The fate and transport of engineered nanoparticles (ENPs) such as titanium dioxide (Ti02) are of concern due to their increasing use in consumer products. Although analytical methods for detection and quantification of ENPs in environmental matrices are being developed, these methods are difficult, time consuming, and not easily validated for metal oxide ENPs where the metal of interest (e.g., Ti in TiO2) is abundant in the environment. This work aims to overcome these difficulties by synthesizing Ti02 nanoparticles �labeled� with rare earth elements. Synthetic conditions will be optimized to create particles consisting of a lanthanum oxide (La203) core surrounded by a Ti02 shell. X-ray diffraction, dynamic light scattering, electron microscopy, and zeta potential analysis will all be used to compare relevant characteristics of synthesized ENPs with commercial counterparts. Available techniques for ENP detection (e.g., inductively coupled plasma spectroscopy and instrument neutron activation analysis) will be validated with the synthesized particles.

Development of traceable metal oxide nanoparticles for environmental fate and transport studies

245th National Meeting (2013)

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