On the Interaction Between Nicotine and Metal(II) Ions in Aqueous Solutions

被引：4
|
作者：
Manfredi, C. [1 ]
Vero, S. [1 ]
Vasca, E. [2 ]
Perrotta, D. [1 ]
Trifuoggi, M. [1 ]
Sorrentino, I. [1 ]
Ferri, D. [1 ]
机构：
[1] Univ Naples Federico II, Dept Chem Sci, Via Cintia, I-80126 Naples, Italy
[2] Univ Salerno, Dipartimento Chim & Biol, Via Ponte Don Melillo, I-84084 Salerno, Italy
来源：
JOURNAL OF SOLUTION CHEMISTRY | 2016年 / 45卷 / 07期
关键词：
Nicotine; Hydrolysis; Equilibrium analysis; Metal (II)/nicotine complexes; Potentiometry; UV/Vis absorption; OXIDATIVE STRESS; NEUROTOXICITY; HYDROLYSIS;
D O I：
10.1007/s10953-016-0483-9
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
A chemical investigation of the interaction mechanisms of nicotine with the metal(II) ions Pb, Fe, and Cu is reported. The complex formation between nicotine and metal(II) has been investigated at 25.00 0.02 C, in constant ionic medium (as sodium perchlorate, or sodium chloride), by UV/Vis spectrophotometric and potentiometric methods. The experimental method consists of coulometric or volumetric titrations. The protolysis constants of nicotine have been determined under the same experimental conditions. The pH investigated spans between 3 and 10. By using the specific ion interaction theory the conditional constants of nicotine have been extrapolated at zero ionic strength. The results of the graphical and numerical methods adopted indicate, for all the systems investigated, the formation of a predominating Me(II)/nicotine mononuclear complexes.
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页码：971 / 989
页数：19
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