NanoRelease Consumer Products Consortium

R. Canady
NeutralScience L3C,
United States

Keywords: exposure, nanoparticle, measurement, risk assessment

Summary:

The NanoRelease Consumer Products project was initiated in 2011 as an independent, self-organized consortium of experts across stakeholder groups and nations to explore gaps in data and methods to characterize potential exposure from consumer applications of nanofillers. The initial gaps identified by the project (Froggett et al 2014; Kaiser et al 2014) included lack of analytic methods to quantitatively characterize the elements of released materials that were relevant to understanding occurrence or variation in biologically relevant dose caused by addition of nanofillers. The project further elaborated variation in materials (Kingston et al 2014) and life cycle stages (Nowack et al 2013) with respect to the anticipated release rates and release mechanisms for which analytic methods should be specified. The project also identified variation in sampling and analytic methods across published and ongoing studies of release (Canady et al 2013; Harper et al 2015) that indicated a first order need to understand the effects of sample generation and handling methods on the nature of released materials prior to proceeding with analytic methods development. As a result the project initiated inter-laboratory sample generation trials relevant to two release mechanisms for a model nanofiller in polymers. The design of the trials by laboratories across North America, Europe, and Asia will be briefly described and placed in context of standards development needs currently under discussion. Froggett et al 2014 Review of literature reporting release for a nanomaterial composite www.particleandfibretoxicology.com/content/11/1/17 Kingston et al 2014 Release Characteristics of Selected Carbon Nanotube Polymer Composites. http://dx.doi.org/10.1016/j.carbon.2013.11.042 Nowack et al 2013 Potential release scenarios for carbon nanotubes used in composites. http://www.sciencedirect.com/science/article/pii/S0160412013000834 Canady et al 2013 Literature review and interviews with labs doing release work for MWCNT – polymer http://www.ilsi.org/ResearchFoundation/RSIA/Documents/NanoRelease%20Consumer%20Products%20Phase%202.5%20Report.pdf Kaiser et al 2014 Methods for the Measurement of Release of MWCNTs from MWCNT-Polymer Composites http://www.ilsi.org/ResearchFoundation/RSIA/Documents/Methods%20for%20Measuring%20Release%20of%20MWCNTs%20from%20polymer%20composites%20-%20monograph%20version.pdf Harper, et al 2015 Measuring Nanomaterial Release from Carbon Nanotube Composites:. http://iopscience.iop.org/article/10.1088/1742-6596/617/1/012026/meta