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Reports from N. von Goetz and Co-Researchers Add New Data to Findings in Environmental Science and Technology

February 21, 2014

By a News Reporter-Staff News Editor at Ecology, Environment & Conservation -- Researchers detail new data in Environmental Science and Technology. According to news reporting originating in St. Gallen, Switzerland, by VerticalNews journalists, research stated, "Engineered nanoparticles (ENP) are increasingly used to functionalize textiles taking advantage, e.g., of the antimicrobial activity of silver (Ag)-ENP or the UV-absorption of titania (TiO2)-ENP. Mobilization and migration of ENPs from the textile into human sweat can result in dermal exposure to these nanoobjects and their aggregates and agglomerates (NOAA)."

The news reporters obtained a quote from the research, "In this study we assessed exposure to NOAA migrating from commercially available textiles to artificial sweat by an experimental setup that simulates wear-and-tear during physical activity. By combining physical stress with incubation in alkaline and acidic artificial sweat solutions we experimentally realized a worst case scenario for wearing functionalized textiles during sports activities. This experimental approach is not limited to NOAA, but can be used for any other textile additive. Out of four investigated textiles, one T-shirt and one pair of trousers with claimed antimicrobial properties were found to release Ag

According to the news reporters, the research concluded: "In comparison with other human exposure pathways, dermal exposure to NOAA from textiles can be considered comparably minor for TiO2-NOAA, but not for Ag-NOAA."

For more information on this research see: Migration of Ag- and TiO2-(Nano)particles from Textiles into Artificial Sweat under Physical Stress: Experiments and Exposure Modeling. Environmental Science & Technology, 2013;47(17):9979-9987. Environmental Science & Technology can be contacted at: Amer Chemical Soc, 1155 16TH St, NW, Washington, DC 20036, USA. (American Chemical Society -; Environmental Science & Technology -

Our news correspondents report that additional information may be obtained by contacting N. von Goetz, Empa Swiss Fed Labs Mat Sci & Technol, Lab Adv Fibers, CH-9014 St Gallen, Switzerland. Additional authors for this research include C. Lorenz, L. Windler, B. Nowack, M. Heuberger and K. Hungerbuhler.

Keywords for this news article include: Europe, St. Gallen, Switzerland, Environmental Science and Technology

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Source: Ecology, Environment & Conservation

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