Chapter
Biorational
Downloaded by UNIV OF CALIFORNIA SANTA BARBARA on May 29, 2018 | https://pubs.acs.org Publication Date: November 22, 1988 | doi: 10.1021/bk-1988-0379.ch033
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Control Mating
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Crop
Pests
Disruption
Residue Analyses of Z-9-Dodecen-1-yl Acetate and Z-11-Tetradecen-1-yl Acetate in Grapes 1
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Terry D. Spittler , Harrison C. Leichtweis , and Timothy J. Dennehy 1
Analytical Laboratories, New York State Agricultural Experiment Station, Cornell University, Geneva, NY 14456 Department of Entomology, New York State Agricultural Experiment Station, Cornell University, Geneva, NY 14456-0462 2
Z-9-dodecen-1-yl acetate (Z-9-DDA) and Z-11tetradecen-1-yl acetate(Z-11-TDA), primary components of grape berry moth pheromone, were applied in vineyards via tie-on dispensers for the entire growing season. Mature grapes (100G) were blended and extracted with acetone; following the addition of water, the analytes were extracted into hexane which, after evaporation, was adsorbed onto a Florisil Seppak. E l u t i o n was with 10% acetone-hexane. Chromatography (H-P Model #5890) was on a Supelcowax 10 capillary column, 30M x 0.25 mM I.D. x 0.25 µM coating. Temperature program: 80°C - 130°C @ 5 ° / m i n , 130°C - 200°C at 4 ° / m i n , hold 9 min. Detection by HP-MSD Model #5970B was in the selective ion mode at 166 M/E and 194 M/E for Z-9-DDA and Z-11TDA, respectively. Corresponding retention times were 17.7 and 22.7 min. Sensitivity was
