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Article: Effects of sample probe insertion on plasma conditions in direct sample insertion-inductively coupled plasma-atomic emission spectrometry

TitleEffects of sample probe insertion on plasma conditions in direct sample insertion-inductively coupled plasma-atomic emission spectrometry
Authors
KeywordsDirect sample insertion
Inductively coupled plasma
Laser ablation
Plasma diagnostics
Sample introduction
Thermal loading
Issue Date2001
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/sab
Citation
Spectrochimica Acta - Part B Atomic Spectroscopy, 2001, v. 56 n. 1, p. 13-25 How to Cite?
AbstractThe effects of sample probe insertion on plasma excitation conditions in direct sample insertion-inductively coupled plasma-atomic emission spectrometry (DSI-ICP-AES) were investigated. Graphite sample probes in the form of a cup and a rod (with or without undercut) were used. Molybdenum rods were also used for comparison. A dark central channel is created in the plasma when a sample probe is inserted. The diameter of the central channel correlates with the diameter of the sample probe. In addition, the plasma excitation conditions were monitored using repetitive laser sampling to introduce a steady flow of Zn or Fe particles into the ICP. Changes in the relative excitation temperature and electron number density of the plasma were deduced from the ratios of the emission intensities of Fe line pair and Zn line pair, respectively. The temperature and electron number density of the plasma decreased when a sample probe was inserted. The degree of changes in the plasma conditions depends on the diameter of the sample probes, regardless of the form and material of the probe. The diameter of the sample probe instead of its mass plays a significant role in perturbing the plasma excitation conditions. © 2001 Elsevier Science B.V.
Persistent Identifierhttp://hdl.handle.net/10722/68808
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.authorFan, MNen_HK
dc.contributor.authorChan, WTen_HK
dc.date.accessioned2010-09-06T06:07:55Z-
dc.date.available2010-09-06T06:07:55Z-
dc.date.issued2001en_HK
dc.identifier.citationSpectrochimica Acta - Part B Atomic Spectroscopy, 2001, v. 56 n. 1, p. 13-25en_HK
dc.identifier.issn0584-8547en_HK
dc.identifier.urihttp://hdl.handle.net/10722/68808-
dc.description.abstractThe effects of sample probe insertion on plasma excitation conditions in direct sample insertion-inductively coupled plasma-atomic emission spectrometry (DSI-ICP-AES) were investigated. Graphite sample probes in the form of a cup and a rod (with or without undercut) were used. Molybdenum rods were also used for comparison. A dark central channel is created in the plasma when a sample probe is inserted. The diameter of the central channel correlates with the diameter of the sample probe. In addition, the plasma excitation conditions were monitored using repetitive laser sampling to introduce a steady flow of Zn or Fe particles into the ICP. Changes in the relative excitation temperature and electron number density of the plasma were deduced from the ratios of the emission intensities of Fe line pair and Zn line pair, respectively. The temperature and electron number density of the plasma decreased when a sample probe was inserted. The degree of changes in the plasma conditions depends on the diameter of the sample probes, regardless of the form and material of the probe. The diameter of the sample probe instead of its mass plays a significant role in perturbing the plasma excitation conditions. © 2001 Elsevier Science B.V.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.subjectDirect sample insertionen_HK
dc.subjectInductively coupled plasmaen_HK
dc.subjectLaser ablationen_HK
dc.subjectPlasma diagnosticsen_HK
dc.subjectSample introductionen_HK
dc.subjectThermal loadingen_HK
dc.titleEffects of sample probe insertion on plasma conditions in direct sample insertion-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=56&spage=13&epage=25&date=2001&atitle=Effects+of+sample+probe+insertion+on+plasma+conditions+in+direct+sample+insertion-inductively+coupled+plasma-atomic+emission+spectrometryen_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/S0584-8547(00)00284-6en_HK
dc.identifier.scopuseid_2-s2.0-0035862080en_HK
dc.identifier.hkuros58803en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0035862080&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume56en_HK
dc.identifier.issue1en_HK
dc.identifier.spage13en_HK
dc.identifier.epage25en_HK
dc.identifier.isiWOS:000166887800002-
dc.publisher.placeNetherlandsen_HK
dc.identifier.scopusauthoridChan, GCY=7202355292en_HK
dc.identifier.scopusauthoridFan, MN=7201970980en_HK
dc.identifier.scopusauthoridChan, WT=7403918827en_HK

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