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Yang M, Cai X, Wang C, Li P, Chen S, Liu C, Wang Y, Qian K, Dong Q, Xue F, Chu C, Bai J, Liu Q, Ni X. Humidity-Responsive Amorphous Calcium-Magnesium Pyrophosphate/Cassava Starch Scaffold for Enhanced Neurovascular Bone Regeneration. ACS APPLIED MATERIALS & INTERFACES 2024; 16:35964-35984. [PMID: 38968558 DOI: 10.1021/acsami.4c03204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/07/2024]
Abstract
Developing a neurovascular bone repair scaffold with an appropriate mechanical strength remains a challenge. Calcium phosphate (CaP) is similar to human bone, but its scaffolds are inherently brittle and inactive, which require recombination with active ions and polymers for bioactivity and suitable strength. This work discussed the synthesis of amorphous magnesium-calcium pyrophosphate (AMCP) and the subsequent development of a humidity-responsive AMCP/cassava starch (CS) scaffold. The scaffold demonstrated enhanced mechanical properties by strengthening the intermolecular hydrogen bonds and ionic bonds between AMCP and CS during the gelatinization and freeze-thawing processes. The release of active ions was rapid initially and stabilized into a long-term stable release after 3 days, which is well-matched with new bone growth. The release of pyrophosphate ions endowed the scaffold with antibacterial properties. At the cellular level, the released active ions simultaneously promoted the proliferation and mineralization of osteoblasts, the proliferation and migration of endothelial cells, and the proliferation of Schwann cells. At the animal level, the scaffold was demonstrated to promote vascular growth and peripheral nerve regeneration in a rat skull defect experiment, ultimately resulting in the significant and rapid repair of bone defects. The construction of the AMCP/CS scaffold offers practical suggestions and references for neurovascular bone repair.
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Affiliation(s)
- Mengmeng Yang
- School of Materials Science and Engineering, Southeast University, Nanjing 211189, Jiangsu, China
- Jiangsu Key Laboratory for Advanced Metallic Materials, Nanjing 211189, Jiangsu, China
- Institute of Biomedical Devices (Suzhou), Southeast University, Suzhou 215163, China
| | - Xiang Cai
- School of Materials Science and Engineering, Southeast University, Nanjing 211189, Jiangsu, China
- Jiangsu Key Laboratory for Advanced Metallic Materials, Nanjing 211189, Jiangsu, China
| | - Cheng Wang
- School of Materials Science and Engineering, Southeast University, Nanjing 211189, Jiangsu, China
| | - Pengyin Li
- Center of Medical Physics, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, Changzhou 213003, Jiangsu, China
| | - Shaoqing Chen
- Center of Medical Physics, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, Changzhou 213003, Jiangsu, China
| | - Chun Liu
- Center of Medical Physics, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, Changzhou 213003, Jiangsu, China
| | - Yao Wang
- Department of Emergency, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Kun Qian
- School of Materials Science and Engineering, Southeast University, Nanjing 211189, Jiangsu, China
| | - Qiangsheng Dong
- School of Materials Science and Engineering, Nanjing Institute of Technology, Nanjing 211167, China
| | - Feng Xue
- School of Materials Science and Engineering, Southeast University, Nanjing 211189, Jiangsu, China
- Jiangsu Key Laboratory for Advanced Metallic Materials, Nanjing 211189, Jiangsu, China
- Institute of Biomedical Devices (Suzhou), Southeast University, Suzhou 215163, China
| | - Chenglin Chu
- School of Materials Science and Engineering, Southeast University, Nanjing 211189, Jiangsu, China
- Jiangsu Key Laboratory for Advanced Metallic Materials, Nanjing 211189, Jiangsu, China
| | - Jing Bai
- School of Materials Science and Engineering, Southeast University, Nanjing 211189, Jiangsu, China
- Jiangsu Key Laboratory for Advanced Metallic Materials, Nanjing 211189, Jiangsu, China
- Institute of Biomedical Devices (Suzhou), Southeast University, Suzhou 215163, China
- Jiangsu Key Laboratory for Light Metal Alloys, Nanjing 211212, China
| | - Qizhan Liu
- School of Materials Science and Engineering, Southeast University, Nanjing 211189, Jiangsu, China
- Center for Global Health, The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, Jiangsu, China
| | - Xinye Ni
- Center of Medical Physics, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, Changzhou 213003, Jiangsu, China
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Liu Q, Niu X, Zhang D, Ye X, Tan P, Shu T, Lin Z. Phototransformation of phosphite induced by zinc oxide nanoparticles (ZnO NPs) in aquatic environments. WATER RESEARCH 2023; 245:120571. [PMID: 37683523 DOI: 10.1016/j.watres.2023.120571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 08/16/2023] [Accepted: 09/01/2023] [Indexed: 09/10/2023]
Abstract
