File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Novel setup for investigation of the plasma conditions in direct sample insertion inductively coupled plasma atomic emission spectrometry (DSI-ICP-AES)

TitleNovel setup for investigation of the plasma conditions in direct sample insertion inductively coupled plasma atomic emission spectrometry (DSI-ICP-AES)
Authors
Issue Date2004
PublisherRoyal Society of Chemistry. The Journal's web site is located at http://www.rsc.org/jaas
Citation
Journal of Analytical Atomic Spectrometry, 2004, v. 19 n. 9, p. 1111-1118 How to Cite?
AbstractInsertion of a sample probe into the inductively coupled plasma (ICP) for direct sample insertion (DSI) could change the plasma excitation conditions. In this study, a novel setup is proposed for the investigation of the probe effects. A hollow graphite tube was used as a stand-in for the DSI sample probe to exert probe effects on the plasma. Laser-ablated testing elements (Fe, Zn and Mg) were introduced separately into the central channel of the plasma via the hollow graphite tube for measurement of plasma excitation temperature and electron number density. A relatively low Ar carrier gas flow rate (0.42 L min-1) was used to minimize perturbation to the plasma due to the gas flow. The study shows that the extent of reduction in plasma excitation temperature and electron number density increases with probe insertion position at all observation heights. In addition, the probe effects strongly depend on the relative distance of the observation position to the tip of the probe. The probe effects are the strongest near the tip of the probe and reduce at observation positions further away from the tip. Signal-to-background ratios (SBR) of the testing elements also depend strongly on the probe insertion position and the relative distance of the observation position to the tip of the probe. The SBR peaks at 5-10 mm above the tip of the sample probe. The vertical profile of SBR depends on analyte diffusion in the plasma and the plasma excitation conditions.
Persistent Identifierhttp://hdl.handle.net/10722/168847
ISSN
2015 Impact Factor: 3.379
2015 SCImago Journal Rankings: 1.022
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorCheung, AWKen_US
dc.contributor.authorChan, WTen_US
dc.date.accessioned2012-10-08T03:35:00Z-
dc.date.available2012-10-08T03:35:00Z-
dc.date.issued2004en_US
dc.identifier.citationJournal of Analytical Atomic Spectrometry, 2004, v. 19 n. 9, p. 1111-1118en_US
dc.identifier.issn0267-9477en_US
dc.identifier.urihttp://hdl.handle.net/10722/168847-
dc.description.abstractInsertion of a sample probe into the inductively coupled plasma (ICP) for direct sample insertion (DSI) could change the plasma excitation conditions. In this study, a novel setup is proposed for the investigation of the probe effects. A hollow graphite tube was used as a stand-in for the DSI sample probe to exert probe effects on the plasma. Laser-ablated testing elements (Fe, Zn and Mg) were introduced separately into the central channel of the plasma via the hollow graphite tube for measurement of plasma excitation temperature and electron number density. A relatively low Ar carrier gas flow rate (0.42 L min-1) was used to minimize perturbation to the plasma due to the gas flow. The study shows that the extent of reduction in plasma excitation temperature and electron number density increases with probe insertion position at all observation heights. In addition, the probe effects strongly depend on the relative distance of the observation position to the tip of the probe. The probe effects are the strongest near the tip of the probe and reduce at observation positions further away from the tip. Signal-to-background ratios (SBR) of the testing elements also depend strongly on the probe insertion position and the relative distance of the observation position to the tip of the probe. The SBR peaks at 5-10 mm above the tip of the sample probe. The vertical profile of SBR depends on analyte diffusion in the plasma and the plasma excitation conditions.en_US
dc.languageengen_US
dc.publisherRoyal Society of Chemistry. The Journal's web site is located at http://www.rsc.org/jaasen_US
dc.relation.ispartofJournal of Analytical Atomic Spectrometryen_US
dc.titleNovel setup for investigation of the plasma conditions in direct sample insertion inductively coupled plasma atomic emission spectrometry (DSI-ICP-AES)en_US
dc.typeArticleen_US
dc.identifier.emailChan, WT:wtchan@hku.hken_US
dc.identifier.authorityChan, WT=rp00668en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1039/b400944den_US
dc.identifier.scopuseid_2-s2.0-6344260281en_US
dc.identifier.hkuros101482-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-6344260281&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume19en_US
dc.identifier.issue9en_US
dc.identifier.spage1111en_US
dc.identifier.epage1118en_US
dc.identifier.isiWOS:000223738000006-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridCheung, AWK=9045089200en_US
dc.identifier.scopusauthoridChan, WT=7403918827en_US

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats