Apps, P.J.; Viljoen, H.W.; Pretorius, V.; Bigalke, R.D.(Published by the Government Printer, Pretoria., 1988)
Volatiles emitted by male Amblyomma hebraeum while feeding on a rabbit were quantitatively sampled by
the dynamic solvent effect and analysed by capillary gas-liquid chromatography and mass spectrometry.
Changes in ...
Winterbach, Hanlie Evelyn Kathleen; Petzer, Inge-Marie; Apps, P.J.; Giesecke, W.H.; Verwoerd, Daniel Wynand(Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1993)
Milk samples were taken daily or twice weekly, and blood samples twice weekly, from six clinically healthy
dairy cows. Acetone concentration was determined by a new headspace gas-chromatographic method
that proved to be ...
Winterbach, Hanlie Evelyn Kathleen; Apps, P.J.; Verwoerd, Daniel Wynand(Published by the Agricultural Research Council, Onderstepoort Veterinary Institute., 1991)
An automated headspace gas-chromatographic method has been developed for the determination of acetone in the milk, blood and urine of dairy cows. Five ml samples were saturated with 2g of sodium chloride and equilibrated ...
