Gulson and his team applied the lotions, which incorporated the nontoxic, nonradioactive isotope 68Zn, twice daily for five consecutive days to the skin of study participants and collected blood and urine samples (Toxicol. Sci., DOI: 10.1093/toxsci/kfq243). What Gulson’s team found was that after two days, they were able to detect the isotope in all the volunteers’ samples, indicating that zinc from the particles, regardless of whether they were nanoscale or slightly larger, had been absorbed through the sunbathers’ skin.
by Lauren K. Wolf |
August 08, 2011