Chemical vapor generation of Cu: optimization of generation media

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TypeArticle
Journal titleAnnali di Chimica
ISSN0003-4592
Volume95
IssueJuly/August
Pages491499; # of pages: 9
AbstractAcetic acid was used to enhance the efficiency of chemical vapor generation (CVG) of copper. The volatile product was formed at room temperature following merging of the sample solution with a flowing stream of 0.1% NaBH4; ICP-OES was used for detection. A precision of 1.6% RSD (n=11, 0.2 mg/L) was realized at sampling frequencies of about 90/h. A detection limit of 0.4 ng/mL (3sigma) was obtained. Sensitivity was enhanced approximately 8-fold over conventional pneumatic nebulization sample introduction. Compared with CVG in an optimized HCl or HNO3 medium, sensitivity was increased by an order of magnitude using acetic acid and the reductant concentration was reduced to only 10% of that required with HCl or HNO3. The generation efficiency was estimated to be 18% or 70%, depending on the method used to evaluate it. The methodology was successfully used to the determine copper in human hair and low alloy steel certified reference materials.
Publication date
LanguageEnglish
AffiliationNRC Institute for National Measurement Standards; National Research Council Canada
Peer reviewedNo
Identifier10178831
NRC number2607
NPARC number5764918
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Record identifierec8e1864-0dc8-4a72-b005-260ae824a650
Record created2009-03-29
Record modified2016-05-09
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