Neeraja Robbi, Hima Bindu Gandham
Department of Engineering Chemistry, AUCE (A), Andhra University, Visakhapatnam, 530003, Andhra Pradesh, India.
Department of Chemistry, Govt. Degree College (Men), Srikakulam, 532001, Andhra Pradesh, India.
Heliyon. 2021 Apr 11;7(4):e06729. doi: 10.1016/j.heliyon.2021.e06729. eCollection 2021 Apr.
The present work aims to evaluate the binding capacities of binary complexes of L-Methionine with transition metal ions Co, Ni and Cu in Triton X 100-water mixtures, a non-ionic micellar media of different compositions (0.0-2.5% (v/v)), investigated under the experimental conditions of 0.16 mol/dm ionic strength using NaNO at a temperature of 303.0 ± 0.1 K Potentiometrically. The potentiometric data was assessed by Irving-Rossotti pH metric technique with the least-squares method of MINIQUAD75, a computer program. The selectivity of the best fit model obtained by continuous exhaustive chemical modelling studies and the accuracy of the results is assessed based on statistical parameters. MLH, ML and ML are the identified species for the three M(Co, Ni and Cu) - Met systems. The shift in the equilibrium of binary metal-methionine complexes with variation in composition (0.0-2.5%) of the solvent can be explained by electrostatic together with non-electrostatic forces contributed by the interaction of solute with solvent.
本研究旨在评估L-蛋氨酸与过渡金属离子钴、镍和铜在Triton X 100-水混合物（一种不同组成（0.0 - 2.5%（v/v））的非离子胶束介质）中的二元配合物的结合能力，在离子强度为0.16 mol/dm³、使用NaNO₃、温度为303.0 ± 0.1 K的实验条件下通过电位滴定法进行研究。电位滴定数据采用Irving-Rossotti pH测定技术和MINIQUAD75计算机程序的最小二乘法进行评估。通过连续详尽的化学建模研究获得的最佳拟合模型的选择性以及结果的准确性基于统计参数进行评估。MLH、ML和ML₂是三种M（钴、镍和铜）-蛋氨酸体系中确定的物种。二元金属-蛋氨酸配合物的平衡随溶剂组成（0.0 - 2.5%）变化的移动可以通过溶质与溶剂相互作用产生的静电力和非静电力来解释。