Phosphite, an essential component in the biogeochemical phosphorus cycle, may make significant contributions to the bioavailable phosphorus pool as well as water eutrophication. However, to date, the potential impacts of coexisting photochemically active substances on the environmental fate and transformation of phosphite in aquatic environments have been sparsely elucidated. In the present study, the effect of zinc oxide nanoparticles (ZnO NPs), a widely distributed photocatalyst in aquatic environments, on phosphite phototransformation under simulated solar irradiation was systematically investigated. The physicochemical characteristics of the pristine and reacted ZnO NPs were thoroughly characterized. The results showed that the presence of ZnO NPs induced the indirect phototransformation of phosphite to phosphate, and the reaction rate increased with increasing ZnO NPs concentration. Through experiments with quenching and trapping free radicals, it was proved that photogenerated reactive oxygen species (ROS), such as hydroxyl radical (•OH), superoxide anion (O2•-), and singlet oxygen (1O2), made substantial contributions to phosphite phototransformation. In addition, the influencing factors such as initial phosphite concentration, pH, water matrixes (Cl-, F-, Br-, SO42-, NO3-, NO2-, HCO3-, humic acid (HA) and citric acid (CA)) were investigated. The component of generated precipitates after the phosphite phototransformation induced by ZnO NPs was still dominated by ZnO NPs, while the presence of amorphous Zn3(PO4)2 was identified. This work explored ZnO NPs-mediated phosphite phototransformation processes, indicating that nanophotocatalysts released into aquatic environments such as ZnO NPs may function as photosensitizers to play a beneficial role in the transformation of phosphite to phosphate, thereby potentially mitigating the toxicity of phosphite to aquatic organisms while exacerbating eutrophication. The findings of this study provide a novel insight into the comprehensive assessment of the environmental fate, potential ecological risk, and biogeochemical behaviors of phosphite in natural aquatic environments under the condition of combined pollution.
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Affiliation(s)
- Qiang Liu
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, PR China; School of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming, 525000, PR China
| | - Xiaojun Niu
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, PR China; School of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming, 525000, PR China; The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou, 510006, PR China.
| | - Dongqing Zhang
- School of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming, 525000, PR China.
| | - Xingyao Ye
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, PR China
| | - Peibing Tan
- School of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming, 525000, PR China
| | - Ting Shu
- School of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming, 525000, PR China
| | - Zhang Lin
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, PR China
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Synergistic use of siderophores and weak organic ligands during zinc transport in the rhizosphere controlled by pH and ion strength gradients. Sci Rep 2022; 12:6774. [PMID: 35474082 PMCID: PMC9042811 DOI: 10.1038/s41598-022-10493-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2021] [Accepted: 04/04/2022] [Indexed: 11/09/2022] Open
Abstract
Citrate (Cit) and Deferoxamine B (DFOB) are two important organic ligands coexisting in soils with distinct different affinities for metal ions. It has been theorized that siderophores and weak organic ligands play a synergistic role during the transport of micronutrients in the rhizosphere, but the geochemical controls of this process remain unknown. Here we test the hypothesis that gradients in pH and ion strength regulate and enable the cooperation. To this end, first we use potentiometric titrations to identify the dominant Zn(II)–Cit and Zn(II)–DFOB complexes and to determine their ionic strength dependent stability constants between 0 and 1 mol dm−3. We parametrise the Extended Debye-Hückel (EDH) equation and determine accurate intrinsic association constants (logβ0) for the formation of the complexes present. The speciation model developed confirms the presence of [Zn(Cit)]−, [Zn(HCit)], [Zn2(Cit)2(OH)2]4−, and [Zn(Cit)2]4−, with [Zn(Cit)]− and [Zn2(Cit)2(OH)2]4− the dominant species in the pH range relevant to rhizosphere. We propose the existence of a new [Zn(Cit)(OH)3]4− complex above pH 10. We also verify the existence of two hexadentate Zn(II)–DFOB species, i.e., [Zn(DFOB)]− and [Zn(HDFOB)], and of one tetradentate species [Zn(H2DFOB)]+. Second, we identify the pH and ionic strength dependent ligand exchange points (LEP) of Zn with citrate and DFOB and the stability windows for Zn(II)–Cit and Zn(II)–DFOB complexes in NaCl and rice soil solutions. We find that the LEPs fall within the pH and ionic strength gradients expected in rhizospheres and that the stability windows for Zn(II)–citrate and Zn(II)–DFOB, i.e., low and high affinity ligands, can be distinctly set off. This suggests that pH and ion strength gradients allow for Zn(II) complexes with citrate and DFOB to dominate in different parts of the rhizosphere and this explains why mixtures of low and high affinity ligands increase leaching of micronutrients in soils. Speciation models of soil solutions using newly determined association constants demonstrate that the presence of dissolved organic matter and inorganic ligands (i.e., bicarbonate, phosphate, sulphate, or chlorides) do neither affect the position of the LEP nor the width of the stability windows significantly. In conclusion, we demonstrate that cooperative and synergistic ligand interaction between low and high affinity ligands is a valid mechanism for controlling zinc transport in the rhizosphere and possibly in other environmental reservoirs such as in the phycosphere. Multiple production of weak and strong ligands is therefore a valid strategy of plants and other soil organisms to improve access to micronutrients.
