Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Volker Siemens"'
Autor:
Annia Greif, Andrea van der Veen, José A. C. Broekaert, Volker Siemens, Werner Klemm, Anja Duffek, Martin Schultze, Frank W. Junge
Publikováno v:
Acta hydrochimica et hydrobiologica. 33:475-491
Analyses of water, suspended particulate matter, and sediment for the area drained by the river Mulde (Germany) for the early 90's show a high level of pollution in several sections of the river system. This was caused primarily by mining, and indust
Autor:
Volker Siemens, José A. C. Broekaert
Publikováno v:
Spectrochimica Acta Part B: Atomic Spectroscopy. 59:1823-1839
The state-of-the-art and trends of development in atomic spectrometry with microwave-induced plasmas (MIPs) since the 1998s are presented and discussed. This includes developments in devices for producing microwave plasma discharges, with reference a
Autor:
Volker Siemens, José A. C. Broekaert
Publikováno v:
Analytical and Bioanalytical Chemistry. 380:185-189
The development of microplasmas for spectrochemical analysis by optical methods is discussed. Recent achievements in miniaturization are highlighted, especially for three types of plasmas, namely high-frequency plasmas, dc-discharges and microwave pl
Autor:
Ralf Ebinghaus, Dan Strömberg, Åke Iverfeldt, Jonas Sommar, Volker Siemens, Eric M. Prestbo, Oliver Lindqvist, John Munthe, Ingvar Wängberg, Gerhard Petersen, Kari Larjava, Katarina Gårdfeldt
Publikováno v:
Atmospheric Environment. 37:9-20
The mercury species over Europe (MOE) project was aimed at identifying sources, occurrence and atmospheric behaviour of atmospheric Hg species. Within MOE, emission measurements, ambient air measurements, process and regional-scale modelling and labo
Publikováno v:
Siemens, V, Harju, T, Laitinen, T, Larjava, K & Broekaert, J 1995, ' Applicability of microwave induced plasma optical emission spectrometry (MIP-OES) for continous monitoring of mercury in flue gases ', Fresenius' Journal of Analytical Chemistry, vol. 351, no. 1, pp. 11-18 . https://doi.org/10.1007/BF00324286
The applicability of microwave-induced plasma optical emission spectrometry (MIP-OES) for continuous monitoring of the environmentally hazardous element mercury in flue gases has been studied. Microwave induced plasmas have been sustained using both
Autor:
Timo Laitinen, S. Artmann, Volker Siemens, D. Klockow, Tuula Vahlman, Kari Larjava, José A. C. Broekaert
Publikováno v:
Larjava, K, Laitinen, T, Vahlman, T, Artmann, S, Siemens, V, Broekaert, J & Klockow, D 1992, ' Measurement and Control of Mercury Species in Flue Gases from Liquid Waste Incineration ', International Journal of Environmental Analytical Chemistry, vol. 49, no. 1-2, pp. 73-85 . https://doi.org/10.1080/03067319208028128
New measurement methods have been developed for speciation of mercury and its compounds under flue gas conditions. Total mercury can be collected by a silver denuder or by a gold-coated diffusion screen. Mercury halides can be selectively preconcentr
Publikováno v:
IEEE Transactions on Plasma Science. 33:560-561
A stable microstrip microwave plasma (MSP) operated at atmospheric pressure with a power of some 10-20 W and at a gas flow of 0.2-0.8 L/min of argon in a resonant structure produced with the aid of microstructuring technology on a 5/spl times/5 cm/su
Publikováno v:
Larjava, K, Laitinen, T, Kiviranta, T, Siemens, V & Klockow, D 1993, ' Application of the diffusion screen technique to the determination of gaseous mercury and mercury (II) chloride in flue gases ', International Journal of Environmental Analytical Chemistry, vol. 52, no. 1-4, pp. 65-73 . https://doi.org/10.1080/03067319308042849
A technique based on the use of a gold-coated diffusion screen for the collection of gaseous mercury species in flue gases is introduced. Using this technique, collection efficiencies for both metallic mercury and mercury(II)chloride are well above 9
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ec77e006601d8f956d54e02034a59740
https://cris.vtt.fi/en/publications/551b284e-c091-4242-9ac0-4e8c8b87d65e
https://cris.vtt.fi/en/publications/551b284e-c091-4242-9ac0-4e8c8b87d65e
Publikováno v:
Larjava, K, Kiviranta, T, Laitinen, T, Siemens, V & Vahlman, T 1993, Determination of heavy metal species at high temperatures. in M Hupa & J Matinlinna (eds), LIEKKI Combustion Research Program : Technical Review 1988-1992 . Åbo Akademi, Turku, pp. 495-508 .
VTT Technical Research Centre of Finland-PURE
VTT Technical Research Centre of Finland-PURE
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::29dcb24edf219f1cf67811b450beedbd
https://cris.vtt.fi/en/publications/723d4395-b21d-4876-b9ac-de74d905dac4
https://cris.vtt.fi/en/publications/723d4395-b21d-4876-b9ac-de74d905dac4
Publikováno v:
Larjava, K, Laitinen, T, Vahlman, T & Siemens, V 1991, Raskasmetallien käyttäytyminen korkeissa lämpötiloissa. Kadmiumin ja elohopean kemia . in Vuosikirja : Årsboken. 1991 : LIEKKI Polttotekniikan tutkimusohjelma . Åbo Akademi, Turku, Liekki: Polttotekniikan tutkimusohjelma, no. L91-1, pp. 305-318 .
VTT Technical Research Centre of Finland-PURE
VTT Technical Research Centre of Finland-PURE
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::a8770a9d4f8a7887ef22ec097e9f2b52
https://cris.vtt.fi/en/publications/1d541a07-1646-4ef4-afb6-d7093de28395
https://cris.vtt.fi/en/publications/1d541a07-1646-4ef4-afb6-d7093de28395