Abstract
THE separation or purification of aromatic hydrocarbons with high melting points is generally carried out by recrystallization, sublimation or absorption chromatography. Purification by zone melting has also been used for substances available in quantity. Absorption chromatography using activated alumina has been used extensively for separating aromatic hydrocarbons. However, it has been found in this laboratory that some substances were difficult to separate by this technique and single bands taken from the column were found in many cases to contain traces of impurities. The detection and separation of these contaminants has been achieved by a simple micro-sublimation technique.
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References
Haussman, W., Anal. Chem., 26, 619 (1954).
Thomas, J. F., Sanborn, E. N., Maukai, M., and Tebbens, B. D., Anal. Chem., 30, 1954 (1958).
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MELHUISH, W. A Fractional Micro-sublimation Technique. Nature 184, 1933–1934 (1959). https://doi.org/10.1038/1841933a0
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DOI: https://doi.org/10.1038/1841933a0
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