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Supercritical carbon dioxide as a carrier for sample introduction in atomic absorption spectrometry

✍ Scribed by S.R. Bysouth; J.F. Tyson

Publisher
Elsevier Science
Year
1992
Tongue
English
Weight
519 KB
Volume
258
Category
Article
ISSN
0003-2670

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✦ Synopsis

The use of a supercntlcal carbon dloxlde tamer to transport orgamc solutions of metal complexes to a heated restnctor IS demonstrated as a means of aerosol or vapour generatlon for sample mtroduction m flame atonuc absorption spectrometly Cahbratlons obtamed usmg conventional pneumatic nebuhsatlon of contmuously asplrated solutions or usmg flow lnJectton into a water tamer are compared with those obtained usmg the carbon dloxlde tamer InJectIon of solutions of copper pyrrohdmedlthiocarbamate 111 4-methyl pentan-Zone mto a carbon &oxlde tamer at 1000 p s I was shown to be 12 tunes more sensttwe than mjectron of the same solutions mto a water tamer with conventtonal nebuhsatlon The sensltlvlty of umtmuous nebuhsation of the solutions, however, was not achieved Dlssolutlon of sohd copper acetyl acetonate m supercntxal carbon dlomde IS demonstrated and subsequent vaponsatton followed by atormsatlon m a heated quartz furnace IS shown to occur &vwordF Atomic absorption spectrometly, Carbon dloxlde, Camers, Sample mtroductlon, Supercrltlcal carbon

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