holder

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.


Considerations for Infrared Ultramicrosampling

Volume 27, Number 6 (Dec. 1973) Page 431-435

Griffiths, Peter R.; Block, Frank


Factors determining the sensitivity of infrared microsampling are discussed. Experiments are described to explain the sample loss that occurs during the preparation of KBr microdisks using organic molecules of fairly low volatility. The principal loss in these experiments happens because of evaporation of the sample while the mixture with KBr is being transferred to the die. If solvent had to be evaporated from the sample prior to preparing the disk, the main loss would occur during this step. It is suggested that the use of dilute solutions in small volume will lead to greater potential sensitivity than the microdisk technique, even though cells of greater cross sectional area may have to be used.