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Gigliuto A, Cigala RM, Irto A, Felice MR, Pettignano A, Milea D, Materazzi S, De Stefano C, Crea F. The Solution Behavior of Dopamine in the Presence of Mono and Divalent Cations: A Thermodynamic Investigation in Different Experimental Conditions. Biomolecules 2021; 11:biom11091312. [PMID: 34572525 PMCID: PMC8466117 DOI: 10.3390/biom11091312] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 09/01/2021] [Accepted: 09/02/2021] [Indexed: 12/07/2022] Open
Abstract
The interactions of dopamine [2-(3,4-Dihydroxyphenyl)ethylamine, (Dop−)] with methylmercury(II) (CH3Hg+), magnesium(II), calcium(II), and tin(II) were studied in NaCl(aq) at different ionic strengths and temperatures. Different speciation models were obtained, mainly characterized by mononuclear species. Only for Sn2+ we observed the formation of binuclear complexes (M2L2 and M2LOH (charge omitted for simplicity); M = Sn2+, L = Dop−). For CH3Hg+, the speciation model reported the ternary MLCl (M = CH3Hg+) complex. The dependence on the ionic strength of complex formation constants was modeled by using both an extended Debye–Hückel equation that included the Van’t Hoff term for the calculation of enthalpy change values of the formation and the Specific Ion Interaction Theory (SIT). The results highlighted that, in general, the entropy is the driving force of the process. The sequestering ability of dopamine towards the investigated cations was evaluated using the calculation of pL0.5 parameter. The sequestering ability trend resulted to be: Sn2+ > CH3Hg+ > Ca2+ > Mg2+. For example, at I = 0.15 mol dm−3, T = 298.15 K and pH = 7.4, pL0.5 = 3.46, 2.63, 1.15, and 2.27 for Sn2+, CH3Hg+, Ca2+ and Mg2+ (pH = 9.5 for Mg2+), respectively. For the Ca2+/Dop− system, the precipitates collected at the end of the potentiometric titrations were analyzed by thermogravimetry (TGA). The thermogravimetric calculations highlighted the formation of solid with stoichiometry dependent on the different metal:ligand ratios and concentrations of the starting solutions.
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Affiliation(s)
- Antonio Gigliuto
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, Università degli Studi di Messina, V.le F. Stagno d’Alcontres, 31, I-98166 Messina, Italy; (A.G.); (R.M.C.); (A.I.); (M.R.F.); (D.M.); (C.D.S.)
| | - Rosalia Maria Cigala
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, Università degli Studi di Messina, V.le F. Stagno d’Alcontres, 31, I-98166 Messina, Italy; (A.G.); (R.M.C.); (A.I.); (M.R.F.); (D.M.); (C.D.S.)
| | - Anna Irto
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, Università degli Studi di Messina, V.le F. Stagno d’Alcontres, 31, I-98166 Messina, Italy; (A.G.); (R.M.C.); (A.I.); (M.R.F.); (D.M.); (C.D.S.)
| | - Maria Rosa Felice
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, Università degli Studi di Messina, V.le F. Stagno d’Alcontres, 31, I-98166 Messina, Italy; (A.G.); (R.M.C.); (A.I.); (M.R.F.); (D.M.); (C.D.S.)
| | - Alberto Pettignano
- Dipartimento di Fisica e Chimica, Università degli Studi di Palermo, V.le delle Scienze, ed. 17, I-90128 Palermo, Italy;
| | - Demetrio Milea
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, Università degli Studi di Messina, V.le F. Stagno d’Alcontres, 31, I-98166 Messina, Italy; (A.G.); (R.M.C.); (A.I.); (M.R.F.); (D.M.); (C.D.S.)
| | - Stefano Materazzi
- Dipartimento di Chimica, Università “La Sapienza” di Roma, Piazzale A. Moro 5, I-00185 Rome, Italy;
| | - Concetta De Stefano
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, Università degli Studi di Messina, V.le F. Stagno d’Alcontres, 31, I-98166 Messina, Italy; (A.G.); (R.M.C.); (A.I.); (M.R.F.); (D.M.); (C.D.S.)
| | - Francesco Crea
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, Università degli Studi di Messina, V.le F. Stagno d’Alcontres, 31, I-98166 Messina, Italy; (A.G.); (R.M.C.); (A.I.); (M.R.F.); (D.M.); (C.D.S.)
