UV photochemical generation of volatile cadmium species

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DOIResolve DOI: http://doi.org/10.1039/c1ja10252d
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TypeArticle
Journal titleJournal of Analytical Atomic Spectrometry
ISSN0267-9477
Volume26
Issue12
Pages25192523; # of pages: 5
SubjectAnalytes; Argon gas; Atomization process; Limit of detection; Low pressures; Metal hydrides; Photochemical generation; Quartz tube atomizers; UV sources; Volatile cadmium; Acetic acid; Atomization; Cadmium; Hydrides; Hydrogen; Quartz; Argon
AbstractPhotochemical generation of a volatile molecular Cd species from an acetic acid medium was accomplished using a thin film generator comprising a 20 W low pressure UV source. Argon gas was used to sweep the product vapor to a quartz tube atomizer heated to 900 °C. No signal was generated below about 770 °C and optimum atomization conditions required addition of 10% hydrogen to the Ar transfer gas, indicative of a thermochemical atomization process similar to that undergone for metal hydrides. UV generation efficiency exceeded 90% but the transfer of the analyte to the detector was problematic and precision of measurement was near 30% RSD. Despite such conditions, an estimated limit of detection was 2 μg l -1. © 2011 The Royal Society of Chemistry.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); NRC Institute for National Measurement Standards
Peer reviewedYes
NPARC number21271594
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Record identifieradd16348-c6ea-405f-b970-3f4325d1be2c
Record created2014-03-24
Record modified2016-05-09
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