Home > Search Results: 999C1a:GAP503/10/2002
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National Repository of Grey Literature 2 records found  Search took 0.01 seconds. 
Characterization of atmospheric particulate matter by diffusive gradient in thin film (DGT) technique
 Gregušová, Michaela ; Dočekal, Bohumil
In this study, characteristics of heavy metal contamination in road dust collected from urban area with heavy traffic in Brno, Czech Republic was investigated. The DGT probes were exposed in aqueous suspensions of particulate matter for different time periods to monitor responses of the sample matter. The road dust and DGT sorption gels were decomposed by microwave assisted extraction and analyzed by inductively coupled plasma mass spectrometry for estimation of trace metals contents. The results revealed that the traffic appears to be responsible for the high levels of Cu, Pb, Ni and Sb and also that DGT technique, as alternative to conventional extraction procedures is a useful tool for characterization of metals mobility.
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New modification of diffusive gradient in thin film technique (DGT) for determination of metals in sediments
 Gregušová, Michaela ; Dočekal, Bohumil
The diffusive gradient in thin film (DGT) technique has been used for measuring fluxes and concentrations of labile metal species in waters, soils and sediments. The DGT probes offer a number of advantages over other conventional monitoring techniques as grab sampling, by reducing the errors of sample storage and transportation. Spatially resolved DGT responses were indicative of local redistribution of uranium in naturally uranium poor and rich sediments.
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