- Correspondence: ; Tel.: +39-0906765761
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Effect of salinity on the zinc(II) binding efficiency of siderophore functional groups and implications for salinity tolerance mechanisms in barley. Sci Rep 2021; 11:16704. [PMID: 34408172 PMCID: PMC8373983 DOI: 10.1038/s41598-021-95736-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Accepted: 07/23/2021] [Indexed: 12/02/2022] Open
Abstract
Bacteria, fungi and grasses use siderophores to access micronutrients. Hence, the metal binding efficiency of siderophores is directly related to ecosystem productivity. Salinization of natural solutions, linked to climate change induced sea level rise and changing precipitation patterns, is a serious ecological threat. In this study, we investigate the impact of salinization on the zinc(II) binding efficiency of the major siderophore functional groups, namely the catecholate (for bacterial siderophores), α-hydroxycarboxylate (for plant siderophores; phytosiderophores) and hydroxamate (for fungal siderophores) bidentate motifs. Our analysis suggests that the order of increasing susceptibility of siderophore classes to salinity in terms of their zinc(II) chelating ability is: hydroxamate < catecholate < α-hydroxycarboxylate. Based on this ordering, we predict that plant productivity is more sensitive to salinization than either bacterial or fungal productivity. Finally, we show that previously observed increases in phytosiderophore release by barley plants grown under salt stress in a medium without initial micronutrient deficiencies, are in line with the reduced zinc(II) binding efficiency of the α-hydroxycarboxylate ligand and hence important for the salinity tolerance of whole-plant zinc(II) status.
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Northover GHR, Garcia-España E, Weiss DJ. Unravelling the modus operandi of phytosiderophores during zinc uptake in rice: the importance of geochemical gradients and accurate stability constants. JOURNAL OF EXPERIMENTAL BOTANY 2021; 72:1517-1526. [PMID: 33332561 DOI: 10.1093/jxb/eraa580] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Accepted: 12/10/2020] [Indexed: 06/12/2023]
Abstract
Micronutrient deficiencies threaten global food production. Attempts to biofortify crops rely on a clear understanding of micronutrient uptake processes. Zinc deficiency in rice is a serious problem. One of the pathways proposed for the transfer of zinc from soils into rice plants involves deoxymugineic acid (DMA), a phytosiderophore. The idea that phytosiderophores play a wider role in nutrition of Poaceae beyond iron is well established. However, key mechanistic details of the DMA-assisted zinc uptake pathway in rice remain uncertain. In particular, questions surround the form in which zinc from DMA is taken up [i.e. as free aqueous Zn(II) or as Zn(II)-DMA complexes] and the role of competitive behaviour of other metals with DMA. We propose that an accurate description of the effect of changes in pH, ligand concentration, and ionic strength on the stability of Zn(II)-DMA complexes in the presence of other metals in the microenvironment around root cells is critical for understanding the modus operandi of DMA during zinc uptake. To that end, we reveal the importance of geochemical changes in the microenvironment around root cells and demonstrate the effect of inaccurate stability constants on speciation models.
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Affiliation(s)
- George H R Northover
- Department of Earth Science and Engineering, Imperial College London, London, UK
| | | | - Dominik J Weiss
- Department of Earth Science and Engineering, Imperial College London, London, UK
- Department of Civil and Environmental Engineering, Princeton University, Princeton, NJ, USA
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Bretti C, Cardiano P, Irto A, Lando G, Milea D, Sammartano S. Interaction of N-acetyl-l-cysteine with Na +, Ca 2+, Mg 2+ and Zn 2+. Thermodynamic aspects, chemical speciation and sequestering ability in natural fluids. J Mol Liq 2020; 319:114164. [PMID: 32904480 PMCID: PMC7455796 DOI: 10.1016/j.molliq.2020.114164] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 07/23/2020] [Accepted: 08/27/2020] [Indexed: 11/24/2022]
Abstract
The estimation of thermodynamic parameters of N-Acetyl-L-cysteine (NAC) protonation were determined in NaCl(aq), (CH3)4NCl(aq), (C2H5)4NI(aq), employing various temperature and ionic strengths conditions, by potentiometric measurements. The interaction of NAC with some essential metal cations (e.g., Ca2+, Mg2+ and Zn2+) was investigated as well at 298.15 K in NaCl(aq) in the ionic strength range 0.1 ≤ I/mol dm-3 ≤ 1.0. The values of protonation constants at infinite dilution and at T = 298.15 K are: log K 1 H = 9.962 ± 0.005 (S-H) and log K 2 H = 3.347 ± 0.008 (COO-H). In the presence of a background electrolyte, both log K 1 H and log K 2 H values followed the trend (C2H5)4NI ≥ (CH3)4NCl ≥ NaCl. The differences in the values of protonation constants among the three ionic media were interpreted in terms of variation of activity coefficients and formation of weak complexes. Accordingly, the determination of the stability of 4 species, namely: NaL-, NaHL0 (aq), (CH3)4NL-, (CH3)4NHL0 (aq) was assessed. In addition, as regards the interactions of Mg2+, Ca2+ and Zn2+ with NAC, the main species where the ML0 (aq), ML(OH)-, and ML2 2-, that were found to be important in the chemical speciation of NAC in real multicomponent solutions. The whole set of the data collected may be crucial for the development of NAC-based materials for natural fluids selective decontamination from heavy metals.
