Article in Chemistry World. What’s interesting is the part about nanoparticles being generated from silver and copper surfaces simply from exposure to moisture (by implication in the presence of oxygen) This is from work by Hutchinson et al. (ACS Nano, 2011, 5 (11), pp 8950–8957, DOI: 10.1021/nn2031319). In their abstract they say
“The discovery that AgNPs and CuNPs are generated spontaneously from manmade objects implies that humans have long been in direct contact with these nanomaterials and that macroscale objects represent a potential source of incidental nanoparticles in the environment.”
Have silver nanoparticles been affecting our environment for years?