@article{oai:ir.kagoshima-u.ac.jp:00008666,
 author = {Ohki, Akira and 大木, 章 and Yamura, Masanobu and ヤムラ, マサノブ and Sumiyoshi, Yuko and スミヨシ, ユウコ and Takagi, Makoto and 高木, 誠 and Maeda, Shigeru and 前田, 滋},
 issue = {2},
 journal = {Analytical sciences},
 month = {},
 note = {The solvent extraction of p-nitrophenol from aqueous acid solutions into cyclohexane with trioctylphosphine (TOP), trioctylphosphine oxide (TOPO), triphenylphosphine (TPP), triphenylphosphine oxide (TPPO) and triphenylphosphine sulfide (TPPS) was examined. The results were compared with those with trioctylamine (TOA). The extracted p-nitrophenol was found to form a 1;1 hydrogen-bonded associate with bases in the organic phase. The association constant in the organic phase was greater in the order TOPO>TPPO>TOP>TOA>TPPS>TPP. The ability of an extractant for an acid is considered from its chemical properties as a base in the organic phase. It was concluded that it may be related to the association constant with the acid in the solvent.},
 pages = {291--294},
 title = {Solvent Extraction of Phthalate Isomer Dianions by the Use of Dicationic Anion-Exchange Extractants},
 volume = {6},
 year = {1990},
 yomi = {オオキ, アキラ and タカギ, マコト and マエダ, シゲル}
}