Recovery rates of certain polar and non-polar volatile organic compounds were evaluated for bias associated with the use of a Nafion® dryer in the analyses of environmental samples. Analyses of dryer inlet verses dryer outlet concentrations of specific compounds were used to assess the extent of Nafion® bias. A select group of 22 polar and 6 non-polar compounds, as well as historical data from other authors was used to develop a stepwise multiple regression model to aid in predicting recovery rates. Specific compound physical parameters used in this model include water solubility, hydrogen bonding capacity, and dipole moment. The overall R squared or predictive value of this model is 0.7885. Typical recovery rates of non-polar and extremely polar compounds are 100% and <10% respectively. Compounds that possess moderate intermolecular interactions (aldehydes, ethers, esters, and ketones) resulted in recovery rates between 10% and 100%.
| Identifer | oai:union.ndltd.org:arizona.edu/oai:arizona.openrepository.com:10150/291624 |
| Date | January 1992 |
| Creators | Krotenberg, Marshall Eric, 1962- |
| Contributors | Crutchfield, Clifton |
| Publisher | The University of Arizona. |
| Source Sets | University of Arizona |
| Language | en_US |
| Detected Language | English |
| Type | text, Thesis-Reproduction (electronic) |
| Rights | Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author. |
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