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Affiliation(s)
- Clemente Bretti
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, Università di Messina, Viale Ferdinando Stagno d'Alcontres 31, 98166 Messina, Italy
| | - Paola Cardiano
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, Università di Messina, Viale Ferdinando Stagno d'Alcontres 31, 98166 Messina, Italy
| | - Anna Irto
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, Università di Messina, Viale Ferdinando Stagno d'Alcontres 31, 98166 Messina, Italy
| | - Gabriele Lando
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, Università di Messina, Viale Ferdinando Stagno d'Alcontres 31, 98166 Messina, Italy
| | - Demetrio Milea
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, Università di Messina, Viale Ferdinando Stagno d'Alcontres 31, 98166 Messina, Italy
| | - Silvio Sammartano
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, Università di Messina, Viale Ferdinando Stagno d'Alcontres 31, 98166 Messina, Italy
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Bretti C, Cardiano P, Cigala RM, De Stefano C, Irto A, Lando G, Sammartano S. Exploring various ligand classes for the efficient sequestration of stannous cations in the environment. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 643:704-714. [PMID: 29957435 DOI: 10.1016/j.scitotenv.2018.06.241] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Revised: 06/11/2018] [Accepted: 06/19/2018] [Indexed: 06/08/2023]
Abstract
Metal pollution, coming from both natural and anthropogenic sources, has become one of the most serious environmental problems. Various strategies have been tested with the aim of removing heavy metals from environment. In this contribution, containing a robust experimental work together with a critical literature analysis, the sequestering ability of a variety of ligands towards Sn2+ cation will be evaluated in the conditions of several natural fluids, i.e. sea water, fresh water, human blood plasma, urine and saliva. 13 structural and 11 thermodynamic descriptors will be selected for a total of thirty-eight molecules belonging to different classes (carboxylic acids, amines, amino acids, phosphonates, polyelectrolytes etc. …). For the filling of those missing data relative to the 11 thermodynamic descriptors, different strategies will be adopted, including simple correlations and Nipals algorithm. The evaluation of the sequestering ability of the ligands is assessed in terms of estimation of pL0.5 (total concentration of ligand required to bind the 50% of metal in solution), an empirical parameter that takes into account all the side reactions in solutions and does not depend on the speciation scheme. Partial least square calculations were performed to model the pL0.5 and to determine its correlation with the abovementioned descriptors. The possibility to design and build up new tailor-made molecules capable of effectively sequester Sn2+ in various conditions is crucial for practical applications in biosphere, hydrosphere and lithosphere.
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Affiliation(s)
- Clemente Bretti
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, Università di Messina, Viale F. Stagno d'Alcontres, 31, I-98166, Messina, Italy
| | - Paola Cardiano
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, Università di Messina, Viale F. Stagno d'Alcontres, 31, I-98166, Messina, Italy
| | - Rosalia Maria Cigala
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, Università di Messina, Viale F. Stagno d'Alcontres, 31, I-98166, Messina, Italy
| | - Concetta De Stefano
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, Università di Messina, Viale F. Stagno d'Alcontres, 31, I-98166, Messina, Italy
| | - Anna Irto
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, Università di Messina, Viale F. Stagno d'Alcontres, 31, I-98166, Messina, Italy
| | - Gabriele Lando
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, Università di Messina, Viale F. Stagno d'Alcontres, 31, I-98166, Messina, Italy.
| | - Silvio Sammartano
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, Università di Messina, Viale F. Stagno d'Alcontres, 31, I-98166, Messina, Italy
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9
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Cardiano P, Cigala RM, Crea F, Giacobello F, Giuffrè O, Irto A, Lando G, Sammartano S. Sequestration of Aluminium(III) by different natural and synthetic organic and inorganic ligands in aqueous solution. CHEMOSPHERE 2017; 186:535-545. [PMID: 28806680 DOI: 10.1016/j.chemosphere.2017.08.015] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2017] [Revised: 07/11/2017] [Accepted: 08/04/2017] [Indexed: 06/07/2023]
Abstract
The speciation of Al3+ in aqueous solutions containing organic and inorganic ligands important from a biological (citrate (Cit3-), gluconate (Gluc-), lactate (Lac-), silicate (H2SiO42-), carbonate (CO32-), fluoride (F-)) and industrial (Gantrez®; polymethyl-vinyl-ether-co-maleic acids; GTZ S95 and GTZ AN169) point of view is reported. The stability constants of Al3+/Lz- complexes (Lz- = ligand with z- charge) were determined by potentiometry at T = 298.15 K and 0.10 ≤ I/M ≤ 1.00 in NaCl(aq) (in NaNO3(aq) only for Al3+/GTZ S95 and Al3+/Gluc- acid systems). For Al3+/Cit3-, Al3+/Lac- and Al3+/GTZ AN1694- systems, the investigations were also carried out at 283.15 ≤ T/K ≤ 318.15. The dependence of the thermodynamic parameters on ionic strength and temperature was modelled with a Debye-Hückel type equation. Different speciation schemes of Al3+/Lz- systems were obtained, including protonated, simple metal-ligand, polynuclear and hydrolytic mixed species. At I → 0 M and T = 298.15 K the stability trend for the AlL(3-z) species is: 14.28 ± 0.02, 13.99 ± 0.03, 10.16 ± 0.03, 3.16 ± 0.08, 2.84 ± 0.10 for GTZ S95, GTZ AN169, Cit3-, Gluc- and Lac-, respectively. From the investigations at different temperatures, it results that the entropic contribution is the driving force of the reactions. The sequestering ability of the ligands towards Al3+ was investigated determining the pL0.5 parameter at different experimental conditions, finding the following trend: Cit3- » Gluc- > GTZ S954- > GTZ AN1694- > Lac- for the organic ligands, and pL0.5: F- » CO32- > H2SiO42- for the inorganic ones.
