Quantitative analysis of solids in motion by transient infrared emission spectroscopy using hot-gas jet excitation

Journal Article · Mon Oct 01 00:00:00 EDT 1990 · Analytical Chemistry (Washington); (USA)

DOI:https://doi.org/10.1021/ac00218a005· OSTI ID:6287600

Jones, R W; McClelland, J F ^[1]

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1. Iowa State Univ., Ames (USA)

Quantitative compositional analysis of optically thick solids in motion is demonstrated by using transient infrared emission spectroscopy (TIRES). TIRES greatly reduces the self-absorption that normally degrades conventional emission spectra so that they closely resemble blackbody spectra. Quantitative compositional analyses of poly((methyl methacrylate)-co-(butyl methacrylate)) and poly(ethylene-co-(vinyl acetate)) with standard errors of prediction under 1% were achieved with only a few seconds of data acquisition using principal component regression. Use of a hot-gas jet in place of a laser in the TIRES technique allows study of materials that do not absorb strongly at common laser wavelengths while reducing cost and complexity.

• DOE Contract Number: W-7405-ENG-82
• OSTI ID: 6287600
• Journal Information: Analytical Chemistry (Washington); (USA), Vol. 62:19; ISSN 0003-2700
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
METHACRYLATES
QUANTITATIVE CHEMICAL ANALYSIS
POLYCARBONATES
EMISSION SPECTROSCOPY
EXPERIMENTAL DATA
SOLIDS
CARBON COMPOUNDS
CARBONATES
CARBOXYLIC ACID SALTS
CHEMICAL ANALYSIS
DATA
INFORMATION
NUMERICAL DATA
OXYGEN COMPOUNDS
SPECTROSCOPY
400102* - Chemical & Spectral Procedures