T. Richard Mon
United States Department of Agriculture
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Journal of Chromatography A | 1973
Kent E. Matsumoto; David Partridge; Arthur B. Robinson; Linus Pauling; Robert A. Flath; T. Richard Mon; Roy Teranishi
Abstract Since we are using the gas chromatography of volatile urine constituents in a procedure to diagnose diseases, we wished to identify the components of our sample. Forty-two compounds were identified by gas chromatography—mass spectroscopy, using a modified head-space collection technique. A co-injection procedure was used to place these components on a chromatogram from our disease diagnosis instrument.
Journal of Chemical Ecology | 1988
Thomas H. Schultz; Robert A. Flath; Donald J. Stern; T. Richard Mon; Roy Teranishi; Sheila McKenna Kruse; Barbara Butler; Walter E. Howard
Samples of female coyote urine were taken once or twice each week during the winter and spring for two years. Headspace analysis was employed with Tenax GC trapping and GC-MS. Tenax trapping was started in less than 1 hr after sampling, and mild conditions were used to minimize losses of highly volatile and labile compounds. Thirty-four compounds were identified. They include sulfur compounds, aldehydes and ketones, hydrocarbons, and one alcohol. The principal constituent is methyl 3-methylbut-3-enyl sulfide, which usually comprised 50% or more of the total volatiles observed. The concentration of many constituents varied widely. This appeared to be quasiperiodic for five of the constituents, with a period of a few weeks, and with pronounced maxima at the peak of estrus. Apparently these compounds are 3-methyltetrahydrothiophene, methyl 3-methylbutyl sulfide, octanal, dodecanal, and bis(3-methylbut-3-enyl) disulfide. One or more of these compounds may have pheromonal activity in coyote relationships.
Journal of Agricultural and Food Chemistry | 1977
Thomas H. Schultz; Robert A. Flath; T. Richard Mon; Sue B. Eggling; Roy Teranishi
Journal of Agricultural and Food Chemistry | 1990
Robert A. Flath; Douglas M. Light; Eric B. Jang; T. Richard Mon; Janie O. John
Journal of Agricultural and Food Chemistry | 1985
Tsutomu Habu; Robert A. Flath; T. Richard Mon; Julia F. Morton
Journal of Agricultural and Food Chemistry | 1971
Thomas H. Schultz; Robert A. Flath; T. Richard Mon
Journal of Agricultural and Food Chemistry | 1993
Robert A. Flath; Eric B. Jang; Douglas M. Light; T. Richard Mon; Lori A. Carvalho; Ronald G. Binder; Janie O. John
Journal of Agricultural and Food Chemistry | 1989
Ronald G. Binder; Robert A. Flath; T. Richard Mon
Journal of Agricultural and Food Chemistry | 1983
Robert A. Flath; T. Richard Mon; Gabrielle Lorenz; C. James Whitten; James W. Mackley
Journal of Agricultural and Food Chemistry | 1989
Robert A. Flath; Kent E. Matsumoto; Ronald G. Binder; Roy T. Cunningham; T. Richard Mon