Arturo A Keller

Summary

Affiliation: University of California
Country: USA

Publications

  1. pmc Increased mobility of metal oxide nanoparticles due to photo and thermal induced disagglomeration
    Dongxu Zhou
    Bren School of Environmental Science and Management and University of California Center for Environmental Implications of Nanotechnology, University of California Santa Barbara, Santa Barbara, California, United States of America
    PLoS ONE 7:e37363. 2012
  2. pmc Photoinduced disaggregation of TiO₂ nanoparticles enables transdermal penetration
    Samuel W Bennett
    University of California Center on the Environmental Implications of Nanotechnology and Bren School of Environmental Science and Management, University of California Santa Barbara, Santa Barbara, California, United States of America
    PLoS ONE 7:e48719. 2012
  3. pmc Toxicity of nano-zero valent iron to freshwater and marine organisms
    Arturo A Keller
    University of California Center for Environmental Implications of Nanotechnology, Bren School of Environmental Science and Management, University of California Santa Barbara, Santa Barbara, California, United States of America
    PLoS ONE 7:e43983. 2012
  4. doi request reprint Stability and aggregation of metal oxide nanoparticles in natural aqueous matrices
    Arturo A Keller
    University of California, Santa Barbara, USA
    Environ Sci Technol 44:1962-7. 2010
  5. ncbi request reprint Hydrophobic hollow fiber membranes for treating MTBE-contaminated water
    A A Keller
    Bren School of Environmental Science and Management, University of California, Santa Barbara, Santa Barbara, California 93106, USA
    Environ Sci Technol 35:1875-9. 2001
  6. ncbi request reprint Assessing the US Clean Water Act 303(d) listing process for determining impairment of a waterbody
    Arturo A Keller
    Bren School, University of California, Santa Barbara, CA, USA
    J Environ Manage 86:699-711. 2008
  7. doi request reprint Partitioning of hydrophobic pesticides within a soil-water-anionic surfactant system
    Peng Wang
    Bren School of Environmental Science and Management, University of California, Santa Barbara, CA 93106, USA
    Water Res 43:706-14. 2009
  8. doi request reprint Implementation of a multidisciplinary approach to solve complex nano EHS problems by the UC Center for the Environmental Implications of Nanotechnology
    Tian Xia
    Division of NanoMedicine, Department of Medicine, UCLA, Los Angeles, California 90095, USA
    Small 9:1428-43. 2013
  9. doi request reprint Mobility of capped silver nanoparticles under environmentally relevant conditions
    Beng Joo Reginald Thio
    Bren School of Environmental Science and Management, University of California at Santa Barbara, California 93106, United States
    Environ Sci Technol 46:6985-91. 2012
  10. doi request reprint Sorption and desorption of atrazine and diuron onto water dispersible soil primary size fractions
    Peng Wang
    Bren School of Environmental Science and Management, University of California, 3420 Bren Hall, Santa Barbara, CA 93106, USA
    Water Res 43:1448-56. 2009

