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Direct ultratrace determination of cadmium in Antarctic and Greenland snow and ice by laser atomic fluorescence spectrometry

✍ Scribed by Michael A. Bolshov; Claude F. Boutron; François M. Ducroz; Ursula Görlach; Oleg N. Kompanetz; Sergei N. Rudniev; Bruno Hutch

Publisher
Elsevier Science
Year
1991
Tongue
English
Weight
650 KB
Volume
251
Category
Article
ISSN
0003-2670

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✦ Synopsis

Results of the first direct measurements

of Cd in Antarctic and Greenland ancient ice and recent snow at ultratrace levels by ultrasensitive laser-excited atomic fluorescence spectrometry with electrothermal atomization are presented. Ultratrace concentration Cd standards allowed calibration of the spectrometer down to the 0.1 pg Cd g-r level. The limit of detection was found to be as low as about 0.01 pg Cd gg' using 50-4 sample volumes, which corresponds to a minimum detected Cd absolute mass of about 0.5 fg. Various Antarctic and Greenland samples were then analysed without any preliminary preconcentration step.

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