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Abstract
A method was developed for estimating the quantity of the pheromone 3-methyl-2-cyclohexen-1-one in a controlled release formulation. The thermal method measured the amount of releasable pheromone remaining in the formulation by using liquid chromatography with a variable wavelength ultraviolet detector. This method is 150 to 250 times more sensitive than the liquid chromatographic method used previously.