Collaborators

Detail Information

Publications38

  1. pmc Increased mobility of metal oxide nanoparticles due to photo and thermal induced disagglomeration
    Dongxu Zhou
    Bren School of Environmental Science and Management and University of California Center for Environmental Implications of Nanotechnology, University of California Santa Barbara, Santa Barbara, California, United States of America
    PLoS ONE 7:e37363. 2012
    ..This phenomenon warrants attention since it is likely that metal oxide nanoparticles will experience these natural stimuli during their transport in the environment...
  2. pmc Photoinduced disaggregation of TiO₂ nanoparticles enables transdermal penetration
    Samuel W Bennett
    University of California Center on the Environmental Implications of Nanotechnology and Bren School of Environmental Science and Management, University of California Santa Barbara, Santa Barbara, California, United States of America
    PLoS ONE 7:e48719. 2012
    ..These results suggest that photoinduced disaggregation may have important health implications...
  3. pmc Toxicity of nano-zero valent iron to freshwater and marine organisms
    Arturo A Keller
    University of California Center for Environmental Implications of Nanotechnology, Bren School of Environmental Science and Management, University of California Santa Barbara, Santa Barbara, California, United States of America
    PLoS ONE 7:e43983. 2012
    ..This information can be used to design a risk management strategy to arrest the transport of injected nZVI beyond the intended remediation area, by injecting inert calcium salts as a barrier to transport...
  4. doi request reprint Stability and aggregation of metal oxide nanoparticles in natural aqueous matrices
    Arturo A Keller
    University of California, Santa Barbara, USA
    Environ Sci Technol 44:1962-7. 2010
    ..8 microm s(-1) V(-1) cm. These results are key for designing and interpreting nanoparticle ecotoxicity studies in various environmental conditions...
  5. ncbi request reprint Hydrophobic hollow fiber membranes for treating MTBE-contaminated water
    A A Keller
    Bren School of Environmental Science and Management, University of California, Santa Barbara, Santa Barbara, California 93106, USA
    Environ Sci Technol 35:1875-9. 2001
    ..MTBE removal is a strong function of membrane length, water flowrate, and solution temperature but is almost independent of gas-phase parameters...
  6. ncbi request reprint Assessing the US Clean Water Act 303(d) listing process for determining impairment of a waterbody
    Arturo A Keller
    Bren School, University of California, Santa Barbara, CA, USA
    J Environ Manage 86:699-711. 2008
    ....
  7. doi request reprint Partitioning of hydrophobic pesticides within a soil-water-anionic surfactant system
    Peng Wang
    Bren School of Environmental Science and Management, University of California, Santa Barbara, CA 93106, USA
    Water Res 43:706-14. 2009
    ..Our results showed that the effect of exchangeable cations and sorption of HOC onto the surfactant precipitates needs to be considered to accurately predict HOC behavior within soil-water-anionic surfactant systems...
  8. doi request reprint Implementation of a multidisciplinary approach to solve complex nano EHS problems by the UC Center for the Environmental Implications of Nanotechnology
    Tian Xia
    Division of NanoMedicine, Department of Medicine, UCLA, Los Angeles, California 90095, USA
    Small 9:1428-43. 2013
    ....
  9. doi request reprint Mobility of capped silver nanoparticles under environmentally relevant conditions
    Beng Joo Reginald Thio
    Bren School of Environmental Science and Management, University of California at Santa Barbara, California 93106, United States
    Environ Sci Technol 46:6985-91. 2012
    ..Ag NPs were found to be highly mobile under these environmentally relevant conditions, with little or no deposition...
  10. doi request reprint Sorption and desorption of atrazine and diuron onto water dispersible soil primary size fractions
    Peng Wang
    Bren School of Environmental Science and Management, University of California, 3420 Bren Hall, Santa Barbara, CA 93106, USA
    Water Res 43:1448-56. 2009
    ..Our results suggest that attention should be paid to the pesticide sorbed to the smallest colloids, the water dispersible fraction, which can be potentially mobilized under field conditions, leading to wide spreading of contamination...
  11. doi request reprint Magnetic permanently confined micelle arrays for treating hydrophobic organic compound contamination
    Peng Wang
    Bren School of Environmental Science and Management, and Department of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, USA
    J Am Chem Soc 131:182-8. 2009
    ..All of the results showed that Mag-PCMAs are reusable sorbents for fast, convenient, and highly efficient removal of HOCs from contaminated media...
  12. ncbi request reprint Soil particle-size dependent partitioning behavior of pesticides within water-soil-cationic surfactant systems
    Peng Wang
    Bren School of Environmental Science and Management, University of California, Santa Barbara, CA 93106, USA
    Water Res 42:3781-8. 2008
    ..This would enhance sorption of the HOCs onto the immobile fractions (silt and sand fractions) rather than the potentially mobile clay fractions...
  13. ncbi request reprint Particle-size dependent sorption and desorption of pesticides within a water-soil-nonionic surfactant system
    Peng Wang
    Bren School of Environmental Science and Management, University of California, Santa Barbara 93106, USA
    Environ Sci Technol 42:3381-7. 2008
    ..These results may be applicable to many other hydrophobic organic compounds such as polyaromatic hydrocarbons (PAHs) and polychlorinated biphenyls (PCBs) strongly sorbed onto soils and sediments...
