Quantitative analysis of boron oxide in borosilicate glasses by infrared spectroscopy

Journal Article · Sat Nov 01 00:00:00 EST 1986 · Appl. Spectrosc.; (United States)

DOI:https://doi.org/10.1366/0003702864507846· OSTI ID:6809355

Haaland, D M

Classical multivariate least-squares methods have been applied to the quantitative analysis of boron oxide in bulk borosilicate glasses using transmission infrared spectroscopy. However, molecular interactions in the glass result in deviation from Beer's law and cause the analytical B-O overtone band at --2680 cm/sup -1/ to shift to higher energy with increased boron concentration. Therefore, in order to account for the molecular interactions and achieve higher quantitative accuracy, one must use a nonlinear model relating absorbance and concentration. It has been found that if a quadratic correction term is added to the Beer's-law equation, the observed 15 to 25 cm/sup -1/ shift in frequency of the B-O overtone band can be modeled to within the spectral noise. With the use of a model quadratic in boron oxide concentration, the least-squares analysis of boron in glass was determined with an average relative error of 3.3% for glasses with boron oxide concentrations ranging from 0.88 to 2.58%. This compares favorably with the 3% accuracy claimed for ion chromatography exculsion used for calibration. The methods described in this paper are general, and a variety of nonlinear models can be applied whenever Beer's-law deviations are present.

• Research Organization: Sandia National Laboratories, Albuquerque, New Mexico 87185
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 6809355
• Journal Information: Appl. Spectrosc.; (United States), Vol. 41:8
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
BORON OXIDES
QUANTITATIVE CHEMICAL ANALYSIS
BOROSILICATE GLASS
INFRARED SPECTRA
BORON COMPOUNDS
CHALCOGENIDES
CHEMICAL ANALYSIS
GLASS
OXIDES
OXYGEN COMPOUNDS
SPECTRA
400102* - Chemical & Spectral Procedures
052001 - Nuclear Fuels- Waste Processing