Measurement of release rates of gossyplure from controlled release formulations by mini-airflow method |
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Authors: | Mitzi Golub John Weatherston M. H. Benn |
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Affiliation: | (1) Albany International-Controlled Release Division, 110 A Street, 02194 Needham Heights, Massachusetts;(2) Department of Chemistry, University of Calgary, T2N 1N4 Calgary, Alberta, Canada;(3) Present address: Department of Biology, Laval University, G1R 7P4 Quebec, Canada |
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Abstract: | The use of the mini-airflow apparatus for the measurement of gossyplure release rates is described. The method involves the passage of air over controlled-release dispensers containing radiolabeled pheromone, through a coarse frit, and entrapment of the gossyplure on glass beads. Desorption of the beads with solvent is followed by quantification by liquid scintillation counting. The results of release rate measurements from hollow fibers, red rubber septa, and red rubber wicks are discussed. |
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Keywords: | Gossyplure release rates formulations controlled release hollow fibers septa wicks |
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