Record Display for the EPA National Library CatalogRECORD NUMBER: 3 OF 22
|Main Title||Effects of Linear Flow Velocity and Residence Time on the Retention of Non-Polar Aqueous Organic Analytes by Cartridges of Tenax-GC.|
|Author||Pankow, James F. ; Isabelle, Lorne M. ; Kristensen, Toni J. ;|
|CORP Author||Oregon Graduate Center, Beaverton.;Environmental Monitoring and Support Lab.-Cincinnati, OH.|
|Report Number||EPA-R-807898; EPA-600/J-82-306;|
|Additional Subjects||Organic compounds ; Diffusion ; Environmental surveys ; Water analysis ; Sorbents ; Pesticides ; Naphthalene ; Transport properties ; Chemical analysis ; Water pollution ; Reprints ; Tenax GC resins ; Water pollution detection ; Benzene/dichloro ; Benzene/trichloro ; Butadiene/hexachloro|
Strong evidence has been obtained which indicates that film diffusion controls the retention of non-polar organics of low aqueous solubility by the sorbent Tenax-GC. Model compounds which have been studied in this context include the four U.S. Environmental Protection Agency priority pollutants 0-dichlorobenzene, 1,2,4-trichlorobenzene, naphthalene, and hexachloro-1,3-butadiene. The data indicate that compounds such as these have large aqueous retention volumes on this sorbent. Once sorbed, little loss occurs for micrograms/l concentrations and sample volumes of several liters. Equations are developed which predict the percent recovery as a function of cartridge dimensions and sample volume flow rate. (Copyright (c) 1982 Elsevier Scientific Publishing Company).