カワムラ　クニオ   KAWAMURA Kunio   川村　邦男    所属   広島修道大学  人間環境学部    職種   教授
言語種別	英語
発行・発表の年月	2006/02
形態種別	学術論文
査読	査読有り
標題	Separation of aromatic carboxylic acids using quaternary ammonium saltson reversed-phase HPLC 1. Separation behavior of aromatic carboxylic acids
執筆形態	共著
掲載誌名	Sep. Sci. Tech.
掲載区分	国外
巻・号・頁	41(2),pp.379-390
担当範囲	Corresponding author
著者・共著者	◎Kunio Kawamura, Akitsugu Okuwaki
概要	In order to develop separation processes and analytical methods for aromatic carboxylic acids for the coal oxidation products, the separation behavior of aromatic carboxylic acids on a reversed-phase HPLC using eluent containing quaternary ammonium salt has been investigated. The retention behavior of aromatic carboxylic acids possessing one (or two) carboxylic acid group(s) followed the ion-pair partition model, where linear free energy relationship was observed between the capacity factor and the extraction equilibrium constants of benzoic acid and naphthalene carboxylic acid. Besides, the retention behavior followed ion-exchange model with increasing the number of carboxylic acids, where the capacity factor of benzene polycarboxylic acids is proportional to the association constants between aromatic acids and quaternary ammonium ions calculated on the basis of an electrostatic interaction model.