A number of streak reagents, used in detecting zones of colorless substances on the chromatographic column, have been studied in regard to their usefulness in the detection of certain compounds. These reagents are all sensitive at concentrations of 0.01 molar.Several new streak reagents have been developed.

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The object of the present work was to determine what factors were responsible for the adsorption of a given substance on a given adsorbent. It was hoped that it would be possible to construct a mathematical function relating the interactions in the chromatographic system to the movement of the adsorptive zone.

VOLUME 2 2, NO. 6, JUNE 1950 811 7. Nickel Dimethylglyoxime Reagent (2). A 0.1 solution of nickel sulfate is saturated with dimethylglyoxime and the supernatant liquid is used as the streak reagent.