Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Erkki Häsänen"'
Autor:
Leena Aunela-Tapola, Jukka Leskelä, Juri Loosaar, Tuomo Salmikangas, Arvo Mehtonen, Vesa Kinnunen, Erkki Häsänen, Kari Larjava
Publikováno v:
Häsänen, E, Aunela-Tapola, L, Kinnunen, V, Larjava, K, Mehtonen, A, Salmikangas, T, Leskelä, J & Loosaar, J 1997, ' Emission factors and annual emissions of bulk and trace elements from oil shale fueled power plants ', Science of the Total Environment, vol. 198, no. 1, pp. 1-12 . https://doi.org/10.1016/S0048-9697(97)05432-6
Measurements were carried out to investigate the emission factors and annual emissions of bulk and trace elements from two large oil shale fueled power plants in northeastern Estonia. The samples from fuel and different ash fractions were collected a
Autor:
Erkki Häsänen, Leena Welling, Tiina Rantio, Jaakko Paasivirta, Keijo Mäntykoski, Jaana Koistinen, Pentti K.G. Manninen, Jukka Särkkä
Publikováno v:
Chemosphere. 26:2147-2160
Chloride, total and extractable organically bound chlorine, chlorohydrocarbons, polychlorodibenzo-p-dioxins (PCDD) and polychlorodibenzofurans (PCDF) were measured in dated bottom sediment layers of two sites of the northern Lake Ladoga near pulp mil
Autor:
Erkki Häsänen, Pentti K.G. Manninen
Publikováno v:
Manninen, P & Häsänen, E 1993, ' Use of neutron activation analysis in determination of total organic chlorine and bromine ', Journal of Radioanalytical and Nuclear Chemistry, vol. 167, no. 2, pp. 353-360 . https://doi.org/10.1007/BF02037193
Neutron activation analysis is practically the only high-sensitivy element-selective detection method for chlorine, bromine and iodine. This method is just ideal for organic halogen determination after separation of organically bound species from ino
Autor:
Erkki Häsänen, Bruno Bärs
Publikováno v:
Bärs, B & Häsänen, E 1992, ' Experimental estimation of neutron fluxes from niobium impurities in the pressure vessel steel of nuclear power reactors ', Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 317, no. 3, pp. 577-580 . https://doi.org/10.1016/0168-9002(92)91004-S
Nb impurities in samples from radioactive pressure vessel material have been chemically separated and purified twice by liquid ion exchange chromatography. The 93mNb activity from the fast neutron induced reaction 93Nb(n, n′)93mNb was measured by l
Autor:
Pentti K.G. Manninen, Erkki Häsänen
Publikováno v:
Manninen, P & Häsänen, E 1991, ' Multivariate data analysis of some Finnish water courses ', Fresenius' Journal of Analytical Chemistry, vol. 339, no. 9, pp. 620-623 . https://doi.org/10.1007/BF00325548
The following parameters were analyzed 2 to 4 times a year from 37 sampling sites; T, O2, O2%, Turbidity, Suspended solids, Conductivity, Alkalinity, pH, Color, CODMn, Total nitrogen, Total phosphorus, Cl, Fe, Mn, Total sulphur, K, Na, Ca, Mg, SiO2,
Autor:
Maija Lipponen, Kari Markkanen, Pentti Minkkinen, Petr Brjukhanov, Erkki Häsänen, Reijo Kattainen
Publikováno v:
Häsänen, E, Lipponen, M, Minkkinen, P, Kattainen, R, Markkanen, K & Brjukhanov, P 1990, ' Elemental concentrations of aerosol samples from the Baltic Sea area ', Chemosphere, vol. 21, no. 3, pp. 339-347 . https://doi.org/10.1016/0045-6535(90)90004-D
Fifteen 48-hour and two 24-hour aerosol samples were collected in the summer of 1985 during a Baltic Sea cruise on the Soviet marine research vessel Akademik Shuleykin. The expedition was part of the Soviet-Finnish programme for scientific and techni
Publikováno v:
The Science of the total environment. 262(1-2)
The effect of the emissions from large oil shale fuelled power plants and a cement factory in Estonia on the elemental concentration of atmospheric aerosols, deposition, elemental composition of mosses and ecological effects on mosses, lichens and pi
Publikováno v:
Aunela-Tapola, L, Frandsen, F & Häsänen, E 1998, ' Trace metal emissions from the Estonian oil shale fired power plant ', Fuel Processing Technology, vol. 57, no. 1, pp. 1-24 . https://doi.org/10.1016/S0378-3820(98)00069-1
Emission levels of selected trace metals from the Estonian oil shale fired power plant were studied. The plant is the largest single power plant in Estonia with an electricity production capacity of 1170 MWe (1995). Trace metals were sampled from the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5849e3242ae72ce6d343ac4fa3735886
https://cris.vtt.fi/en/publications/686ea4b8-8ca1-41b4-9176-1aa87ddf64ae
https://cris.vtt.fi/en/publications/686ea4b8-8ca1-41b4-9176-1aa87ddf64ae
Autor:
Pentti K.G. Manninen, Erkki Häsänen
Publikováno v:
The Dynamics and Use of Lacustrine Ecosystems ISBN: 9789401052184
Methods were developed for analyzing total organochlorine (TOC1) and total organobromine (TOBr) in different kinds of water, sediment and biological samples. Sediment samples were extracted with alkaline propanone and biological samples with a neutra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7e4ce414b4b2798c1dcad7c572d676c3
https://doi.org/10.1007/978-94-011-2745-5_50
https://doi.org/10.1007/978-94-011-2745-5_50
Publikováno v:
Häsänen, E, Manninen, P, Himberg, K & Väätäinen, V 1990, ' Chlorine and bromine contents in tobacco and tobacco smokes ', Journal of Radioanalytical and Nuclear Chemistry, vol. 144, no. 5, pp. 367-374 . https://doi.org/10.1007/BF02218144
The chlorine and bromine contents in tobacco and tobacco smoke in both the particulate and gaseous phases were studied by neutronactivation analysis. Methyl chloride and methyl bromide concentrations were measured in the gaseous phase by gas-liquid c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ad54d2c5656385849988b91c0f00313e
https://cris.vtt.fi/en/publications/7805e269-1eea-4161-a901-cf505aee15a3
https://cris.vtt.fi/en/publications/7805e269-1eea-4161-a901-cf505aee15a3