Details

Autor(en) / Beteiligte

• Leopold, Kerstin
• Philippe, Allan
• Wörle, Katharina
• Schaumann, Gabriele Ellen

Titel

Analytical strategies to the determination of metal-containing nanoparticles in environmental waters

Ist Teil von

• TrAC, Trends in analytical chemistry (Regular ed.), 2016-11, Vol.84, p.107-120

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2016

Link zum Volltext

Quelle

Access via ScienceDirect (Elsevier)

Beschreibungen/Notizen

• •Offline separation techniques provide high preconcentration factors and recoveries.•Distinction between metal ions and MNPs is difficult; here ETAAS seems promising.•SP-ICP-MS coupled with size fractionation provides information on shape & structure.•Validation and production of RMs have to be further developed.•Standards on measurement quality require definition by the scientific community. [Display omitted] Metal-containing nanoparticles (MNPs) represent emerging pollutants that still pose analytical challenges for their determination in environmentally relevant samples, including extremely low MNPs' concentrations, high colloidal background and the need to perform speciation analysis. Complementary to traditional state-of-the-art techniques evaluated elsewhere, this review additionally evaluates less conventional approaches for sample pretreatment, preconcentration, on- and offline detection, size characterisation and quantification of MNPs in environmental samples. Preconcentration techniques, like cloud point extraction and solid phase extraction, provide high preconcentration factors and recoveries. Electrothermal atomic absorption spectrometry opens interesting perspectives in the still unresolved distinction between dissolved ions and nanoparticles. Combination of single particle ICP-MS with size fractionation techniques, like hydrodynamic chromatography or electrospray-differential mobility analysis, is highly promising for assessment of shape and structure-related information of MNPs and their aggregates. Although highly relevant, the validation and production of reference materials and quantitative criteria on measurement certainty still require further development.