Home > Search Results: 999C1a:GA205/04/0060
Search:
Search Tips :: Advanced Search
Search collections:
Sort by: Display results: Output format:
National Repository of Grey Literature 3 records found  Search took 0.01 seconds. 
Distribution of the rare earth elements in the small catchment Lesní potok
 Špičková, Jitka ; Navrátil, Tomáš ; Skřivan, Petr ; Rohovec, Jan ; Mihajlevič, M.
Lanthanides (REE) are particularly useful as tracers of natural processes such as crust and mantle processes, weathering, sedimentary processes, geochemical processes in surface and groundwaters and transport of particulate material through the atmosphere. The aim of this study was to contribute to explanation of the REE cycling by evaluating their concentration in particular components of the ecosystem and by comparing their distributions between these components.
Detailed record
Comparison of chemical composition of throughfall and deposited precipitation
 Chaloupecký, Pavel ; Špičková, Jitka ; Fišák, Jaroslav ; Skřivan, Petr
Since June 2004 throughfall samples in beech and spruce vegetation have been taken at the observatory Milesovka. Ever since 1998 fog water samples have been taken there as well. In this paper are compared the concentrations of main ions and trace elements in throughfall and in deposited precipitation. The concentrations of main ions and trace elements in throughfal are primarily affected by the volume of samples. The highest concentrations of monitored sustances in throughfall were recorded in September and in October when the lowest rainfall totals were measured. The concentrations of monitored sustances were in throughfall mostly higher in spruce vegetation in comparison with beech vegetation. It is probably due to the thicker treetop in spruce vegetation on Milesovka observatory. Due to the thicker treetop a smaller volume of throughfall is let fall and the substances from ambient air are captured more effectively in comparison with beech vegetation. In the case of main ions the lowest concentrations were measured in fog water samples. For trace elements wasn´t data. From comparison with reference locality Lesni potok is obvious that concentrations of monitored sustances in throughfall on Milesovka exceed sharply concentrations in locality Lesni potok. This difference is considerably higher by spruce vegetation in comparison to beech vegetation which indicate that it is necessary take not only local air quality into account but also type of vegetation and thick of treetop which can very significantly contribute to the chemical composition of throughfall.
Detailed record
Koncentrace polutantů v mlžné vodě v závislosti na proudění vzduchu v hladině 850 hPa
 Fišák, Jaroslav ; Řezáčová, Daniela ; Fottová, D. ; Potužníková, Kateřina
The negative impact of pollutant concentration in fog water on the environment and consequently on the health of population was proved by numerous studies. Recently, the investigation has been focused on the pollutant concentration in fog water from several points of view. In this paper we briefly summarizethe results of clustering the fog water samples according to the enrichment factor and establishing the link of clusters and the air flow at 850 hPa level
Detailed record

Interested in being notified about new results for this query?
Subscribe to the RSS feed.
Digital Repository :: Search :: Submit :: Personalize :: Help
Powered by Invenio v1.1.2
Maintained by admin.invenio@techlib.cz
This site is also available in the following languages:
Česky  English