title: Analysis of zone-melted ultra-pure organic compounds: a new quantitative differential thermal analysis method.
abstract: A method for the rapid quantitative determination of impurities in ultra-pure organic compounds is described. It is based on the difference in slopes of the curves obtained when the difference in temperature between the sample and a reference shield is plotted against time. The results are compared with those obtained by thermal analysis.
authors.affiliation: Department of Neurobiology in Psychiatry, University of Maryland, Baltimore, Maryland, U.S.A.
authors.forename: R
authors.initials: R
authors.lastname: Friedenberg
authors.forename: P J
authors.initials: PJ
authors.lastname: Jannke