Record Display for the EPA National Library Catalog


Main Title Optimization of GC/FT-IR (Gas Chromatograph/Fourier Transform-Infrared) Measurements. 1. Construction of Light-Pipes.
Author Yang, P. W. J. ; Ethridge, E. L. ; Lane, J. L. ; Griffiths, P. R. ;
CORP Author California Univ., Riverside. Dept. of Chemistry.;Environmental Research Lab., Athens, GA.
Publisher c1984
Year Published 1984
Report Number EPA/600/J-84/423;
Stock Number PB89-208888
Additional Subjects Gas chromatography ; Infrared spectroscopy ; Capillary tubes ; Fourier transformations ; Transmittance ; Borosilicate glass ; Light sources ; Annealing ; Gold ; Metal coatings ; Electron microscopy ; Reprints ;
Library Call Number Additional Info Location Last
NTIS  PB89-208888 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 6p
Conditions under which light-pipes with highly reproducible transmittance are prepared are described. Preparation of borosilicate glass tubing by washing with HF and SiCl2 solution gave the best results. Electron microscopy showed that drawn capillary tubing had a much smoother bore than 'precision-bore' (drilled) tubing, and light-pipes constructed from drawn tubing had a much higher transmittance. Annealing the tubes at 800 C appeared to cause the gold coating to be more tightly held to the glass tubing. Light-pipes that had been annealed at 800 C could have small holes drilled through the tubing without the gold coating lifting. (Copyright (c) 1984 Society for Applied Spectroscopy.)