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Mammalian exocrine secretions XVIII : chemical characterization of interdigital secretion of red hartebeest, Alcelaphus buselaphus caama

Reiter, B.; Burger, B. V.; Dry, J. (Springer Verlag, 2003-10)

Gas chromatography, coupled gas chromatography-mass spectrometry (electron impact mode and chemical ionization with methane as reactant gas), gas chromatography-infrared spectroscopy, and derivatization techniques were ...

Temporal changes in the neonatal recognition cue of Dohne Merino Lambs (Ovis aries)

Viviers, Marlize Z.; Burger, B. V.; Le Roux, Niel J.; Morris, John; Le Roux, Maritha (Oxford University Press (OUP), 2014-02)

The strong bond that is formed between ewe and lamb after parturition is important for lamb survival. Evidence exists that the ewe mainly employs olfactory recognition cues to distinguish her lamb from other lambs in the ...

Thermal modulator array for analyte modulation and comprehensive two-dimensional gas chromatography

Burger, B. V.; Snyman, Tertia; Burger, Wina J. G.; Van Rooyen, Willie F. (Wiley-VCH Verlag, 2003-01)

Segmented thermal modulators were fabricated for the modulation of column effluent in one-dimensional gas chromatography, comprehensive two-dimensional gas chromatography, and as sample introduction devices in other ...

Semiochemicals of the scarabaeinae: VI. Identification of EAD-active constituents of abdominal secretion of male dung beetle, Kheper nigroaeneus

Burger, B. V.; Petersen, W. G. B. (Springer Verlag, 2002-03)

Using gas chromatography with flame ionization detection (FID) anal electroantennographic detection (EAD) in parallel, and employing chiral and achiral capillary columns, three constituents of the abdominal sex-attracting ...

Development of second-generation sample enrichment probe for improved sorptive analysis of volatile organic compounds

Burger, B. V.; Le Roux, M.; Marx, B.; Herbert, S. A.; Amakali, K. T. (Elsevier, 2011-03)

The sample enrichment probe (SEP) has recently been introduced as a user-friendly and cost-effective method for the sorptive extraction of volatile organic analytes from gaseous and aqueous samples for GC and GC-MS analyses. ...

Lizard epidermal gland secretions I : chemical characterization of the femoral gland secretion of the sungazer, Cordylus giganteus

Louw, Stefan; Burger, B. V.; Le Roux, Maritha; Van Wyk, Johannes H. (Springer Verlag, 2007-09)

The giant girdled lizard or sungazer, Cordylus giganteus, is endemic to South Africa. It has been suggested that in this species, as in other lizard species, epidermal glands in the femoral, pre-cloacal regions, and cloacal ...

Lizard epidermal gland secretions II : chemical characterization of the generation gland secretion of the sungazer, Cordylus giganteus

Louw, Stefan; Burger, B. V.; Le Roux, Maritha; Van Wyk, Johannes H. (American Chemical Society and American Society of Pharmacognosy, 2011-06)

In lizards, the epidermal glands of the femoral and precloacal regions are involved in the production of semiochemicals. In addition to its femoral glands, the giant girdled lizard, or sungazer, Cordylus giganteus, which ...

Simplified analysis of organic compounds in headspace and aqueous samples by high-capacity sample enrichment probe

Burger, B. V.; Marx, Brenda; Le Roux, Maritha; Burger, W. J. G. (Elsevier, 2006-07)

A sample enrichment probe (SEP) consisting of a thin rod of an inert material and provided at one end with a short sleeve of polydimethylsilicone rubber was used for the high-capacity sample enrichment of analytes from ...

Elemental sulfur identified in urine of cheetah, Acinonyx jubatus

Burger, B. V.; Visser, Runine; Moses, Alvira; Le Roux, Maritha (Springer Verlag, 2006-06)

The urine of the cheetah, Acinonyx jubatus, is almost odorless, and probably for this reason, it has not attracted much attention from scientists. Using gas chromatography-mass spectrometry, we identified 27 and 37 ...

Headspace gas analysis : quantitative trapping and thermal desorption of volatiles using fused-silica open tubular capillary traps

Burger, B. V.; Munro, Zenda (Elsevier, 1986)

A system has been devised with which volatiles can be effectively trapped from headspace gas samples at relatively high flow-rates. Material is trapped in fused-silica capillary traps, 1 m in length, and coated with either ...