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Affiliation(s)
- Paola Cardiano
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, Università di Messina, Viale F. Stagno d'Alcontres, 31, I-98166 Messina, Vill. S. Agata, Italy
| | - Rosalia Maria Cigala
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, Università di Messina, Viale F. Stagno d'Alcontres, 31, I-98166 Messina, Vill. S. Agata, Italy
| | - Francesco Crea
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, Università di Messina, Viale F. Stagno d'Alcontres, 31, I-98166 Messina, Vill. S. Agata, Italy
| | - Fausta Giacobello
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, Università di Messina, Viale F. Stagno d'Alcontres, 31, I-98166 Messina, Vill. S. Agata, Italy
| | - Ottavia Giuffrè
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, Università di Messina, Viale F. Stagno d'Alcontres, 31, I-98166 Messina, Vill. S. Agata, Italy
| | - Anna Irto
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, Università di Messina, Viale F. Stagno d'Alcontres, 31, I-98166 Messina, Vill. S. Agata, Italy
| | - Gabriele Lando
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, Università di Messina, Viale F. Stagno d'Alcontres, 31, I-98166 Messina, Vill. S. Agata, Italy
| | - Silvio Sammartano
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, Università di Messina, Viale F. Stagno d'Alcontres, 31, I-98166 Messina, Vill. S. Agata, Italy.
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Bretti C, Cigala RM, De Stefano C, Lando G, Sammartano S. Understanding the bioavailability and sequestration of different metal cations in the presence of a biodegradable chelant MGDA in biological fluids and natural waters. CHEMOSPHERE 2017; 183:107-118. [PMID: 28538167 DOI: 10.1016/j.chemosphere.2017.05.099] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Revised: 04/11/2017] [Accepted: 05/16/2017] [Indexed: 06/07/2023]
Abstract
Thermodynamic information about the metal-ligand interaction between Fe3+, Zn2+, Cu2+ and Sn2+, and a biodegradable ligand as MGDA is reported. The speciation scheme was obtained by means of potentiometric measurements and isothermal titration calorimetry (to determine enthalpy changes) in NaCl medium. The formation of the ML and MLOH species was evidenced for all the metal cations, and for Fe3+ also the ML2 and ML(OH)2 were found. The relative stability, for the ML species, follows the order: Sn2+ > Fe3+ > Cu2+ > Zn2+. Stability constants and enthalpy changes were obtained at different ionic strengths, and data were modeled using the Debye-Hückel and SIT approaches to obtain data in a standard state. At infinite dilution, the enthalpy changes are largely negative for Cu2+ (-34.1 kJ mol-1) and Sn2+ (-16.6 kJ mol-1), slightly negative for Fe3+ (-3.3 kJ mol-1) and positive for Zn2+ (8.7 kJ mol-1). In all cases, the entropic contribution to the stability is predominant. The sequestering ability of MGDA was evaluated determining the pL0.5 values in different conditions. Comparing the data reported in this work and literature ones, some empirical relationships were obtained with predictive purpose. For example, using 11 data in the test set we have: log K (M/MGDA) ± 0.1 = 1.13 + 0.84·log K (M/NTA) Case studies were built up in the conditions of seawater, fresh water and urine to study the possible use of MGDA towards the metal cations here studied. Some considerations were also done in the light of the ocean acidification.
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Affiliation(s)
- Clemente Bretti
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, Università degli Studi di Messina, Viale Ferdinando Stagno d'Alcontres, 31, I-98166 Messina (Vill. S. Agata), Italy.
| | - Rosalia Maria Cigala
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, Università degli Studi di Messina, Viale Ferdinando Stagno d'Alcontres, 31, I-98166 Messina (Vill. S. Agata), Italy.
| | - Concetta De Stefano
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, Università degli Studi di Messina, Viale Ferdinando Stagno d'Alcontres, 31, I-98166 Messina (Vill. S. Agata), Italy.
| | - Gabriele Lando
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, Università degli Studi di Messina, Viale Ferdinando Stagno d'Alcontres, 31, I-98166 Messina (Vill. S. Agata), Italy.
| | - Silvio Sammartano
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, Università degli Studi di Messina, Viale Ferdinando Stagno d'Alcontres, 31, I-98166 Messina (Vill. S. Agata), Italy.
