Multivariate Analysis for Quantification of Plutonium(IV) in Nitric Acid Based on Absorption Spectra

Development of more effective, reliable, and fast methods for monitoring process streams is a growing opportunity for analytical applications. Many fields can benefit from online monitoring, including the nuclear fuel cycle where improved methods for monitoring radioactive materials will facilitate...

Full description

Saved in:
Bibliographic Details
Published in:Analytical chemistry (Washington) 2017-09, Vol.89 (17), p.9354-9359
Main Authors: Lines, Amanda M, Adami, Susan R, Sinkov, Sergey I, Lumetta, Gregg J, Bryan, Samuel A
Format: Article
Language:English
Subjects:
Absorption spectra
Analytical chemistry
Calibration
Chemical speciation
Chemistry
Environmental monitoring
Internet
Mathematical analysis
Monitoring
Multivariate analysis
Nitric acid
Nondestructive testing
Nuclear fuel cycle
Plutonium
Radioactive materials
Species
Spectroscopy
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Development of more effective, reliable, and fast methods for monitoring process streams is a growing opportunity for analytical applications. Many fields can benefit from online monitoring, including the nuclear fuel cycle where improved methods for monitoring radioactive materials will facilitate maintenance of proper safeguards and ensure safe and efficient processing of materials. Online process monitoring with a focus on optical spectroscopy can provide a fast, nondestructive method for monitoring chemical species. However, identification and quantification of species can be hindered by the complexity of the solutions if bands overlap or show condition-dependent spectral features. Plutonium­(IV) is one example of a species which displays significant spectral variation with changing nitric acid concentration. Single variate analysis (i.e., Beer’s Law) is difficult to apply to the quantification of Pu­(IV) unless the nitric acid concentration is known and separate calibration curves have been made for all possible acid strengths. Multivariate or chemometric analysis is an approach that allows for the accurate quantification of Pu­(IV) without a priori knowledge of nitric acid concentration.
ISSN:0003-2700
1520-6882
DOI:10.1021/acs.analchem.7b02161