I am looking to measure a mixture of triethylamine and water in a micro-Raman instrument. This involves placing the sample under an optical microscope. The "default" sample preparation is to place the sample on a microscope slide.
However, that is not an acceptable solution for my use case. Triethylamine is a volatile substance with a foul odor. A thin film of the substance on a glass slide would quickly evaporate, making the measurement pointless and introducing toxic vapors into my university's shared facility (there is no forced ventilation, like a fume hood, available).
Are there sample containers or procedures for viewing volatile substances under an optical microscope?