The following is an abstract for the selected article. A PDF download of the full text of this article is available here. Members may download full texts at no charge. Non-members may be charged a small fee for certain articles.
A High Throughput Optical Accessory for Improved Measurement of the Infrared Spectra of Diffusely Scattering Samples: Description and Assessment
Volume 38, Number 5 (Oct. 1984) Page 700-705
Jakse, Frank P.; Friedman, Robert Mark; Freeman, John J.
The performance of a high throughput optics bench (HTOB) was compared to the conventional collection optics of an FT-IR spectrometer. Samples were studied as pressed KBr wafers or self-supporting wafers. The former sample preparation suppresses scattering but limits adsorption studies for these samples; in this instance, the HTOB showed no distinct advantage over the straight transmission (STTR) optics. For samples exhibiting significant scattering, the modified optics showed a ~5/1 improvement in signal-to-noise for the transmission spectrum compared to that obtained in the conventional configuration. This offers a 25-fold reduction in data collection time for comparable spectra. This amelioration was graphically demonstrated in the study of adsorption of n-butylamine on titania. The relative contribution of the components of the HTOB to the improvement, the limitations of the accessory, and the range of applicability are discussed.