Abstract

In deciding between alternative sampling systems for the absorption spectrometric analysis of a small quantity of material, a useful figure of merit is the quantity LT/V, where L is the length of the light path in the sample, V is the volume occupied by the sample, and T is the fractional beam energy passed by the sampling system when none of the sample material is present. It is shown that LT/V is inversely proportional to the amount of sample required for analysis, permitting the direct comparison of such diverse approaches as the KBr micropellet technique and low-concentration gas analysis.

© 1961 Optical Society of America

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