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Flow-injection in-valve solid-phase extraction spectrophotometric determination of uranium in geological samples

✍ Scribed by Kate Grudpan; Jaroon Jakmunee; Ponlayuth Sooksamiti

Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
202 KB
Volume
10
Category
Article
ISSN
0895-7533

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✦ Synopsis

Flow-injection analysis (FIA) system incorporating in-valve solid-phase extraction microcolumn for on-line separation and preconcentration using a new resin, U/TEVA.Spec, has been proposed for the spectrophotometric determination of uranium in geological samples using 4-(2-pyridylazo) resorcinol (PAR) as a color agent. Optimization of the condition involved in the system was investigated. Possibility of a single standard calibration is discussed.

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✍ Marco A. S. Aguiar; Karem S. G. Marquez; Ivano G. R. Gutz πŸ“‚ Article πŸ“… 2000 πŸ› John Wiley and Sons 🌐 English βš– 267 KB πŸ‘ 1 views

A new method for Β―ow injection analysis (FIA) of traces of uranium by catalytic amperometric detection in nitrate medium is described. Interfering oxygen was removed by in-line degassing. A simple adapter was designed to afford FIA with batch cells comprising a hanging mercury drop electrode. The ca