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http://ipicyt.repositorioinstitucional.mx/jspui/handle/1010/1938| Effects of surface-engineered nanoparticle-based dispersants for marine oil spills on the model organism Artemia franciscana | |
| April Rodd Megan Creighton Charles A Vaslet JOSE RENE RANGEL MENDEZ Robert H Hurt Agnes Kane | |
| Acceso Abierto | |
| Atribución-NoComercial-SinDerivadas | |
| http://dx.doi.org/10.1021/es500892m | |
| "Fine particles are under active consideration as alternatives to chemical dispersants for large-scale petroleum spills. Fine carbon particles with engineered surface chemistry have been shown to stabilize oil-in-water emulsions, but the environmental impacts of large-scale particle introduction to the marine environment are unknown. Here we study the impact of surface-engineered carbon-black materials on brine shrimp (Artemia franciscana) as a model marine microcrustacean. Mortality was characterized at 50–1000 mg/L, and levels of heat shock protein 70 (hsp70) were characterized at sublethal particle concentrations (25–50 mg/L). Functionalized carbon black (CB) nanoparticles were found to be nontoxic at all concentrations, while hydrophobic (annealed) and as-produced CB induced adverse effects at high concentrations. CB was also shown to adsorb benzene, a model hydrocarbon representing the more soluble and toxic low-molecular weight aromatic fraction of petroleum, but the extent of adsorption was insufficient to mitigate benzene toxicity to Artemia in coexposure experiments. At lower benzene concentrations (25–75 mg/L), coexposure with annealed and as-produced CB increased hsp70 protein levels. This study suggests that surface functionalization for increased hydrophilicity can not only improve the performance of CB-based dispersants but also reduce their adverse environmental impacts on marine organisms." | |
| American Chemical Society | |
| 2014 | |
| Artículo | |
| Environ. Sci. Technol. 2014, 48, 11, 6419-6427 | |
| INGENIERÍA Y TECNOLOGÍA DEL MEDIO AMBIENTE | |
| Versión publicada | |
| publishedVersion - Versión publicada | |
| Aparece en las colecciones: | Publicaciones Científicas Ciencias Ambientales |
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|---|---|---|---|
| EnvironSciTechnol48(2014)6419.pdf | 4.15 MB | Adobe PDF | Visualizar/Abrir |