  14. doi request reprint Clay particles destabilize engineered nanoparticles in aqueous environments
    Dongxu Zhou
    Bren School of Environmental Science and Management, University of California, 3420 Bren Hall, Bren School, Santa Barbara, California 93106 5131, United States
    Environ Sci Technol 46:7520-6. 2012
    ....
  15. pmc Environmental feedbacks and engineered nanoparticles: mitigation of silver nanoparticle toxicity to Chlamydomonas reinhardtii by algal-produced organic compounds
    Louise M Stevenson
    Department of Ecology, Evolution and Marine Biology, University of California Santa Barbara, Santa Barbara, California, United States of America
    PLoS ONE 8:e74456. 2013
    ..Our findings demonstrate how the feedback between aquatic organisms and their environment may impact the toxicity and ecological effects of engineered nanoparticles. ..
  16. doi request reprint Accumulation and toxicity of metal oxide nanoparticles in a soft-sediment estuarine amphipod
    Shannon K Hanna
    Bren School of Environmental Science and Management, University of California Santa Barbara, Santa Barbara, CA 93106, United States University of California Center for the Environmental Implications of Nanotechnology, University of California Santa Barbara, Santa Barbara, CA 93106, United States Electronic address
    Aquat Toxicol 142:441-6. 2013
    ..Our results indicate that ZnO and CuO ENPs, but not NiO ENPs, are toxic to L. plumulosus and that ZnO toxicity primarily results from Zn ion exposure while CuO toxicity is due to nanoparticle exposure...
  17. doi request reprint Influence of natural organic matter on the aggregation and deposition of titanium dioxide nanoparticles
    Beng Joo Reginald Thio
    Bren School of Environmental Science and Management, University of California, Santa Barbara, 3420 Bren Hall, Santa Barbara, CA 93106 5131, United States
    J Hazard Mater 189:556-63. 2011
    ....
  18. pmc Influence of material properties on TiO2 nanoparticle agglomeration
    Dongxu Zhou
    Bren School of Environmental Science and Management, University of California Santa Barbara, Santa Barbara, California, United States of America University of California Center of Environmental Implications of Nanotechnology, University of California Los Angeles, Los Angeles, California, United States of America
    PLoS ONE 8:e81239. 2013
    ....
  19. doi request reprint Magnetic pollen grains as sorbents for facile removal of organic pollutants in aqueous media
    Beng Joo Reginald Thio
    Bren School of Environmental Science and Management, University of California, Santa Barbara, 3420 Bren Hall, Santa Barbara, CA 93106 5131, USA
    J Hazard Mater 194:53-61. 2011
    ..The high HOC sorption of the ragweed pollen allows it to have potential remediation application in the field under realistic conditions...
  20. doi request reprint Impacts of metal oxide nanoparticles on marine phytoplankton
    Robert J Miller
    Department of Ecology, Bren School of Environmental Science and Management, University of California, Santa Barbara, California 93106, USA
    Environ Sci Technol 44:7329-34. 2010
    ..NEC could not be estimated for the other taxa but were within the range of 500-1000 μg L(-1). Our results suggest that effects of metal oxide NPs on marine organisms is likely to vary with particle type and organism taxonomy...
  21. doi request reprint Role of morphology in the aggregation kinetics of ZnO nanoparticles
    Dongxu Zhou
    Bren School of Environmental Science and Management, University of California, Santa Barbara, CA 93109, USA
    Water Res 44:2948-56. 2010
    ..To our knowledge, this is the first study to report the effect of particle morphology on nanoparticle aggregation, which outlines the importance of accounting morphology into environmental transport assessment of nanoparticles...
  22. doi request reprint Stability, metal leaching, photoactivity and toxicity in freshwater systems of commercial single wall carbon nanotubes
    Samuel W Bennett
    University of California, Center for Environmental Implications of Nanotechnology, Santa Barbara, CA, USA
    Water Res 47:4074-85. 2013
    ....
  23. pmc TiO2 nanoparticles are phototoxic to marine phytoplankton
    Robert J Miller
    Bren School of Environmental Science and Management, University of California Santa Barbara, Santa Barbara, California, United States of America
    PLoS ONE 7:e30321. 2012
    ..Phototoxicity must be considered when evaluating environmental impacts of nanomaterials, many of which are photoactive...
  24. doi request reprint Adsorption of perchlorate and other oxyanions onto magnetic permanently confined micelle arrays (Mag-PCMAs)
    Kristin K Clark
    Bren School of Environmental Science and Management, University of California, Santa Barbara, 3420 Bren Hall, Santa Barbara, CA 93106 5131, USA
    Water Res 46:635-44. 2012
    ..Desorption for reuse was successful at pH 10. This reusable magnetic sorbent can thus be used to rapidly remove target anions such as perchlorate from water in the presence or absence of other oxyanions...
  25. ncbi request reprint Uptake, accumulation, and biotransformation of metal oxide nanoparticles by a marine suspension-feeder
    Milka O Montes
    University of California Center for Environmental Implications of Nanotechnology, Bren School of Environmental Science and Management, University of California, Santa Barbara, CA 93106, USA
    J Hazard Mater 225:139-45. 2012
    ..Differences in ENP solubility affect ENP uptake, excretion, and accumulation in mussels. Our study highlights the potential role of marine suspension feeders in biotransformation of ENPs...
  26. ncbi request reprint The University of California Center for the Environmental Implications of Nanotechnology
