Association of hydrophobic organic compounds with dissolved organic matter in natural water systems may impact a contaminant's ability to transport across synthetic membranes. Importantly, these interactions can create interferences when monitoring ambient levels of contaminants with a potential for biouptake. The influence of water-quality matrix conditions on the transport and lipid uptake of five hydrophobic organic compounds of environmental concern was investigated by partnering semipermeable membranes with a model lipid phase in a batch dialysis system. Contaminants fell into two characteristic groups based on the response of transport and lipid uptake to exposure conditions: one for which behavior was largely independent of water-quality matrix conditions and one for which alterations to the bulk aqueous phase were impactful. For short exposure periods, the abiotic technique demonstrated the potential to qualitatively replicate the root-to-shoot translocation behavior of non-ionized hydrophobic organic compounds in plant systems.
| Identifer | oai:union.ndltd.org:RICE/oai:scholarship.rice.edu:1911/17497 |
| Date | January 2002 |
| Creators | Dalton, Sarah Kathryn |
| Contributors | Wiesner, Mark R. |
| Source Sets | Rice University |
| Language | English |
| Detected Language | English |
| Type | Thesis, Text |
| Format | 193 p., application/pdf |
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