Determination of conditional stability constants for phytic acid complexes with Mg2+, Ca2+ and Zn2+ ions using electrospray ionization mass spectrometry

被引：7
作者：
Ceglowski, Michal [1 ]
Balcerzak, Patrycja [1 ]
Franski, Rafal [1 ]
Schroeder, Grzegorz [1 ]
机构：
[1] Adam Mickiewicz Univ, Fac Chem, Umultowska 89b, PL-61614 Poznan, Poland
来源：
EUROPEAN JOURNAL OF MASS SPECTROMETRY | 2016年 / 22卷 / 05期
关键词：
ESI-MS; phytic acid; EDTA; conditional stability constant; competitive method; metal ions; HEAVY-METAL IONS; LIGANDS; SELECTIVITIES; DISSOCIATION; REMOVAL;
D O I：
10.1255/ejms.1444
中图分类号：
O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];
学科分类号：
070203 ; 070304 ; 081704 ; 1406 ;
摘要：
The electrospray ionization mass spectrometry competitive method has been used for the determination of the conditional stability constants of phytic acid complexes with Mg2+, Ca2+ and Zn2+ ions. The competing complexation between ethylenediaminetetraacetic acid (EDTA) and phytic acid was studied. For EDTA complexes with Mg2+, Ca2+ and Zn2+ ions, the values of the conditional stability constants are known and were used for the calculation of this constant for the phytic acid complexes. The values obtained are in agreement with the literature data. The method applied permitted a fast and simple determination of conditional stability constants by measuring the response of the ionized coordination complexes.
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收藏
页码：245 / 252
页数：8
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