Interference free ultra trace determination of Pt, Pd and Au in geological and environmental samples by inductively coupled plasma quadrupole mass spectrometry after a cloud point extraction

Quantification of Noble Metals in Biological and Environmental Samples

“…Recent application of ion-imprinted polymers using various chelate complexes for SPE of noble metals such as Pt [85] and Pd [86] from environmental samples can be mentioned. Hydrophobic noble metal complexes undergo separation by extraction under cloud point extraction systems, for example, extraction of Pt, Pd, and Au with N, N-dihexyl-N 0 -benzylthiourea-Triton X-114 from sea water and dust samples [87]. Reductive co-precipitation of noble metals with a suitable collector (Te, Se, As, Hg, and Cu) may provide uncertainty when examining complex environmental samples as a result of difficulties with complete separation of high amounts of common metals, which can partially pass into the precipitate, and possible loss of PGMs.…”

Long-Term Monitoring of Palladium and Platinum Contents in Road Dust of the City of Munich, Germany

“…Coupling of Electrothermal Atomization to Laser Absorption Fluorescence Spectrometry (ET LAFS) was performed for the determination of palladium in airborne particulate matter from Berlin, Germany (Tilch et al 2000). In the meantime other research groups also utilized N,N-Dialkyl-N'-benzoylthioureas for trace analysis of PGM (Meeravali and Jiang 2008;Philippeit and Angerer 2001;Alshanaa and Aygüna 2011;Limbeck et al 2004). …”

Development of sensitive determination method for platinum in geological materials by carbon slurry sampling graphite furnace atomic absorption spectrometry

“…For this reason a separation/ preconcentration stage is often applied to remove matrix interferences and preconcentrate the analyte to a level at which it can be reliably determined. Various preconcentration approaches, such as: ion exchange [4,6,9,10,13], precipitation and coprecipitation [4,13], extraction techniques [4,[13][14][15][16][17][18][19][20][21][22] and biosorption [13,23] have been described in the literature for platinum separation from environmental samples. However, one of the most useful preconcentration treatments is adsorption onto solid adsorbents.…”