Authors: Wachter, Joseph R.¹; Cremers, David A.²

Source: Applied Spectroscopy, Volume 41, Issue 6, Pages 933-1082 (August 1987) , pp. 1042-1048(7)

Publisher: Society for Applied Spectroscopy

Abstract:

Laser-induced breakdown spectroscopy was used to determine uranium in solution for possible application to process control in nuclear fuel reprocessing facilities. Pulses from a Nd: YAG laser were focused on the surfaces of the liquids in order to generate the sparks. The spark light was spectrally resolved and detected with the use of a time-gated photodiode array. The detection limit for uranium in 4 molar nitric acid was 0.1 g/L. Measurement precisions were 1-2% for a 4.2-g/L solution with the use of 1600 laser sparks, corresponding to a measurement time of about three minutes. A calibration curve was prepared that spanned uranium concentrations from 0.1 to 300 g/L. The effects of some experimental parameters on the analysis are discussed.

Keywords: Analyses for uranium; Emission spectroscopy; Laser spark; Spectroscopic techniques

Document Type: Research article

DOI: http://dx.doi.org/10.1366/0003702874447897

Affiliations: 1: New Technology and Engineering Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 2: Chemical and Laser Sciences Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545

Publication date: 1987-08-01

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