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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Britton-Robinson buffer ： ウィキペディア英語版 Britton-Robinson buffer Britton–Robinson buffer (aka BRB aka PEM) is a "universal" pH buffer used for the range pH 2 to pH 12. Universal buffers consist of mixtures of acids of diminishing strength (increasing pKa) so that the change in pH is approximately proportional to the amount of alkali added. It consists of a mixture of 0.04 M H3BO3, 0.04 M H3PO4 and 0.04 M CH3COOH that has been titrated to the desired pH with 0.2 M NaOH. Britton and Robinson also proposed a second formulation that gave an essentially linear pH response to added alkali from pH 2.5 to pH 9.2 (and buffers to pH 12). This mixture consists of 0.0286 M citric acid, 0.0286 M KH2PO4, 0.0286 M H3BO3, 0.0286 M veronal and 0.0286 M HCl titrated with 0.2 M NaOH. ==References== (Britton, H. T. K. and R. A. Robinson. ''J. Chem. Soc.'', 1931, 1456–1462. ) (Mongay Fernández, C. and V. Cerdá Martin ''Talanta'', 1977, 24(12), 747–748 ) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Britton-Robinson buffer」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.