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Distribution and speciation of platinum group elements in environmental matrices

Distribution and speciation of platinum group elements in environmental matrices,10.1016/S0165-9936(99)00173-9,Trends in Analytical Chemistry,R. R. Ba

Distribution and speciation of platinum group elements in environmental matrices   (Citations: 31)
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The use of platinum group elements (PGEs) as components of autocatalytic converters attached to motor vehicles has resulted in serious contamination of the environment by Pt, Rh and Pd in nanocrystalline forms. Trace concentrations of PGEs, particularly the major component Pt, in environmental samples have been measured by sensitive instrumental procedures. These data have raised further questions about the nature of Pt species in contaminated soils and in plants grown in them. The focus of attention is changing from accumulations of data expressing total concentrations to investigations of speciation. Application of analytical procedures for research on speciation has provided information concerning transformations of Pt compounds in contaminated soils, the uptake of Pt by plants and the nature of Pt compounds in vegetation. Determination of background levels of precious metals in clinical and environmental matrices has required the development of analytical methods which combine uses of minimal quantities of reagents, and as small a number of chemical operations as possible to yield very low procedural blanks. Sensitive instrumental methods based upon high resolution inductively coupled plasma mass spectrometry and adsorptive stripping voltammetry have proven to be valuable for this work.
Journal: Trends in Analytical Chemistry - TrAC , vol. 18, no. 11, pp. 702-707, 1999
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    • ...Adsorptive cathodic stripping voltammetry (AdCSV) was selected as the analytical method considering the very low detection limits, the low cost of the analysis (with the opportunity of portable devices) and the possibility to quantify Pt and Rh in a single analytical determination, a very important issue when dealing with Cultural Heritage as samples are often available in very small quantities (Helmers and Mergel 1998; Barefoot 1999; ...

    Laura Rampazziet al. Monuments as sampling surfaces of recent traffic pollution

    • ...In recent years Pt, Pd and Rh are being extensively used as components of automobile catalytic converters to control and limit pollutants, such as CO, NOx and unburnt hydrocarbons (HCs), in exhaust gases from motor vehicles, by transforming them into less harmful CO2 ,N 2 and H2O (Zereini et al. 1997; Helmers and Mergel 1998; Barefoot 1999; Palacios et al. 2000; Niemela et al. 2004; Rauch et al. 2005)...
    • ...The toxic effect of these new pollutants has become a cause of concern because PGE have been reported to bioaccumulate in the environment and also cause allergic reactions and various health problems to humans (Farago et al.1998; Barefoot 1999; Zereini and Alt 2000; Ravindra et al. 2004; Moldovan 2007).Therefore,...

    Ramavati Mathuret al. Anthropogenic platinum, palladium and rhodium concentrations in road d...

    • ...PGE content in soils decreases also with sampling depth (8, 56), which can prove a small migration of PGE in this environmental compartment (28)...

    Aleksandra Dubiella-Jackowskaet al. Environmental Fate of Traffic-Derived Platinum Group Metals

    • ...The release of these PGMs has been found to increase the levels of contamination in soils [9], plants [10] and road sediments [11] next to highways as well as in airborne particles [12]...

    Catalina Bosch Ojedaet al. On-line preconcentration of palladium(II) using a microcolumn packed w...

    • ...Platinum (Pt), palladium (Pd) and rhodium (Rh) are used as catalysts to convert toxic gases (carbon monoxide, hydrocarbons and oxides of nitrogen) into water, carbon dioxide and nitrogen (Barefoot, 1999)...

    Abdourahamane Tankari Dan-Badjoet al. Deposition of platinum group elements and polycyclic aromatic hydrocar...

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