Journal
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
Volume 400, Issue 10, Pages 3315-3322Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s00216-011-4852-3
Keywords
Laser-induced breakdown spectroscopy; Slurry; Multivariate analysis; Nuclear waste; Coating
Funding
- US Department of Energy [DE-FC26-98 FT40395]
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Laser-induced breakdown spectroscopy (LIBS) has been employed for the analysis of slurry samples. Quantitative analysis of slurry samples is crucial and challenging. The problems associated with slurry samples include splashing, surface turbulence, and the difficulties of obtaining reproducible samples due to sedimentation. The LIBS analysis has achieved limited success due to inherent disadvantages when applied to slurry samples. In order to achieve improved measurement precision and accuracy, a spin-on-glass sampling method was evaluated. Five elements (Al, Ca, Fe, Ni, and Si) were examined in five slurry simulants containing varying amounts of each ion. Three calibration models were developed by using univariate calibration, multiple linear regression, and partial least square regression. LIBS analysis results obtained from the partial least square regression model were determined to be the best fit to results obtained from inductively coupled plasma optical emission spectroscopy analysis.
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