Quantification of anthropogenic TiO₂ nanoparticles in soils and sediments combining size fractionation and trace element ratio

Abstract

Soils and sediments are the most important sinks for anthropogenic TiO2 nanoparticles. Therefore, it is important to assess their environmental impact and monitor their concentration in this media. Since these...

Atomic spectrometry update – a review of advances in environmental analysis

“…Barium was separated from the major interference elements in geological materials, river water and gas and oil brines using a double elution procedure with 2.5 M HCl followed by 2.0 M HNO 3 . The d 138 Ba value was determined by MC-ICP-MS. Dissolved gaseous Hg and reactive Hg fractions were purged 105 from 10 L batches of water samples aer addition of acidic SnCl 2 .…”

“…The occurrence of high concentrations of naturally occurring NPs is a major obstacle in the determination of engineered metal-NPs , as is the lack of RMs. Philippe et al 138 proposed colloidal extraction for the separation of anthropogenic TiO 2 NPs from naturally occurring particles, of which only a small fraction was colloidal in size. Background correction with Nb as a proxy for natural TiO 2 gave an ICP-MS LOD of ca.…”