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Cardiano P, Cigala RM, Cordaro M, De Stefano C, Milea D, Sammartano S. On the complexation of metal cations with “pure” diethylenetriamine-N,N,N′,N′′,N′′-pentakis(methylenephosphonic) acid. NEW J CHEM 2017. [DOI: 10.1039/c7nj00118e] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Complexation of various metal cations by DTPMA obtained by an efficient synthetic procedure has been investigated, assessing its sequestering ability and speciation in real systems.
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Affiliation(s)
- Paola Cardiano
- Dipartimento di Scienze Chimiche
- Biologiche
- Farmaceutiche ed Ambientali
- Università di Messina
- 98166 Messina
| | - Rosalia Maria Cigala
- Dipartimento di Scienze Chimiche
- Biologiche
- Farmaceutiche ed Ambientali
- Università di Messina
- 98166 Messina
| | - Massimiliano Cordaro
- Dipartimento di Scienze Chimiche
- Biologiche
- Farmaceutiche ed Ambientali
- Università di Messina
- 98166 Messina
| | - Concetta De Stefano
- Dipartimento di Scienze Chimiche
- Biologiche
- Farmaceutiche ed Ambientali
- Università di Messina
- 98166 Messina
| | - Demetrio Milea
- Dipartimento di Scienze Chimiche
- Biologiche
- Farmaceutiche ed Ambientali
- Università di Messina
- 98166 Messina
| | - Silvio Sammartano
- Dipartimento di Scienze Chimiche
- Biologiche
- Farmaceutiche ed Ambientali
- Università di Messina
- 98166 Messina
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Bretti C, Cigala RM, De Stefano C, Lando G, Sammartano S. Understanding the bioavailability and sequestration of different metal cations in the presence of a biodegradable chelant S,S-EDDS in biological fluids and natural waters. CHEMOSPHERE 2016; 150:341-356. [PMID: 26921587 DOI: 10.1016/j.chemosphere.2016.02.023] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Revised: 02/01/2016] [Accepted: 02/05/2016] [Indexed: 06/05/2023]
Abstract
Ethylenediamine-N,N'-disuccinic acid is a biodegradable alternative to EDTA, therefore its use for the sequestration of Ca(2+), Sn(2+), Cu(2+), Zn(2+) and Fe(3+) is analyzed. New data on its binding ability towards these cations were obtained with potentiometric, voltammetric and calorimetric measurements at different ionic strengths and at T = 298.15 K. Real multi-component fluids, namely fresh water, urine, sea water, saliva and blood plasma were chosen as case studies to evaluate the sequestering ability of EDDS in comparison with EDTA. Speciation diagrams were drawn in selected conditions, considering all interactions among the "natural" components of the fluid and those studied in this work, EDDS and EDTA (cL = 1 mmol dm(-3)) as sequestering agents and the cited metal cations (cM ∼ 10(-5) mol dm(-3)). The comparison of the sequestering ability of EDDS and EDTA is done using pM and pL0.5. In blood plasma the plasma mobilizing index was adopted. It was found that EDDS is a good alternative to EDTA, which tends to bind Ca(2+) and Mg(2+) more than EDDS. In particular, EDTA cannot be used as a sequestrant for Sn(2+) when cCa > cEDTA. EDDS is more efficient than EDTA at pH < 8, particularly in urine, where carbonate is absent. In sea water, the sequestering ability of EDDS towards Fe(3+) is higher than that of EDTA. In blood plasma, the PMI of EDDS towards Cu(2+) is higher than that of EDTA. Thermodynamic information, in terms of ΔH and ΔS, for the protonation and metal complex formation reactions are reported.
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Affiliation(s)
- Clemente Bretti
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, Università degli Studi di Messina, Viale Ferdinando Stagno d'Alcontres, 31, I-98166 Messina, Vill. S. Agata, Italy.
| | - Rosalia Maria Cigala
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, Università degli Studi di Messina, Viale Ferdinando Stagno d'Alcontres, 31, I-98166 Messina, Vill. S. Agata, Italy.
| | - Concetta De Stefano
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, Università degli Studi di Messina, Viale Ferdinando Stagno d'Alcontres, 31, I-98166 Messina, Vill. S. Agata, Italy.
| | - Gabriele Lando
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, Università degli Studi di Messina, Viale Ferdinando Stagno d'Alcontres, 31, I-98166 Messina, Vill. S. Agata, Italy.
| | - Silvio Sammartano
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, Università degli Studi di Messina, Viale Ferdinando Stagno d'Alcontres, 31, I-98166 Messina, Vill. S. Agata, Italy.
