University of North Florida
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Stuart Chalk, Ph.D.
Department of Chemistry
University of North Florida
Phone: 1-904-620-1938
Fax: 1-904-620-3535
Website: @unf

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Classification: Reference Material -> NRCC -> SLRS-3 -> Riverine water

Citations 1

"Evaluation Of Electrochemical Hydride Generation For The Determination Of Total Antimony In Natural-waters By Electrothermal Atomic Absorption Spectrometry With In-situ Concentration"
J. Anal. At. Spectrom. 1996 Volume 11, Issue 3 Pages 225-230
W.-W. Ding and R. E. Sturgeon

Abstract: A continuous-flow (timed injection) electrochemical hydride generation system was developed for the determination of total Sb in river water and seawater. Lead was used as cathode material for the production of stibine. Both Sb-III and Sb-V were equally converted into their hydrides by electrochemical means with 92±4% efficiency. The hydride was trapped in a Pd-coated graphite furnace prior to atomization. An absolute detection limit of 45 pg (3s(blank)) and a concentration detection limit of 0.02 µg L-1 were obtained using 2 mi sample volumes. The precision of replicate measurements at the 0.2 pg L-1 level (0.5 ng absolute mass level) was better than 6% relative standard deviation. The accuracy of the approach was verified through the analysis of National Research Council of Canada certified reference materials SLRS-2 and SLRS-3 River Water and NASS-4 Open Ocean Seawater.
Antimony, total Spectrophotometry Electrochemical product generation Reference material Interferences Timed injection