Mikroanalytische Bestimmung von Juvenilhormonen

Abstract

Different techniques like bioassay, radioimmuno assay, and gas chromatography combined mass spectrometry are in use for a quantitative estimation ofjuvenile hormones in biological samples. Microderivatization of the characteristic epoxy group combined with adsorption on and selective desorption from alumina turns out to be sensitive enough for measuring juvenile hormone titers in the picomole range. With this technique, a first titer curve is shown for the developmental period of the fruit fly, Drosophila melanogaster, and for individuals of the desert locust, Locusta migratoria, as examples for the high sensitivity of this new analytical method.