Speciation Studies of Some Metal Complexes with L-Aspartyl-L-phenylalanine Methyl Ester by Potentiometry

Makoto AiHARA, Fudeko Tanaka, Minori Fujimoto, Kô Takehara

研究成果: ジャーナルへの寄稿学術誌査読

5 被引用数 (Scopus)

抄録

The stoichiometry and stability constants of the complexes formed between nickel(II), cobalt(II), copper(II) and manganese(II) with L-aspartyl-L-phenylalanine methyl ester (aspartame, LH) have been determined potentiometrically at 25° C and m=0.1. Nickel(II) and cobalt(II) react with aspartame to form ML, ML2 and ML3 type complexes. Copper(II) forms ML and ML2 type complexes. On the other hand, manganese(II) forms ML type complexes. The Irving-Williams’ order, Co(II)<Ni(II)<Cu(II), was found to be satisfied for ML+ complexes. Complex distribution depending on pH and metal/ aspartame ratio is given for these systems.

本文言語英語
ページ(範囲)755-759
ページ数5
ジャーナルanalytical sciences
8
6
DOI
出版ステータス出版済み - 1月 1 1992

!!!All Science Journal Classification (ASJC) codes

  • 分析化学

フィンガープリント

「Speciation Studies of Some Metal Complexes with L-Aspartyl-L-phenylalanine Methyl Ester by Potentiometry」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル