Carboxyl groups of citric acid in the process of complex formation with bivalent and trivalent metal ions in biological systems

Zabiszak, Michał; Nowak, Martyna; Taras-Goślińska, Katarzyna; Kaczmarek, Małgorzata T.; Hnatejko, Zbigniew

doi:10.1016/j.jinorgbio.2018.01.017

Cited by 74 publications

(38 citation statements)

References 60 publications

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“…In our previous studies, the coordination compounds of d-and f-metal ions with citric acid were described. It was found that citric acid complexes have a stoichiometry of metal:ligand 1:1 or 2:2 with three carboxyl groups as a potential coordination center [29]. In the current study in the binary system of tartaric acid with lanthanide(III) ions, complexes of stoichiometry metal:ligand 1:2 were detected (apart from lanthane(III) ions, where complexes with stoichiometry metal:ligand 1:1 were also found).…”

Section: Equilibrium Studymentioning

confidence: 39%

Thermodynamic and Spectroscopic Studies of the Complexes Formed in Tartaric Acid and Lanthanide(III) Ions Binary Systems

et al. 2020

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Binary complexes of tartaric acid with lanthanide(III) ions were investigated. The studies have been performed in aqueous solution using the potentiometric method with computer analysis of the data for detection of the complexes set, determination of the stability constants of these compounds. The mode of the coordination of complexes found was determined using spectroscopy, which shows: Infrared, circular dichroism, ultraviolet, visible as well as luminescence spectroscopy. The overall stability constants of the complexes as well as the equilibrium constants of the reaction were determined. Analysis of the equilibrium constants of the reactions and spectroscopic data allowed the effectiveness of the carboxyl groups in the process of complex formation.

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Section: Equilibrium Studymentioning

confidence: 39%

Thermodynamic and Spectroscopic Studies of the Complexes Formed in Tartaric Acid and Lanthanide(III) Ions Binary Systems

et al. 2020

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“…One report showed that LaH 2 Cit, LaHCit and LaCit were formed in a 1:1 LaCl 3 and citric acid mixture (Barnes and Bristow, 1970). Another study reported that in biological systems, several trivalent lanthanides (La, Nd, Eu, Gd, Tb, Ho and Lu) can form four types of complexes with citric acid in the following manner (Zabiszak et al ., 2018):

{Ln}^{3 +} + HCit ⇆ LnHCit

{Ln}^{3 +} + Cit ⇆ LnCit

LnCit + H_{2} normalO ⇆ LnCit ((), OH)

LnCit ((), OH) + H_{2} normalO ⇆ LnCit {(OH)}_{2}

…”

Section: Discussionmentioning

confidence: 99%

Colonization and bioweathering of monazite by Aspergillus niger: solubilization and precipitation of rare earth elements

Kang

Csetényi

Gadd

2021

Environmental Microbiology

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Geoactive fungi play a significant role in bioweathering of rock and mineral substrates. Monazite is a phosphate mineral containing the rare earth elements (REE) cerium, lanthanum and neodymium. Little is known about geomicrobial transformations of REE-bearing minerals which are also relevant to REE biorecovery from terrestrial and extra-terrestrial reserves. The geoactive soil fungus Aspergillus niger colonized monazite in solid and liquid growth media without any apparent growth inhibition. In a glucoseminerals salts medium, monazite enhanced growth and mycelium extensively covered rock particle surfaces, probably due to the provision of phosphate and essential trace metals. Teeth-like and pagoda-like etching patterns indicated monazite dissolution, with extensive precipitation of secondary oxalate minerals. Biomechanical forces ensued causing aggressive bioweathering effects by tunnelling, penetration and splitting of the ore particles. High amounts of oxalic acid ($46 mM) and moderate amounts of citric acid ($5 mM) were produced in liquid media containing 2% (wt./vol.) monazite, and REE and phosphate were released. Correlation analysis suggested that citric acid was more effective than oxalic acid in REE mobilization, although the higher concentration of oxalic acid also implied complexant activity, as well as the prime role in REE-oxalate precipitation.

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“…Reagent The aqueous chemical speciation of M-EDTA (Z-4)+ complexes were calculated by using HySS (Hyperquad Simulation and Speciation) computer program. The stablity constants from literature were used for calculations 12 . All M n+ cations was mainly formed with EDTA as soluable M-EDTA (Z-4)+ complexes with almost 100% in 0.5 M NaCl solution due to the large stability constantes of M-EDTA (Z-4)+ complexes.…”

Section: Methodsmentioning

confidence: 99%

Study of the diffusion of metals and metals-EDTA complexes in water by capillary method

et al. 2021

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EDTA can complex with radionuclides (RNs) to form negatively charged complexes, making it difficult for clay minerals to retard the diffusion of RNs waste. The diffusion coefficient of RNs in water (Dw) is an important parameter for the safety assessment of the repository. In this study, the effectsof EDTA on the diffusion of metal ions (Cu2+, Sm3+, Nd3+, Lu3+ and Zn2+) were investigated by a capillary method. The experimental results showed that [Cu-EDTA]2-, [Sm-EDTA]-and [La-EDTA]-have higher Dw thanthe Mn+. Whereas, [Nd-EDTA]-and [Zn-EDTA]2- have lower Dw than Nd3+ and Zn2+ cations. The Dw is consistent with the literatures, indicating the validity of the capillary method to determine the diffusion coefficients. According to Stokes-Einstein relation, the ionic radius and ionic potential of the ion are in disproportional to the Dw value. Cu-, Sm-and La-EDTA complexes have smaller molecular size than the uncomplexed metal ions, indicating that the Mn+ ions might be associated with many water molecules to form hydrated ions with larger ionic radius. Whereas the [Nd-EDTA]-and [Zn-EDTA]2- have larger molecular size than Nd3+ and Zn2+ cations.

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Carboxyl groups of citric acid in the process of complex formation with bivalent and trivalent metal ions in biological systems

Cited by 74 publications

References 60 publications

Thermodynamic and Spectroscopic Studies of the Complexes Formed in Tartaric Acid and Lanthanide(III) Ions Binary Systems

Thermodynamic and Spectroscopic Studies of the Complexes Formed in Tartaric Acid and Lanthanide(III) Ions Binary Systems

Colonization and bioweathering of monazite by Aspergillus niger: solubilization and precipitation of rare earth elements

Study of the diffusion of metals and metals-EDTA complexes in water by capillary method

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