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Interaction of pyridine-2,5-dicarboxylic acid with heavy metal ions in aqueous solutions

✍ Scribed by Eugenijus Norkus; Ernestas Gaidamauskas; Irena Stalnionienė; Debbie C. Crans

Publisher
John Wiley and Sons
Year
2005
Tongue
English
Weight
112 KB
Volume
16
Category
Article
ISSN
1042-7163

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✦ Synopsis

Interactions between pyridine-2,5dicarboxylic acid and Zn(II), Ni(II), Pb(II), Cd(II), and Cu(II) were characterized in aqueous solutions (20 • C; I = 0.4 (KNO 3 )) by means of d.c.-polarography, spectrophotometry, and 1 H NMR spectroscopy. Polarography was used to determine the concentration of free metal ions in the presence of 10-fold excess ligand in weakly alkaline solutions, and to determine stability constants for the Zn(II), Cd(II), and Cu(II) complexes with pyridine-2,5-dicarboxylic acid. 1 H NMR spectroscopy was used to further characterize complex formation.

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Interaction of pyridine- and 4-hydroxypyridine-2,6-dicarboxylic acids with heavy metal ions in aqueous solutions
✍ Eugenijus Norkus; Irena Stalnionienė; Debbie C. Crans 📂 Article 📅 2003 🏛 John Wiley and Sons 🌐 English ⚖ 109 KB

## Abstract Interactions between pyridine‐2,6‐dicarboxylic acid and 4‐hydroxypyridine‐2,6‐dicarboxylic acid with Cu(II), Pb(II), and Cd(II) ions were characterized in aqueous solutions (20°C; I = 0.4 (KNO~3~)) by means of dc‐polarography. In solutions with excess of ligand, Cu(II), Pb(II), and Cd(I