Purification and Analysis of Hempa by Chromatographic Techniques2

Autor: Claude H. Schmidt, Andrew C. Terranova
Rok vydání: 1967
Předmět:
Zdroj: Journal of Economic Entomology. 60:1659-1663
ISSN: 1938-291X
0022-0493
Popis: Paper chromatography was of little value in determining the purity of hempa because of co-chromatography. Thin-layer chromatography in 8:2 benzene: ethanol on silica gel G successfully separated hempa from 7 contaminating materials. Also, gas chromatography on an 8-foot column of 6% (w/w) DEGS separated the 8 components present in a sample of C14-labeled hempa. The quantitation of the mass and radioactive responses was linear from 0.2 ng to at least 20 ng.
Databáze: OpenAIRE