About: Investigation of in situ trapping of selenium and arsenic hydrides within a tungsten tube atomiser.

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About: Investigation of in situ trapping of selenium and arsenic hydrides within a tungsten tube atomiser. Goto Sponge NotDistinct Permalink

An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	The capability of in situ trapping of selenium and arsenic hydrides within a bare and modified (Pd, Pt, Ir and Re) tungsten tube atomiser (WETA) was investigated by electrothermal atomic absorption spectrometry and by a radiotracer technique using Se-75 radionuclide. Low efficiency of trapping (below 5%) was found within the bare tungsten tube. On the other hand, modification with 100 mug of Pt, Ir and Re, respectively, enhanced significantly the efficiency of trapping. Platinum-treated tubes were very efficient at collecting hydrides in the low temperature range of 100-200 degreesC, reaching efficiency close to 100%. Iridium- and rhenium-treated tubes were capable of trapping hydrides in the high temperature range of 700-900 degreesC, approaching an overall efficiency of 10%. Palladium modifier caused fatal deterioration of the tungsten tube. Low- and high-temperature mechanisms of trapping on the inner tube surface were seen, which were probably related to the low temperature dissociative chemisorpt The capability of in situ trapping of selenium and arsenic hydrides within a bare and modified (Pd, Pt, Ir and Re) tungsten tube atomiser (WETA) was investigated by electrothermal atomic absorption spectrometry and by a radiotracer technique using Se-75 radionuclide. Low efficiency of trapping (below 5%) was found within the bare tungsten tube. On the other hand, modification with 100 mug of Pt, Ir and Re, respectively, enhanced significantly the efficiency of trapping. Platinum-treated tubes were very efficient at collecting hydrides in the low temperature range of 100-200 degreesC, reaching efficiency close to 100%. Iridium- and rhenium-treated tubes were capable of trapping hydrides in the high temperature range of 700-900 degreesC, approaching an overall efficiency of 10%. Palladium modifier caused fatal deterioration of the tungsten tube. Low- and high-temperature mechanisms of trapping on the inner tube surface were seen, which were probably related to the low temperature dissociative chemisorpt (en)
Title	Investigation of in situ trapping of selenium and arsenic hydrides within a tungsten tube atomiser. Investigation of in situ trapping of selenium and arsenic hydrides within a tungsten tube atomiser. (en)
skos:prefLabel	Investigation of in situ trapping of selenium and arsenic hydrides within a tungsten tube atomiser. Investigation of in situ trapping of selenium and arsenic hydrides within a tungsten tube atomiser. (en)
skos:notation	RIV/68081715:_____/01:25010014!RIV/2003/AV0/A25003/N
http://linked.open.../vavai/riv/strany	831;837
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA203/98/0754), Z(AV0Z4031919)
http://linked.open...iv/cisloPeriodika	8
http://linked.open...vai/riv/dodaniDat	2003
http://linked.open...aciTvurceVysledku	Marek, Petr Dočekal, Bohumil
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav analytické chemie AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	683472
http://linked.open...ai/riv/idVysledku	RIV/68081715:_____/01:25010014
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	graphite furnace; absorption spectrometry; atomization (en)
http://linked.open.../riv/klicoveSlovo	atomization absorption spectrometry graphite furnace
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[89CF506D9F70]
http://linked.open...i/riv/nazevZdroje	Journal of Analytical Atomic Spectrometry
http://linked.open...in/vavai/riv/obor	CB
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...ocetUcastnikuAkce	0 (xsd:int)
http://linked.open...nichUcastnikuAkce	0 (xsd:int)
http://linked.open...vavai/riv/projekt	New approaches to volatile compound generation and atomization useful for applications of analytical atomic spectrometry for trace and ultratrace analysis
http://linked.open...UplatneniVysledku	2001
http://linked.open...v/svazekPeriodika	16
http://linked.open...iv/tvurceVysledku	Marek, Petr Dočekal, Bohumil
http://linked.open...n/vavai/riv/zamer	Vyvinutí nových metod analytické chemie pro potřeby společenské praxe
issn	0267-9477
number of pages	7 (xsd:int)

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