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
Email: schalk@unf.edu
Website: @unf

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High purity

Classification: Metal -> tungsten -> high purity

Citations 1

"Ultratrace Determination In High-purity Molybdenum And Tungsten With Ion Chromatographic Trace-matrix Separation. 3. Ultratrace Analysis Using Atomic Spectrometry"
Anal. Chim. Acta 1992 Volume 258, Issue 1 Pages 109-122
A. Seubert

Abstract: Ultratrace anal. of Mo and W using direct coupling of ion chromatography (IC) trace-matrix-sepns. (SMT) and inductively coupled plasma atomic emission spectrometry (ICP-AES) as an atomic spectrometric detection technique is described. The right choice of the nebulizer unit of the ICP system and appropriate chromatography eluents and flow-rates result in a stable, highly sensitive detection system IC-SMT-ICP. The characteristics of ICP-AES as a chromatography detection method and the application of internal standaridization during the measurement of a transient signal are discussed. The importance of the integration time for the registration of transient signals is pointed out. Every elution peak should be covered by 8-16 data points. The final comparison with known batch procedures for trace-matrix-sepns. demonstrates the clear advantage of the combined method IC-SMT-ICP with direct coupling of ion chromatography and atomic spectrometry.
Metals, trace HPIC Spectrophotometry Nebulizer Internal standard Ultratrace