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Article: Determination of lead in a chloride matrix by atomic absorption spectrometry using electrothermal vaporization and capacitively coupled plasma atomization

TitleDetermination of lead in a chloride matrix by atomic absorption spectrometry using electrothermal vaporization and capacitively coupled plasma atomization
Authors
KeywordsAtomic absorption
Capacitively coupled plasma
Graphite furnace
Lead
Sea-water
Sodium chloride matrix
Trace metal
Issue Date1998
PublisherRoyal Society of Chemistry. The Journal's web site is located at http://www.rsc.org/jaas
Citation
Journal Of Analytical Atomic Spectrometry, 1998, v. 13 n. 3, p. 209-214 How to Cite?
AbstractA simple and rapid method using graphite furnace vaporization and plasma atomization for the determination of lead in a sodium chloride matrix was developed. Samples were injected into the furnace of a commercial graphite furnace atomic absorption/plasma emission spectrometer. A relatively low vaporization temperature of 750°C was used to vaporize lead chloride preferentially from the bulk sodium chloride matrix. The lead chloride molecules were then atomized by a capacitively coupled plasma. The lead atomic absorption signal is, therefore, separated from the sodium chloride background absorption temporally. Detection limits (3σ) in 3% m/v sodium chloride are 4 and 40 pg of lead using peak absorbance and integrated absorbance, respectively, for a 20 μl sample. The direct determination of lead in sea-water, however, suffers from matrix effects due to magnesium sulfate. Addition of oxalic acid as a chemical modifier eliminates the magnesium sulfate interference. Detection limits (3σ) in a sea-water matrix are 28 and 2 pg of lead using peak absorbance and integrated absorbance, respectively. The precision of the method is ≤7% RSD (five replicates of 20 μl of a 25 ng ml-1 Pb sample in either a sodium chloride or sea-water matrix).
Persistent Identifierhttp://hdl.handle.net/10722/70523
ISSN
2015 Impact Factor: 3.379
2015 SCImago Journal Rankings: 1.022
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorChan, GCYen_HK
dc.contributor.authorChan, WTen_HK
dc.date.accessioned2010-09-06T06:23:40Z-
dc.date.available2010-09-06T06:23:40Z-
dc.date.issued1998en_HK
dc.identifier.citationJournal Of Analytical Atomic Spectrometry, 1998, v. 13 n. 3, p. 209-214en_HK
dc.identifier.issn0267-9477en_HK
dc.identifier.urihttp://hdl.handle.net/10722/70523-
dc.description.abstractA simple and rapid method using graphite furnace vaporization and plasma atomization for the determination of lead in a sodium chloride matrix was developed. Samples were injected into the furnace of a commercial graphite furnace atomic absorption/plasma emission spectrometer. A relatively low vaporization temperature of 750°C was used to vaporize lead chloride preferentially from the bulk sodium chloride matrix. The lead chloride molecules were then atomized by a capacitively coupled plasma. The lead atomic absorption signal is, therefore, separated from the sodium chloride background absorption temporally. Detection limits (3σ) in 3% m/v sodium chloride are 4 and 40 pg of lead using peak absorbance and integrated absorbance, respectively, for a 20 μl sample. The direct determination of lead in sea-water, however, suffers from matrix effects due to magnesium sulfate. Addition of oxalic acid as a chemical modifier eliminates the magnesium sulfate interference. Detection limits (3σ) in a sea-water matrix are 28 and 2 pg of lead using peak absorbance and integrated absorbance, respectively. The precision of the method is ≤7% RSD (five replicates of 20 μl of a 25 ng ml-1 Pb sample in either a sodium chloride or sea-water matrix).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.subjectAtomic absorptionen_HK
dc.subjectCapacitively coupled plasmaen_HK
dc.subjectGraphite furnaceen_HK
dc.subjectLeaden_HK
dc.subjectSea-wateren_HK
dc.subjectSodium chloride matrixen_HK
dc.subjectTrace metalen_HK
dc.titleDetermination of lead in a chloride matrix by atomic absorption spectrometry using electrothermal vaporization and capacitively coupled plasma atomizationen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0267-9477&volume=13&spage=209&epage=214&date=1998&atitle=Determination+of+lead+in+a+chloride+matrix+by+atomic+absorption+spectrometry+using+electrothermal+vaporization+and+capacitively+coupled+plasma+atomizationen_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/A706907C-
dc.identifier.scopuseid_2-s2.0-0032025968en_HK
dc.identifier.hkuros31689en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0032025968&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume13en_HK
dc.identifier.issue3en_HK
dc.identifier.spage209en_HK
dc.identifier.epage214en_HK
dc.identifier.isiWOS:000072658000009-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridChan, GCY=7202355292en_HK
dc.identifier.scopusauthoridChan, WT=7403918827en_HK

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