Analysis of Radioactive Waste Supernate by Laser-Raman Spectrometry
- 1 March 1975
- journal article
- research article
- Published by Taylor & Francis in Nuclear Technology
- Vol. 25 (3), 576-579
- https://doi.org/10.13182/nt75-a24395
Abstract
A laser-Raman spectrometric method was developed for the determination of polyatomic ions in alkaline high-level radioactive waste super-nates. From peak heights of well-resolved Raman hands, concentrations of NO2−, SO42−, CrO42−, PO43−, and Al(OH)4− ions are determined relative to NO3− ion concentrations in raw solutions. The concentration of an NO3− ion is determined independently by quantitative dilution of an aliquot with standardized 2M NaClO4. The relative precision at the 95% confidence level for a single determination is ±5%. Although Savannah River Plant waste samples are pale yellow and turbid, centrifugation clarifies them sufficiently for reproducible spectra to be recorded with 488-nm Ar+ excitation.Keywords
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