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Description
| - Byla vyvinuta nová metoda radiochemické neutronové aktivační analýzy (RNAA) pro stanovení nízkých koncentrací Si v biologických materiálech založená na využití reakce 30Si(n,?)31Si s tepelnými neutrony. Radiochemická separace spočívá v alkalicko-oxidativním tavení vzorků a destilaci SiF4 a poskytuje frakce s vysokou radiochemickou čistotou. Byly stanoveny obsahy Si na úrovni jednotek až stovek ?g/g v řadě biologických referenčních materiálů a porovnány s literárními hodnotami. (cs)
- A new radiochemical neutron activation analysis (RNAA) method has been developed for low-level determination of Si in biological materials, which is based on the Si-30(n,gamma)Si-31 nuclear reaction with thermal neutrons. The radiochemical separation consists of an alkaline-oxidative decomposition followed by distillation of SiF4. Nuclear interferences, namely that of the P-31(n,p)Si-31 with fast neutrons, have been examined and found negligible only when irradiation is carried out in an extremely well-thermalized neutron spectrum, such as available at the NIST reactor. The RNAA procedure yields excellent radiochemical purity of the separated fractions, which allows the measurement of the beta(-)-activity of the Si-31 by liquid scintillation counting.
- A new radiochemical neutron activation analysis (RNAA) method has been developed for low-level determination of Si in biological materials, which is based on the Si-30(n,gamma)Si-31 nuclear reaction with thermal neutrons. The radiochemical separation consists of an alkaline-oxidative decomposition followed by distillation of SiF4. Nuclear interferences, namely that of the P-31(n,p)Si-31 with fast neutrons, have been examined and found negligible only when irradiation is carried out in an extremely well-thermalized neutron spectrum, such as available at the NIST reactor. The RNAA procedure yields excellent radiochemical purity of the separated fractions, which allows the measurement of the beta(-)-activity of the Si-31 by liquid scintillation counting. (en)
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Title
| - Low-level determination of silicon in biological materials using radiochemical neutron activation analysis
- Stanovení nízkých koncentrací křemíku radiochemickou neutronovou aktivační analýzou (cs)
- Low-level determination of silicon in biological materials using radiochemical neutron activation analysis (en)
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skos:prefLabel
| - Low-level determination of silicon in biological materials using radiochemical neutron activation analysis
- Stanovení nízkých koncentrací křemíku radiochemickou neutronovou aktivační analýzou (cs)
- Low-level determination of silicon in biological materials using radiochemical neutron activation analysis (en)
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skos:notation
| - RIV/61389005:_____/05:00020906!RIV06-AV0-61389005
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http://linked.open.../vavai/riv/strany
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http://linked.open...avai/riv/aktivita
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http://linked.open...avai/riv/aktivity
| - P(GA202/03/0891), Z(AV0Z10480505)
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http://linked.open...iv/cisloPeriodika
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http://linked.open...vai/riv/dodaniDat
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http://linked.open...aciTvurceVysledku
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http://linked.open.../riv/druhVysledku
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http://linked.open...iv/duvernostUdaju
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http://linked.open...titaPredkladatele
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http://linked.open...dnocenehoVysledku
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http://linked.open...ai/riv/idVysledku
| - RIV/61389005:_____/05:00020906
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http://linked.open...riv/jazykVysledku
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http://linked.open.../riv/klicovaSlova
| - gel breast implants; alzhemers-disease; renal-failure (en)
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http://linked.open.../riv/klicoveSlovo
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http://linked.open...odStatuVydavatele
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http://linked.open...ontrolniKodProRIV
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http://linked.open...i/riv/nazevZdroje
| - Journal of Radioanalytical and Nuclear Chemistry
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http://linked.open...in/vavai/riv/obor
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http://linked.open...ichTvurcuVysledku
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http://linked.open...cetTvurcuVysledku
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http://linked.open...vavai/riv/projekt
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http://linked.open...UplatneniVysledku
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http://linked.open...v/svazekPeriodika
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http://linked.open...iv/tvurceVysledku
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http://linked.open...n/vavai/riv/zamer
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issn
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number of pages
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