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: Plant -> mangrove -> leaves

Citations 1

"Flow Injection - Electrochemical Hydride-generation Technique For Atomic Absorption Spectrometry"
J. Anal. At. Spectrom. 1992 Volume 7, Issue 2 Pages 287-292
Yuehe Lin, Xiaoru Wang, Dongxing Yuan, Pengyuan Yang, Benli Huang and Zhixia Zhuang

Abstract: A flow injection - electrothermal hydride generation technique for AAS has been developed in order to avoid the use of sodium tetrahydroborate, which is capable of introducing contamination. A specially designed thin-layer electrolytic flow cell (diagram given) for hydride generation was used in a normal flow injection system coupled to an electrically heated T-tube atomizer for atomic absorption measurements. The sample was injected into the electrolyte carrier stream flowing to the electrolytic cell, where hydride-forming elements were reduced to gaseous hydrides. The effects of factors such as the eletrode material, electrolyte, current density and carrier stream flow rate, on the rate of formation of the hydride and interferences were studied. The technique was used to determine of As in mangrove leaves, Se in traditional Chinese medicines and Sb in polyester film. The detection limits were 0.45, 0.62 and 0.92 ng mL-1 of As, Se and Sb, respectively.
Arsenic Selenium Antimony Spectrophotometry Electrochemical product generation Volatile generation Interferences Volatile generation