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Article: A novel bottom-viewed inductively coupled plasma-atomic emission spectrometry

TitleA novel bottom-viewed inductively coupled plasma-atomic emission spectrometry
Authors
KeywordsAxial view
Inductively coupled plasma-atomic emission spectrometry
Matrix effects
Issue Date2004
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/sab
Citation
Spectrochimica Acta - Part B Atomic Spectroscopy, 2004, v. 59 n. 1, p. 41-58 How to Cite?
AbstractA novel optical configuration for inductively coupled plasma (ICP)-atomic emission spectrometry is presented. Plasma emission is measured axially via the bottom end of the ICP torch. Analytical performance, such as increase in signal-to-background ratio (SBR) over radially viewed ICP and linear dynamic range, is comparable to that of end-on axially viewed ICP reported in the literatures. Under typical ICP operating conditions (forward power=1.0-1.6 kW, central channel gas flow rate=0.8-1.4 l/min), SBR is generally five times or more that of radial-viewing mode (observation heights=3-20 mm) for atomic lines of elements of low to medium ionization potential (Na, K, Sr and Ba). The enhancement factor in SBR is two to four times for ionic lines (e.g. MgII) and atomic lines of elements of high ionization potential (Zn). The influence of ICP forward power and carrier gas flow rate on analyte emission intensity and SBR were also studied. Similar to radially viewed ICP, as forward power increases, the net emission intensity increases and SBR decreases. Using a constant flux of analyte aerosols, the net intensity decreases as the central channel gas flow rate increases. No trend of SBR vs. central channel gas flow rate, however, is found. The linear dynamic range starts and ends at analyte concentration 0.5-1 order of magnitude lower than the corresponding radial-viewing mode. As a result, the span of linear dynamic range is similar for all viewing modes. Matrix effects of K and Ca on atomic lines are different from those reported for end-on axially viewed ICPs, probably due to the difference in the plasma regions that were probed. The matrix effects on ionic lines, however, are similar in magnitude. © 2003 Elsevier B.V. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/69405
ISSN
2015 Impact Factor: 3.289
2015 SCImago Journal Rankings: 1.031
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorChan, GCYen_HK
dc.contributor.authorChan, WTen_HK
dc.date.accessioned2010-09-06T06:13:22Z-
dc.date.available2010-09-06T06:13:22Z-
dc.date.issued2004en_HK
dc.identifier.citationSpectrochimica Acta - Part B Atomic Spectroscopy, 2004, v. 59 n. 1, p. 41-58en_HK
dc.identifier.issn0584-8547en_HK
dc.identifier.urihttp://hdl.handle.net/10722/69405-
dc.description.abstractA novel optical configuration for inductively coupled plasma (ICP)-atomic emission spectrometry is presented. Plasma emission is measured axially via the bottom end of the ICP torch. Analytical performance, such as increase in signal-to-background ratio (SBR) over radially viewed ICP and linear dynamic range, is comparable to that of end-on axially viewed ICP reported in the literatures. Under typical ICP operating conditions (forward power=1.0-1.6 kW, central channel gas flow rate=0.8-1.4 l/min), SBR is generally five times or more that of radial-viewing mode (observation heights=3-20 mm) for atomic lines of elements of low to medium ionization potential (Na, K, Sr and Ba). The enhancement factor in SBR is two to four times for ionic lines (e.g. MgII) and atomic lines of elements of high ionization potential (Zn). The influence of ICP forward power and carrier gas flow rate on analyte emission intensity and SBR were also studied. Similar to radially viewed ICP, as forward power increases, the net emission intensity increases and SBR decreases. Using a constant flux of analyte aerosols, the net intensity decreases as the central channel gas flow rate increases. No trend of SBR vs. central channel gas flow rate, however, is found. The linear dynamic range starts and ends at analyte concentration 0.5-1 order of magnitude lower than the corresponding radial-viewing mode. As a result, the span of linear dynamic range is similar for all viewing modes. Matrix effects of K and Ca on atomic lines are different from those reported for end-on axially viewed ICPs, probably due to the difference in the plasma regions that were probed. The matrix effects on ionic lines, however, are similar in magnitude. © 2003 Elsevier B.V. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/saben_HK
dc.relation.ispartofSpectrochimica Acta - Part B Atomic Spectroscopyen_HK
dc.rightsSpectrochimica Acta Part B: Atomic Spectroscopy. Copyright © Elsevier BV.en_HK
dc.subjectAxial viewen_HK
dc.subjectInductively coupled plasma-atomic emission spectrometryen_HK
dc.subjectMatrix effectsen_HK
dc.titleA novel bottom-viewed inductively coupled plasma-atomic emission spectrometryen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0584-8547&volume=59&spage=41&epage=58&date=2004&atitle=A+novel+bottom-viewed+inductively+coupled+plasma-atomic+emission+spectrometry+en_HK
dc.identifier.emailChan, WT:wtchan@hku.hken_HK
dc.identifier.authorityChan, WT=rp00668en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.sab.2003.09.002en_HK
dc.identifier.scopuseid_2-s2.0-0442311839en_HK
dc.identifier.hkuros92599en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0442311839&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume59en_HK
dc.identifier.issue1en_HK
dc.identifier.spage41en_HK
dc.identifier.epage58en_HK
dc.identifier.isiWOS:000189081900002-
dc.publisher.placeNetherlandsen_HK
dc.identifier.scopusauthoridChan, GCY=7202355292en_HK
dc.identifier.scopusauthoridChan, WT=7403918827en_HK

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