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Enrichment Procedures for Water Analysis by X-Ray Energy Spectrometry

Published online by Cambridge University Press:  06 March 2019

R. Van Grieken ,
K. Bresseleers ,
J. Smits ,
B. Vanderborght  and
M. Vanderstappen
R. Van Grieken
Affiliation:
Department of Chemistry Antwerp University (U.I.A.) B-2610 Wilrijk, Belgium
K. Bresseleers
Affiliation:
Department of Chemistry Antwerp University (U.I.A.) B-2610 Wilrijk, Belgium
J. Smits
Affiliation:
Department of Chemistry Antwerp University (U.I.A.) B-2610 Wilrijk, Belgium
B. Vanderborght
Affiliation:
Department of Chemistry Antwerp University (U.I.A.) B-2610 Wilrijk, Belgium
M. Vanderstappen
Affiliation:
Department of Chemistry Antwerp University (U.I.A.) B-2610 Wilrijk, Belgium
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Abstract

Energy-dispersive X-ray fluorescence might advantageously be used for the determination of trace metals in water. Suspended material can straightforwardly be collected on a 0.45 μm pore-size Nuclepore membrane by filtration. Dissolved ion analysis usually requires a physical or chemical enrichment step. Spotting a 1.5 ml water sample on a Whatman-41 filter within a 29 mm diameter hydrophobic ring and drying by a cold air stream from underneath yielded a 50 ppb sensitivity for many elements, and a 18% accuracy. Filtration of a 200 ml water sample at the natural pH through a pair of Chelest-100 chelating ion-exchange resin loaded filter papers allowed 1-5 ppb sensitivities but suffered from the combination of limited load capacity and significant uptake of usually abundant alkali earth metals.

Type
X-Ray Spectrometry in Environmental Analysis
Information
Advances in X-Ray Analysis , Volume 19: Twenty-Fourth Annual Conference on Applications of X-ray Analysis, August 6-8, 1975 , 1975 , pp. 435 - 447
Copyright
Copyright © International Centre for Diffraction Data 1975

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References

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