Studies on copper(II)- and zinc(II)-mixed ligand complexes of humic acid

Alexandre G.S. Prado; Jocilene D. Torres; Paolla C. Martins; Jonas Pertusatti; Lucas B. Bolzon; Elaine A. Faria

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Studies on copper(II)- and zinc(II)-mixed ligand complexes of humic acid

机译：腐殖酸铜（II）和锌（II）混合配体配合物的研究

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Interactions between humic acid (HA), extracted from Brazilian peat soil, and cations of copper(II) and zinc(II) have been examined by infrared spectroscopy, and electrochemical and thermogravimetric analyses. Spectral studies revealed that the interaction with metals occurred mainly at the carboxylic acid groups of HA. The stability constants of HA complexes formed with Cu~(2+) and Zn~(2+) were found, by square wave voltammetry and application of the Lingane model, to be 8.93 x 10~(10) and 2.92 x 10~2, respectively. Thermal analysis indicated that the stability of HA was increased by the presence of divalent cations of copper and zinc.

机译：从巴西泥炭土壤中提取的腐殖酸（HA）与铜（II）和锌（II）阳离子之间的相互作用已通过红外光谱以及电化学和热重分析进行了研究。光谱研究表明与金属的相互作用主要发生在HA的羧酸基团上。通过方波伏安法和应用Lingane模型，发现由Cu〜（2+）和Zn〜（2+）形成的HA配合物的稳定常数为8.93 x 10〜（10）和2.92 x 10〜2 ，分别。热分析表明，铜和锌的二价阳离子的存在增加了HA的稳定性。

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来源
《Journal of Hazardous Materials》 |2006年第3期|p.585-588|共4页
作者
Alexandre G.S. Prado; Jocilene D. Torres; Paolla C. Martins; Jonas Pertusatti; Lucas B. Bolzon; Elaine A. Faria;
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作者单位

Instituto de Quimica, Universidade de Brasilia, CP 4478, 70904-970 Brasilia-DF, Brazil;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
原文格式 PDF
正文语种 eng
中图分类工程基础科学;
关键词
humic acid; thermal decomposition; stability constants;

机译：腐殖酸;热分解;稳定性常数;

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Studies on copper(II)- and zinc(II)-mixed ligand complexes of humic acid

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