Synthetic TiO2 nanoparticle emission from exterior facades into the aquatic environment.

摘要: We present direct evidence of the release synthetic nanoparticles from urban applications into aquatic environment. investigated TiO2 particles as these are used in large quantities exterior paints whitening pigments and to some extent also nano-size range. TiO2 were traced facade discharge surface waters. a centrifugation based sample preparation which recovers between roughly 20 300 nm. Analytical electron microscopy revealed that detached new aged by natural weather conditions then transported runoff discharged natural, receiving Microscopic investigations confirmed bulk chemical analysis. By combining results microscopic with analysis we calculated number densities runoff.