title: An abnormal temperature dependence of alkylpyrazines' retention in reversed-phase liquid chromatography.
abstract: Retention behaviors of pyrazine and alkylpyrazines on various stationary phases in reversed-phase liquid chromatography were examined. An abnormal temperature effect on the retention of alkylpyrazines with a mobile phase consisting of acetonitrile and water was observed when changing the column temperature. On the other hand, no similar trend was found with a methanol-water mobile phase. For all the columns investigated in this work, the above tendency to the temperature-dependence was consistently observed, suggesting that the abnormal temperature effect on the retention of alkylpyrazines could be mainly induced by an acetonitrile-based mobile phase.
authors.affiliation: Department of Environmental and Life Sciences, Toyohashi University of Technology, 1-1 Hibarigaoka, Tempakucho, Toyohashi 441–8580, Japan.
authors.forename: Kentaro
authors.initials: K
authors.lastname: Yogo
authors.forename: Chiharu
authors.initials: C
authors.lastname: Takemura
authors.forename: Yoshihiro
authors.initials: Y
authors.lastname: Saito
authors.forename: Kiyokatsu
authors.initials: K
authors.lastname: Jinno
mesh_terms: D002853:Chromatography, Liquid / Q000379:methods*; D011719:Pyrazines / Q000737:chemistry*; D013696:Temperature
chemical_list: D011719:Pyrazines