    Hilary A Godwin
    University of California, School of Public Health, Los Angeles, CA, USA
    Environ Sci Technol 43:6453-7. 2009
    ..Assessing nanomaterialsfor human health and ecotoxicological impact can be well aided by using high-throughput laboratory methods...
  27. doi request reprint Natural organic matter removal by adsorption onto magnetic permanently confined micelle arrays
    Hongtao Wang
    State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
    J Hazard Mater 194:156-61. 2011
    ..It was feasible to reuse Mag-PCMAs after regeneration. These results indicate that Mag-PCMAs can be very attractive for the removal of NOM from aqueous matrices...
  28. ncbi request reprint Chemically enhanced primary treatment (CEPT) for removal of carbon and nutrients from municipal wastewater treatment plants: a case study of Shanghai
    Hongtao Wang
    State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
    Water Sci Technol 60:1803-9. 2009
    ..The results of this study provide scientific evidence for the upgrade of the Bailonggang Wastewater Treatment Plant...
  29. doi request reprint Nanomaterials in the environment: from materials to high-throughput screening to organisms
    Courtney R Thomas
    Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, United States
    ACS Nano 5:13-20. 2011
    ..Methods of decreasing the observed toxic effects will also be discussed as an integral component of the UC CEIN's activity in developing safer nanomaterials to lessen their environmental impacts...
  30. doi request reprint How do stream organisms respond to, and influence, the concentration of titanium dioxide nanoparticles? A mesocosm study with algae and herbivores
    Konrad J Kulacki
    Department of Ecology, Evolution and Marine Biology, University of California Santa Barbara, Santa Barbara, California, USA
    Environ Toxicol Chem 31:2414-22. 2012
    ..The results have important implications for understanding how efficiently nTiO(2) is removed from surface waters and the potential transfer of nanomaterials to higher trophic levels...
  31. doi request reprint Adsorption of hydrophobic organic compounds onto a hydrophobic carbonaceous geosorbent in the presence of surfactants
    Peng Wang
    Bren School of Environmental Science and Management, University of California, Santa Barbara, California 93106, USA
    Environ Toxicol Chem 27:1237-43. 2008
    ..Our results showed that the presence of surfactant can significantly decrease HOC adsorption onto hydrophobic environmental media and, thus, is important in predicting HOC fate and transport in the environment...
  32. ncbi request reprint Kinetics and products of reactions of MTBE with ozone and ozone/hydrogen peroxide in water
    Marie M Mitani
    Bren School of Environmental Science and Management, University of California, 4666 Physical Sciences North, Santa Barbara, CA 93106 5131, USA
    J Hazard Mater 89:197-212. 2002
    ..A reaction pathway for mineralization of MTBE was also explored. Under continuously stirred flow reactor (CSTR) conditions, addition of H(2)O(2) markedly increases the rate and degree of degradation of MTBE by O(3)...
  33. ncbi request reprint A framework for assessing the impact of land use policy on community exposure to air toxics
    Melvin R Willis
    Donald Bren School of Environmental Science and Management, University of California, Santa Barbara, CA 93106, USA
    J Environ Manage 83:213-27. 2007
    ..We present a case study to illustrate application of the model. LUAIRTOX, the interactive spreadsheet model that applies our methodology to the California data, is available at http://www2.bren.ucsb.edu/~mwillis/LUAIRTOX.htm...
  34. ncbi request reprint Partitioning of hydrophobic organic compounds within soil-water-surfactant systems
    Peng Wang
    Bren School of Environmental Science and Management, University of California, Santa Barbara, CA 93106, USA
    Water Res 42:2093-101. 2008
    ..Below a sub-saturation sorption range (~20 g/kg), under the same amount of BC sorbed, a soil with lower CEC tends to have higher K(ss) than the one with higher CEC...
  35. doi request reprint Effects and implications of trophic transfer and accumulation of CeO2 nanoparticles in a marine mussel
    Jon R Conway
    University of California Center for Environmental Implications of Nanotechnology, Bren School of Environmental Science and Management, University of California, Santa Barbara, California 93106, United States
    Environ Sci Technol 48:1517-24. 2014
    ..These results show the feedback between ENM toxicity and transport and the likelihood of biological mediation in the fate and transport of ENMs in aquatic environments. ..
  36. ncbi request reprint Measuring the influence of solution chemistry on the adhesion of au nanoparticles to mica using colloid probe atomic force microscopy
    Beng Joo Reginald Thio
    Bren School of Environmental Science and Management, University of California, Santa Barbara, 3420 Bren Hall, Santa Barbara, California 93106 5131, USA
    Langmuir 26:13995-4003. 2010
    ....
  37. ncbi request reprint Measurement of Henry's law constant for methyl tert-butyl ether using solid-phase microextraction
    B G Bierwagen
    Bren School of Environmental Science and Management, University of California, Santa Barbara 93106, USA
    Environ Toxicol Chem 20:1625-9. 2001
    ..The Arrhenius plot for MTBE indicates that ln(HMBTE) = 6.85 - 2,900 T(-1), with T in K. At 25 degrees C, HMBTE = 0.0555 +/- 0.0122...
  38. ncbi request reprint Natural and engineered nano and colloidal transport: role of zeta potential in prediction of particle deposition
    Peng Wang
    Bren School of Environmental Science and Management, University of California, Santa Barbara, California 93106
    Langmuir 25:6856-62. 2009
    ....