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A vapor collection and thermal desorption method to measure semiochemical release rates from controlled release formulations

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Abstract

Chemicals (bp 270–490 °C/1 atm) evaporated from a controlled-release formulation dispenser were carried by an airflow to a collector packed with a polymeric adsorbent. After a set time, the chemicals were recovered by thermally desorbing them onto a gas-liquid chromatograpic column. They were then separated and quantified. The apparatus is described, and the requirements for its successful use are discussed. The soundness of the thermal desorption technique was confirmed by comparison with another technique: solvent elution from the collector. The advantages of the former technique are discussed.

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Author notes

  1. John H. Cross

    Present address: Monsanto Company, P.O. Box 711, 77511, Alvin, Texas

Authors and Affiliations

  1. Insect Attractants, Behavior, and Basic Biology Research Laboratory, Agricultural Research, Science and Education Administration, USDA, 32504, Gainesville, Florida

    John H. Cross

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  1. John H. Cross
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Mention of a commercial or proprietary product in this paper does not constitute an endorsement of that product by the USDA.

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Cross, J.H. A vapor collection and thermal desorption method to measure semiochemical release rates from controlled release formulations. J Chem Ecol 6, 781–787 (1980). https://doi.org/10.1007/BF00990402

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  • DOI: https://doi.org/10.1007/BF00990402

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