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Bretti C, Cigala RM, Crea F, De Stefano C, Lando G, Sammartano S. Thermodynamics of Zn2+ 2-mercaptopyridine-N-oxide and 2-hydroxypyridine-N-oxide interactions: Stability, solubility, activity coefficients and medium effects. J Mol Liq 2015. [DOI: 10.1016/j.molliq.2015.08.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Shoukry AA, Al-Mhayawi SR. Solution Equilibria of Binary and Ternary Complexes Involving Zinc(II) with 2,6-Diaminopyridine and Various Biologically Relevant Ligands. J SOLUTION CHEM 2015. [DOI: 10.1007/s10953-015-0395-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Cigala RM, Crea F, De Stefano C, Foti C, Milea D, Sammartano S. Zinc(II) complexes with hydroxocarboxylates and mixed metal species with tin(II) in different salts aqueous solutions at different ionic strengths: formation, stability, and weak interactions with supporting electrolytes. MONATSHEFTE FUR CHEMIE 2015. [DOI: 10.1007/s00706-014-1394-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Cucinotta D, De Stefano C, Giuffrè O, Lando G, Milea D, Sammartano S. Formation, stability and empirical relationships for the binding of Sn2+ by O-, N- and S-donor ligands. J Mol Liq 2014. [DOI: 10.1016/j.molliq.2014.10.037] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Stabilities of the Divalent Metal Ion Complexes of a Short-Chain Polyphosphate Anion and Its Imino Derivative. J SOLUTION CHEM 2013; 42:2104-2118. [PMID: 24319300 PMCID: PMC3843374 DOI: 10.1007/s10953-013-0099-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2012] [Accepted: 06/28/2013] [Indexed: 12/01/2022]
Abstract
Abstract The stability constants of ML-type complexes of the two linear triphosphate ligand anion analogues triphosphate (\documentclass[12pt]{minimal}
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\begin{document}$$ {\text{P}}_{ 3} {\text{O}}_{10}^{5 - } $$\end{document}P3O105-) and diimidotriphosphate (\documentclass[12pt]{minimal}
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\begin{document}$$ {\text{P}}_{ 3} {\text{O}}_{ 8} ( {\text{NH}})_{2}^{5 - } $$\end{document}P3O8(NH)25-) were investigated thermodynamically using potentiometric titrations according to Schwarzenbach’s procedure. The stability constants of the ML-type complexes of different divalent metal ions with \documentclass[12pt]{minimal}
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\begin{document}$$ {\text{P}}_{ 3} {\text{O}}_{ 8} ( {\text{NH}})_{2}^{5 - } $$\end{document}P3O8(NH)25- are larger than those of the corresponding complexes with \documentclass[12pt]{minimal}
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\begin{document}$$ {\text{P}}_{ 3} {\text{O}}_{10}^{5 - } $$\end{document}P3O105- because of the greater basicity of the imino group. The order of the stability constants for the ML-type complexes follows the Irving–Williams order, indicating that only non-bridging oxygen atoms are coordinated directly to the different metal ions in both ligands, and that the imino groups cannot participate in coordination to the metal ions. In the complexation reactions of the Ca2+, Sr2+, Ba2+–\documentclass[12pt]{minimal}
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\begin{document}$$ {\text{P}}_{ 3} {\text{O}}_{10}^{5 - } $$\end{document}P3O105- and Cu2+, Zn2+, Ni2+–\documentclass[12pt]{minimal}
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\begin{document}$$ {\text{P}}_{ 3} {\text{O}}_{ 8} ( {\text{NH}})_{2}^{5 - } $$\end{document}P3O8(NH)25- systems, each metal ion forms an enthalpically stable complex, and there was no suggestion of a conspicuous entropic effect based on the chelate effect. Monodentate complexes that are strongly coordinated with the ligands were therefore formed, whereas entropically stable bidentate complexes were formed in the complexation reactions of the Cu2+, Zn2+, Ni2+–\documentclass[12pt]{minimal}
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\begin{document}$$ {\text{P}}_{ 3} {\text{O}}_{10}^{5 - } $$\end{document}P3O105- and Ca2+, Ba2+, Sr2+–\documentclass[12pt]{minimal}
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\begin{document}$$ {\text{P}}_{ 3} {\text{O}}_{ 8} ( {\text{NH}})_{2}^{5 - } $$\end{document}P3O8(NH)25- systems. According to the HSAB concept, hard metal cations such as Ca2+, Ba2+ and Sr2+ should bind to the harder oxygen atoms rather than the softer nitrogen atoms of the imidopolyphosphate anions, preventing direct coordination to the imino nitrogen atom. Graphical Abstract ![]()
Electronic supplementary material The online version of this article (doi:10.1007/s10953-013-0099-2) contains supplementary material, which is available to authorized users.
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Speciation of tin(II) in aqueous solution: thermodynamic and spectroscopic study of simple and mixed hydroxocarboxylate complexes. MONATSHEFTE FUR CHEMIE 2013. [DOI: 10.1007/s00706-013-0961-3] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Crea F, De Stefano C, Manfredi G, Sammartano S. Thermodynamic study of the non covalent interactions of phytate with xanthine derivatives and histamine in aqueous solution. J Mol Liq 2013. [DOI: 10.1016/j.molliq.2012.10.043] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Critical evaluation of stability constants for nucleotide complexes with protons and metal ions and the accompanying enthalpy changes. PURE APPL CHEM 1991. [DOI: 10.1351/pac199163071015] [Citation(s) in RCA: 138] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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