Effect of non ionic micelles on the chemical speciation of binary complexes of Pb(II), Cd(II) and Hg(II) with L-phenylalanine

Ramanaiah, Malla; Sri, S. Goutham; Sailaja, B. B. V.

doi:10.3184/095422913x13842645604336

Cited by 10 publications

(7 citation statements)

References 16 publications

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“…The initial concentrations of reactants are given in Table 1. The details of experimental procedure and titration assembly have been detailed elsewhere [11][12][13][14]. www.videleaf.com…”

Section: Instrumentation and Analytical Proceduresmentioning

confidence: 99%

Effect of Anionic Micelles of Sodium Dodecyl Sulfate on Protonation Equilibria of Salicylic Acid Derivatives

Ramanaiah¹,

Gouthamsri²,

Balakrishna³

et al. 2020

Prime Archives in Chemistry

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The impact of sodium dodecyl sulfate (SDS) on the protonation equilibria of 5-sulfosalicylic acid and 5-Hydroxysalicylic acid has been studied in various concentrations (0.0−2.5% w/v) of sodium dodecyl sulfate solution maintaining an ionic strength of 0.16 mol dm −3 Nacl at 303 K. The protonation constants have been calculated with the computer program MINIQUAD75 and the best fit models are arrived at based on statistical grounds employing crystallographic R factor, χ 2 , skewness, and kurtosis. These protonation constants values have been found to shift in micellar media as compared to those in pure water. The differences in the values have been attributed to the solvent properties of the interfacial and bulk phases involving contribution from the micellar surface potential in the case of charged micelles. The trend of log values of stepwise protonation constants with mole fraction of the medium have been explained based on electrostatic and non-electrostatic forces operating on the protonation equilibria. Distributions of species, protonation equilibria, and effect of influential parameters on the protonation constants have also been presented.

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“…The initial concentrations of reactants are given in Table 1. The details of experimental procedure and titration assembly have been detailed elsewhere [11][12][13][14]. www.videleaf.com…”

Section: Instrumentation and Analytical Proceduresmentioning

confidence: 99%

Effect of Anionic Micelles of Sodium Dodecyl Sulfate on Protonation Equilibria of Salicylic Acid Derivatives

Ramanaiah¹,

Gouthamsri²,

Balakrishna³

et al. 2020

Prime Archives in Chemistry

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“…[5] Hence, the chemical speciation of ligands with metal ions has been studied in this laboratory. [6][7][8][9][10] Maleic acid is a dicarboxylic acid. It is the cis isomer of butenedioic acid, whereas fumaric acid is the trans isomer.…”

Section: Introductionmentioning

confidence: 99%

Computer-augmented modeling studies of Pb(II) and Cd(II) complexes with maleic acid in ethylene glycol–water mixture

Rao

Srinu

Kumari

et al. 2016

Chemical Speciation & Bioavailability

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Chemical speciation of binary complexes of Pb(II) and Cd(II) ions with maleic acid have been studied pH metrically in the concentration range of 0-50% v/v ethylene glycol (EG)-water mixtures maintaining an ionic strength of 0.16 molL −1 at 303 K. Alkalimetric titrations were carried out in different relative concentrations of metal and maleic acid. Stability constants of various models of binary complexes were refined with MINIQUAD75. The best-fit chemical models were selected based on statistical parameters and residual analysis. The species detected are ML 2 , ML 3 , and ML 2 H for Pb(II) and Cd(II). The chemical speciation, metal bioavailability, and transportation are explained based on the distribution diagrams.

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“…These simultaneous equilibria involving a variety of metal ions and ligands are important in biological fluids [1]. Hence, the chemical speciation of ligands with metal ions becomes of paramount importance in our laboratory [2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Speciation of binary complexes of Pb(II) and Cd(II) with L-asparagine in dimethyl sulfoxide - water mixtures

Rao¹,

Ramanaiah²,

Sailaja³

2016

Bull. Chem. Soc. Eth.

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Chemical speciation of L-Asparagine complexes of Pb(II) and Cd(II) in presence of (0-50% v/v) dimethyl sulfoxide(DMSO)-water mixtures has been studied potentiometrically at 303.0 K and at an ionic strength of 0.16 mol L-1. The models containing different number of species were refined by using the computer program MINIQUAD75. The number of species in the models is chosen based on exhaustive modeling. The predominant species formed are of the type ML2, ML2H, and ML2H2. The best fit chemical models were chosen based on statistical parameters. The convenience of the models is ascertained by studying the effect of errors in concentrations of ingredients. The trend in variation of stability constants with change in the composition of medium is explained on the basis of predominant electrostatic and non-electrostatic forces. Chemical speciation was discussed based on the distribution diagrams.

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Effect of non ionic micelles on the chemical speciation of binary complexes of Pb(II), Cd(II) and Hg(II) with L-phenylalanine

Cited by 10 publications

References 16 publications

Effect of Anionic Micelles of Sodium Dodecyl Sulfate on Protonation Equilibria of Salicylic Acid Derivatives

Effect of Anionic Micelles of Sodium Dodecyl Sulfate on Protonation Equilibria of Salicylic Acid Derivatives

Computer-augmented modeling studies of Pb(II) and Cd(II) complexes with maleic acid in ethylene glycol–water mixture

Speciation of binary complexes of Pb(II) and Cd(II) with L-asparagine in dimethyl sulfoxide - water mixtures

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