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Article: A novel detection scheme of trace elements using ICP-MS

TitleA novel detection scheme of trace elements using ICP-MS
Authors
Issue Date2005
PublisherRoyal Society of Chemistry. The Journal's web site is located at http://www.rsc.org/jaas
Citation
Journal Of Analytical Atomic Spectrometry, 2005, v. 20 n. 11, p. 1197-1202 How to Cite?
AbstractA novel sample modulation method for inductively coupled plasma mass spectrometry (ICP-MS) is presented. Analyte ions (Ba, Cd and La) are spatially concentrated onto Fe(OH)3 particles of size of 102 nm. The particles in the original aliquot were introduced into ICP-MS for time-resolved measurement. The spatially concentrated analyte ion on each Fe(OH)3 particle produces a plume of gaseous analyte ions in the ICP. The plume is detected as a current spike in the mass spectrometer. Time-resolved measurement using the time-resolved analysis (TRA) mode of the ICP-MS and a digital oscilloscope showed ICP-MS current spikes corresponding to the preconcentrated analyte of original concentration of 1 pg mL-1 to 1 ng mL-1. The full width at half maximum (FWHM) of the current spikes of the adsorbed analyte is of the same order of magnitude as that of the Fe(OH)3 particles. Enhancement in signal-to-background ratio by the spatial preconcentration-sample modulation method enables the detection of ultra-trace metal (
Persistent Identifierhttp://hdl.handle.net/10722/70264
ISSN
2015 Impact Factor: 3.379
2015 SCImago Journal Rankings: 1.022
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorYau, MHPen_HK
dc.contributor.authorChan, WTen_HK
dc.date.accessioned2010-09-06T06:21:15Z-
dc.date.available2010-09-06T06:21:15Z-
dc.date.issued2005en_HK
dc.identifier.citationJournal Of Analytical Atomic Spectrometry, 2005, v. 20 n. 11, p. 1197-1202en_HK
dc.identifier.issn0267-9477en_HK
dc.identifier.urihttp://hdl.handle.net/10722/70264-
dc.description.abstractA novel sample modulation method for inductively coupled plasma mass spectrometry (ICP-MS) is presented. Analyte ions (Ba, Cd and La) are spatially concentrated onto Fe(OH)3 particles of size of 102 nm. The particles in the original aliquot were introduced into ICP-MS for time-resolved measurement. The spatially concentrated analyte ion on each Fe(OH)3 particle produces a plume of gaseous analyte ions in the ICP. The plume is detected as a current spike in the mass spectrometer. Time-resolved measurement using the time-resolved analysis (TRA) mode of the ICP-MS and a digital oscilloscope showed ICP-MS current spikes corresponding to the preconcentrated analyte of original concentration of 1 pg mL-1 to 1 ng mL-1. The full width at half maximum (FWHM) of the current spikes of the adsorbed analyte is of the same order of magnitude as that of the Fe(OH)3 particles. Enhancement in signal-to-background ratio by the spatial preconcentration-sample modulation method enables the detection of ultra-trace metal (<pg mL-1) using ICP-MS. The detection limit of Ba is 0.05 pg mL-1. Using ICP-MS TRA measurement, the log-log plot of the sum of spike intensity of Ba in a Ba-Fe(OH)3 mixture versus Ba concentration is linear from 1 to 100 pg mL-1. A novel method to generate the Fe(OH)3 particles by spraying Fe(NO3) 3 solution onto a basic receiving solution is also presented. © The Royal Society of Chemistry 2005.en_HK
dc.languageengen_HK
dc.publisherRoyal Society of Chemistry. The Journal's web site is located at http://www.rsc.org/jaasen_HK
dc.relation.ispartofJournal of Analytical Atomic Spectrometryen_HK
dc.titleA novel detection scheme of trace elements using ICP-MSen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0267-9477&volume=&spage=1197&epage=1202&date=2005&atitle=A+Novel+Detection+Scheme+of+Trace+Elements+Using+ICP-MSen_HK
dc.identifier.emailChan, WT:wtchan@hku.hken_HK
dc.identifier.authorityChan, WT=rp00668en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1039/b508650gen_HK
dc.identifier.scopuseid_2-s2.0-27744462975en_HK
dc.identifier.hkuros114101en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-27744462975&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume20en_HK
dc.identifier.issue11en_HK
dc.identifier.spage1197en_HK
dc.identifier.epage1202en_HK
dc.identifier.isiWOS:000232692400005-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridYau, MHP=36929384400en_HK
dc.identifier.scopusauthoridChan, WT=7403918827en_HK

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