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Role of Nanoporosity and Hydrophobicity in Sequestration and Bioavailability: Tests with Model Solids
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Alexander, Martin | - |
dc.contributor.author | Nam, Kyoungphile | - |
dc.date.accessioned | 2009-09-04T07:14:29Z | - |
dc.date.available | 2009-09-04T07:14:29Z | - |
dc.date.issued | 1998-01-01 | - |
dc.identifier.citation | Environ. Sci. Technol. 32 (1998), pp. 71–74. | en |
dc.identifier.issn | 0013-936X (print) | - |
dc.identifier.issn | 1520-5851 (online) | - |
dc.identifier.uri | https://hdl.handle.net/10371/8706 | - |
dc.description.abstract | Phenanthrene was rapidly and extensively mineralized by a bacterium in the presence of glass or polystyrene beads with no pores, silica beads with 2.5−15 nm pores, 3-aminopropyl-bonded silica beads with 6-nm pores, and diatomite beads with 5.4 μm pores. These beads sorbed 10−99% of the compound in 15 h, but 48−100% of the sorbed hydrocarbon was desorbed in 240 h. Although little phenanthrene was desorbed from octadecyl-bonded silica beads with 6-nm pores, the hydrocarbon was rapidly and extensively degraded. In contrast, the bacterium mineralized <7% of the phenanthrene sorbed to polystyrene beads with 5- or 300−400-nm pores, and little of the compound was desorbed. These findings are consistent with the hypothesis that sequestration and reduced bioavailability occur when hydrophobic compounds enter into nanopores having hydrophobic surfaces. | en |
dc.description.sponsorship | This research was supported by funds provided by the Gas
Research Institute, American Petroleum Institute, and Grant ES05950 from the National Institute of Environmental Health Sciences with funding provided by the U.S. EPA. | en |
dc.language.iso | en | - |
dc.publisher | American Chemical Society | en |
dc.title | Role of Nanoporosity and Hydrophobicity in Sequestration and Bioavailability: Tests with Model Solids | en |
dc.type | Article | en |
dc.contributor.AlternativeAuthor | 남경필 | - |
dc.identifier.doi | 10.1021/es9705304 | - |
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