title: Separation of polychlorinated biphenyls from mineral oil using alkylammonium ion-bonded silica stationary phases.
abstract: The potential of alkylammonium ion-bonded silica stationary phases for effective and simple pretreatment for determination of polychlorinated biphenyls (PCBs) in mineral oil samples is presented in this paper. The separation between PCBs and aliphatic hydrocarbons by normal phase chromatography was improved by using the alkylammonium ion-bonded silica stationary phases instead of alkylamine-bonded silica or other polar stationary phases. The number of alkyl residues bonded to the nitrogen atom was also an important factor of the separation.
authors.affiliation: National Metrology Institute of Japan, National Institute of Advanced Industrial Science and Technology, Tsukuba, Japan. mas-numata@aist.go.jp
authors.forename: Masahiko
authors.initials: M
authors.lastname: Numata
authors.forename: Yoshie
authors.initials: Y
authors.lastname: Aoyagi
authors.forename: Yoko
authors.initials: Y
authors.lastname: Tsuda
authors.forename: Takashi
authors.initials: T
authors.lastname: Yarita
authors.forename: Akiko
authors.initials: A
authors.lastname: Takatsu