Zobrazeno 1 - 10
of 54
pro vyhledávání: '"Uuve Kirso"'
Publikováno v:
Science of The Total Environment. 481:605-610
The leaching behavior of selected polycyclic aromatic hydrocarbons (PAHs) from an oil shale processing waste deposit was monitored during 2005-2009. Samples were collected from the deposit using a special device for leachate sampling at field conditi
Publikováno v:
Fuel. 87:1998-2003
The influence of the alkaline medium on the hydrothermal activation of the oil shale fly ash with NaOH and KOH was studied using SEM/EDX, XRD, 29 Si and 27 Al high-resolution MAS-NMR spectra. In the presence of NaOH the silicon in the original fly as
Publikováno v:
Fuel. 86:669-676
The hydrothermal alkaline activation of the oil shale fly ash was studied using SEM/EDX, XRD and 29 Si and 27 Al high-resolution MAS-NMR spectra. The silicon in the original fly ashes was completely converted into calcium-alumino-silicate hydrates, m
Autor:
Erik Teinemaa, Margit Laja, Istvan Gebefügi, Gary Urb, Janek Reinik, Uuve Kirso, Antonius Kettrup
Publikováno v:
Polycyclic Aromatic Compounds. 26:111-119
The levels of polycyclic aromatic hydrocarbons (PAHs) in airborne particulate matter (PM) of urban aerosols were studied in Estonia. Samples of PM, particularly of the fine fractions (P 10 and PM 2.5 ), were taken from different locations in the capi
Publikováno v:
Atmospheric Environment. 36:813-824
There are huge world deposits of oil shale, however, little is known about the fate of atmospheric oil-shale combustion fly ash. In the present work, oil-shale combustion fly-ash aerosol was investigated under simulated daytime and nighttime conditio
Publikováno v:
Polycyclic Aromatic Compounds. 22:715-728
This study was designed to assess the contamination of a very special lake, Lake Baikal in Siberia, and two big lakes, Ladoga and Onega in the European part of Russia, by polycyclic aromatic hydrocarbons (PAHs). PAH compounds were analyzed by HPLC an
Publikováno v:
Aquatic Ecosystem Health & Management. 4:151-163
Polycyclic aromatic compounds continue to be regarded as a major environmental threat, especially in the aquatic environment. To gather further information on the distribution and levels of these persistent organic compound in natural waters, the cur
Autor:
Christian Grøn, Katrin Kollist-Siigur, Christian Helweg, Ole Jørgensen, Uuve Kirso, Kristoffer E. N. Jonassen, Torben Nielsen, Poul Erik Hansen
Publikováno v:
Journal of Environmental Quality. 30:526-537
Two different humic acids (HA) and a fulvic acid (FA) were chemically immobilized to a high performance liquid chromatography (HPLC) silica column material. The immobilization was performed by binding amino groups in HA/FA to the free aldehyde group
Autor:
Eiliv Steinnes, Priit Alumaa, Uuve Kirso, Jörgen Slet, Erik Teinemaa, Valter Petersell, Natalya Irha
Publikováno v:
Polycyclic Aromatic Compounds. 20:55-66
Two typical Estonian soils, Brown pseudopodzolic and Rendzina, were used for sorption studies with pyrene. The soil samples were subjected to a variety of chemical and physical tests. The specific surface area reached 3.05 m2 g−1 for Rendzina, and
Autor:
Uuve Kirso, Natalya Irha
Publikováno v:
Polycyclic Aromatic Compounds. 14:161-168
The investigation focused on particulate matrices of fly ash, two commercial adsorbents (silica and alumina), and their relative effects on the uptake and leaching of Pyrene (Pyr), an organic compound of environmental significance. Oil-shale fly ash