed-phase liquid chromatography (RPLC) was used to investigate the thermodynamics and mechanisms of hydrophobic organic chemical retention from methanol/water solvent mixtures. The enthalpy-entropy compensation model was used to infer that the hydrophobic sorptive mechanisms were different for polycyclic aromatic hydrocarbons (PAHs) and monohalobenzenes compared with alkylbenzenes in methanol/water RPLC systems. The estimated compensation temperatures beta for the two retention mechanisms were essentially independent of the organic cosolvent content (35-80% methanol by volume) and RPLC chain length (C-2-C-8). Sorption of four PAHs by Webster surface soil from 30/70 methanol/water solution at three temperatures was measured by the batch equilibration technique. A beta value of 506 K was calculated by using these data and was within the range of beta values estimated from the RPLC data (471-762K). This suggests that the sorptive mechanisms were similar for PAH retention by the RPLC sorbents and the Webster soil from the binary mixed solvent. |
| Supplementary Notes |
Pub. in Environmental Science and Technology v23 n4 p407-413 Apr 89. Sponsored by Robert S. Kerr Environmental Research Lab., Ada, OK. |
| NTIS Title Notes |
Journal article. |
| Title Annotations |
Reprint: Comparison of Sorption Energetics for Hydrophobic Organic Chemicals by Synthetic and Natural Sorbents from Methanol/Water Solvent Mixtures. |
| Category Codes |
48E; 68G; 99F |
| NTIS Prices |
PC A02/MF A01 |
| Primary Description |
600/15 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
932617063 |
| Origin |
NTIS |
| Type |
CAT |
