The sensitivity of gas chromatography/Fourier transform infrared spectroscopy (GC/FT-IR) may be significantly improved by use of small bore gold-coated glass gas cells. This note describes the method of preparing internally gold-coated glass or quartz tubes for GC-IR applications.
L. V. Azarraga, "Gold Coating of Glass Tubes for Gas Chromatography/Fourier Transform Infrared Spectroscopy "Light-Pipe" Gas Cells," Appl. Spectrosc. 34, 224-225 (1980)