Speciation of binary complexes of Co(II), Ni(II), and Cu(II) with L-phenylalanine in anionic micellar medium

Q3 Chemical Engineering

Chemical Speciation and Bioavailability Pub Date : 2015-07-03 DOI:10.1080/09542299.2015.1087159

V. Kumari, M. Ramanaiah, B. Sailaja

引用次数: 3

Abstract

Abstract Speciation of binary complexes of Co(II), Ni(II), and Cu(II) with L-phenylalanine (Phe) in the presence of water–anionic surfactant mixtures in the concentration range of 0.0–2.5% w/v SLS has been studied pH-metrically at a temperature of 303 K and at an ionic strength of 0.16 mol L−1. The selection of best fit chemical models is based on statistical parameters and residual analysis. The predominant species detected were ML, ML2, and ML2H2 for Co(II), Ni(II), and Cu(II). The trend in the variation of stability constants with the mole fraction of SLS was explained on the basis of electrostatic and non-electrostatic forces. Distribution of the species with pH at different compositions of SLS–water media was also presented.

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阴离子胶束介质中Co(II)、Ni(II)和Cu(II)与l -苯丙氨酸二元配合物的形成

摘要研究了Co(II)、Ni(II)和Cu(II)与L-苯丙氨酸(Phe)二元配合物在0.02.5% w/v SLS水-阴离子表面活性剂混合物存在下，在温度为303 K、离子强度为0.16 mol L−1的条件下的ph值形成。最佳拟合化学模型的选择是基于统计参数和残差分析。Co(II)、Ni(II)和Cu(II)的优势菌种为ML、ML2和ML2H2。在静电力和非静电力的基础上，解释了稳定常数随SLS摩尔分数的变化趋势。并给出了不同组成的sls -水介质中菌种的pH分布。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Chemical Speciation and Bioavailability 环境科学-毒理学

CiteScore

1.62

自引率

0.00%

发文量

审稿时长

1 months

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