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Platform-to-platform sample transfer, distribution, dilution, and dosing via electrothermal vaporization and electrostatic deposition

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dc.contributor.author Hermann G.
dc.contributor.author Trenin A.
dc.contributor.author Matz R.
dc.contributor.author Gafurov M.
dc.contributor.author Gilmutdinov A.
dc.contributor.author Nagulin K.
dc.contributor.author Frech W.
dc.contributor.author Björn E.
dc.contributor.author Grinshtein I.
dc.contributor.author Vasilieva L.
dc.date.accessioned 2018-09-17T20:47:33Z
dc.date.available 2018-09-17T20:47:33Z
dc.date.issued 2004
dc.identifier.issn 0584-8547
dc.identifier.uri https://dspace.kpfu.ru/xmlui/handle/net/134061
dc.description.abstract A novel system for solid sample pretreatment, handling and dosing for analytical atomic spectrometry is described. A primary solid or liquid sample is vaporized in a graphite furnace and then condensed in a specially designed condensation zone. On the further transport path, the analyte aerosol can be diluted and distributed in pre-set ratios in the laboratory made flow control system. Applying a corona discharge, aerosol particulates are then quantitatively re-collected by means of intra-furnace electrostatic precipitation on the platform of another graphite furnace or by external precipitation on one or a set of platforms. This makes possible to produce a set of secondary platforms with equal analyte compositions from one individual primary sample. Such multitudes allow sequential multi-element determinations with single-element instrumentation or comparative measurements with different techniques. Furthermore, the described procedure allows external thermal sample pretreatment with preceding pyrolysis and additional vaporization, condensation, and re-precipitation that significantly reduces or removes the sample matrix. Owing to different losses, transport efficiencies of electrothermal vaporization (ETV) instrumentation depend on analyte element, matrix, vaporization temperature, ramp rate, and tube history. In order to reduce the losses and therewith such dependencies of the losses, new laboratory constructed ETV unit with analyte condensation in an axially focusing upstream convection zone has been constructed. Analytical performance of the new setup is compared with the performance of a commercial end-on flow-through ETV unit when analyzing both liquid dosed samples and certified solid reference materials. The new system shows much higher transport efficiencies that are, in addition, more uniform for elements of different volatility. The effects of chemical sample modifiers and elements supporting analyte condensation are studied. Most of the analytical measurements were carried out with a continuum source coherent forward scattering multi-element spectrometer. Comparative measurements were also carried out independently in the co-authors' laboratories with atomic absorption and inductively coupled plasma mass spectrometry techniques. © 2004 Elsevier B.V. All rights reserved.
dc.relation.ispartofseries Spectrochimica Acta - Part B Atomic Spectroscopy
dc.subject Electrostatic precipitation
dc.subject Electrothermal vaporization
dc.subject Simultaneous multi-element determinations
dc.subject Solid sampling
dc.subject Transport efficiencies
dc.title Platform-to-platform sample transfer, distribution, dilution, and dosing via electrothermal vaporization and electrostatic deposition
dc.type Article
dc.relation.ispartofseries-issue 5
dc.relation.ispartofseries-volume 59
dc.collection Публикации сотрудников КФУ
dc.relation.startpage 737
dc.source.id SCOPUS05848547-2004-59-5-SID2342642059


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  • Публикации сотрудников КФУ Scopus [24551]
    Коллекция содержит публикации сотрудников Казанского федерального (до 2010 года Казанского государственного) университета, проиндексированные в БД Scopus, начиная с 1970г.

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