Fate and transport of titania nanoparticles in freshwater mesocosms
Titania nanoparticles are currently associated with air, soil, and water and with numerous products directed at human use and consumption (e.g., sunscreen, cosmetics, and food coatings). The environmental fate and transport of TiO2, or any nanomaterials entering dynamic aquatic environments are largely unknown. Because the physical and chemical properties of TiO2 are variable (size, surface chemistry, and composition), the movement, bioaccumulation, and toxicity of these materials are difficult to study in a complex ecosystem. Many metal oxide materials are durable and recalcitrant, and the accumulation of TiO2 in the environment could be significant over time and cause unforeseen impacts on ecosystems. Fate and transport of TiO2 nanomaterials in a bench-scale mesocosm system was assessed through nanomaterial partitioning and complexation in water, sediment, and tissue media characterized using inductively coupled plasma mass spectrometry and scanning electron microscopy with energy dispersive X-ray spectroscopy, respectively. Research data sets like these will build the foundation for future use in fate and transport of other nanomaterials in different water systems (fresh, estuarine, and marine) and in building empirical and process models that investigate environmental fate and transport and relevant freshwater ecological impacts of nanomaterials.
- Research Organization:
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Environmental Molecular Sciences Lab. (EMSL)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-76RL01830
- OSTI ID:
- 1039859
- Report Number(s):
- PNNL-SA-62622; 22690; 22690a; TRN: US201210%%81
- Resource Relation:
- Conference: Proceedings of the International Environmental Nanotechnology Conference: Applications and Implications, October 7-9, 2008, Chicago, Illinois
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
AIR
BIOLOGICAL ACCUMULATION
CHEMICAL PROPERTIES
CHEMISTRY
COATINGS
CONSUMER PRODUCTS
ECOSYSTEMS
FOOD
MASS SPECTROSCOPY
OXIDES
PLASMA
SCANNING ELECTRON MICROSCOPY
TOXICITY
TRANSPORT
WATER
X-RAY SPECTROSCOPY
nanomaterial
fate and transport
titania
Environmental Molecular Sciences Laboratory