| The test method is applicable for the determination of the size of inorganic nanoparticles, metal and metal oxides (e.g. Ag, Au, TiO2 etc.), with size ranges of 10 nm to 100 nm in aqueous suspensions. Particle number concentrations that can be determined in aqueous suspensions range from 105 to 109 particles/L which corresponds (depending on the type of material) to mass concentrations in the range of 1 to 1,000 ng/L. Actual numbers depend on the type of mass spectrometer used and the type of nanoparticle analysed. | | The test method is applicable for the determination of the size of inorganic nanoparticles, metal and metal oxides (e.g. Ag, Au, TiO2 etc.), with size ranges of 10 nm to 100 nm in aqueous suspensions. Particle number concentrations that can be determined in aqueous suspensions range from 105 to 109 particles/L which corresponds (depending on the type of material) to mass concentrations in the range of 1 to 1,000 ng/L. Actual numbers depend on the type of mass spectrometer used and the type of nanoparticle analysed. |