1
|
Barly SHQ, Okhrimenko DV, Solvang M, Yue Y, Stipp SLS. Dissolution of Stone Wool Fibers with Phenol-urea-formaldehyde Binder in a Synthetic Lung Fluid. Chem Res Toxicol 2019; 32:2398-2410. [DOI: 10.1021/acs.chemrestox.9b00179] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
| | | | - Mette Solvang
- ROCKWOOL International A/S, Hovedgaden 584, 2640 Hedehusene, Denmark
| | - Yuanzheng Yue
- Department of Chemistry and Bioscience, Aalborg University, 9220 Aalborg, Denmark
| | - Susan L. S. Stipp
- Department of Physics, Technical University of Denmark, 2800 Kongens Lyngby, Denmark
| |
Collapse
|
2
|
|
3
|
Cardiano P, Giacobello F, Giuffrè O, Sammartano S. Thermodynamics of Al3+-thiocarboxylate interaction in aqueous solution. J Mol Liq 2016. [DOI: 10.1016/j.molliq.2016.07.077] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
4
|
Sun Y, Fan W, Zheng H, Zhang Y, Li F, Chen W. Evaluation of Dewatering Performance and Fractal Characteristics of Alum Sludge. PLoS One 2015; 10:e0130683. [PMID: 26121132 PMCID: PMC4487249 DOI: 10.1371/journal.pone.0130683] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Accepted: 05/22/2015] [Indexed: 11/19/2022] Open
Abstract
The dewatering performance and fractal characteristics of alum sludge from a drinking-water treatment plant were investigated in this study. Variations in residual turbidity of supernatant, dry solid content (DS), specific resistance to filtration (SRF), floc size, fractal dimension, and zeta potential were analyzed. Sludge dewatering efficiency was evaluated by measuring both DS and SRF. Results showed that the optimum sludge dewatering efficiency was achieved at 16 mg∙L(-1) flocculant dosage and pH 7. Under these conditions, the maximum DS was 54.6%, and the minimum SRF was 0.61 × 10(10) m∙kg(-1). Floc-size measurements demonstrated that high flocculant dosage significantly improved floc size. Correlation analysis further revealed a strong correlation between fractal dimension and floc size after flocculation. A strong correlation also existed between floc size and zeta potential, and flocculants with a higher cationic degree had a larger correlation coefficient between floc size and zeta potential. In the flocculation process, the main flocculation mechanisms involved adsorption bridging under an acidic condition, and a combination between charge neutralization and adsorption-bridging interaction under neutral and alkaline conditions.
Collapse
Affiliation(s)
- Yongjun Sun
- Key laboratory of the Three Gorges Reservoir Region's Eco-Environment, State Ministry of Education, Chongqing University, Chongqing, China
- National Centre for International Research of Low-carbon and Green Buildings, Chongqing University, Chongqing, China
- * E-mail: (HZ); (YS)
| | - Wei Fan
- Key laboratory of the Three Gorges Reservoir Region's Eco-Environment, State Ministry of Education, Chongqing University, Chongqing, China
| | - Huaili Zheng
- Key laboratory of the Three Gorges Reservoir Region's Eco-Environment, State Ministry of Education, Chongqing University, Chongqing, China
- National Centre for International Research of Low-carbon and Green Buildings, Chongqing University, Chongqing, China
- * E-mail: (HZ); (YS)
| | - Yuxin Zhang
- National Key Laboratory of Fundamental Science of Micro/Nano-Devices and System Technology, College of Materials Science and Engineering, Chongqing University, Chongqing, China
| | - Fengting Li
- Key Laboratory of Yangtze River Water Environment, Ministry of Education, State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, China
| | - Wei Chen
- Key laboratory of the Three Gorges Reservoir Region's Eco-Environment, State Ministry of Education, Chongqing University, Chongqing, China
| |
Collapse
|
5
|
Zhao S, Gao B, Sun S, Yue Q, Dong H, Song W. Coagulation efficiency, floc properties and membrane fouling of polyaluminum chloride in coagulation–ultrafiltration system: The role of magnesium. Colloids Surf A Physicochem Eng Asp 2015. [DOI: 10.1016/j.colsurfa.2015.01.036] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
6
|
Pardo P, Calatayud JM, Alarcón J. Improvement of boehmite nanoparticles' aqueous dispersability by controlling their size, shape and crystallinity. RSC Adv 2014. [DOI: 10.1039/c4ra06322h] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Control of size, morphology and dispersability in water of the boehmite nanoparticles prepared with additives by a hydrothermal method.
Collapse
Affiliation(s)
- Pablo Pardo
- University of Valencia
- Department of Inorganic Chemistry
- 46100-Burjasot, Spain
| | | | - Javier Alarcón
- University of Valencia
- Department of Inorganic Chemistry
- 46100-Burjasot, Spain
| |
Collapse
|
7
|
Wang W, Zhang X, Wang H, Wang X, Zhou L, Liu R, Liang Y. Laboratory study on the adsorption of Mn(2+) on suspended and deposited amorphous Al(OH)(3) in drinking water distribution systems. WATER RESEARCH 2012; 46:4063-4070. [PMID: 22687525 DOI: 10.1016/j.watres.2012.05.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2011] [Revised: 05/06/2012] [Accepted: 05/10/2012] [Indexed: 06/01/2023]
Abstract
Manganese (II) is commonly present in drinking water. This paper mainly focuses on the adsorption of manganese on suspended and deposited amorphous Al(OH)(3) solids. The effects of water flow rate and water quality parameters, including solution pH and the concentrations of Mn(2+), humic acid, and co-existing cations on adsorption were investigated. It was found that chemical adsorption mainly took place in drinking water with pHs above 7.5; suspended Al(OH)(3) showed strong adsorption capacity for Mn(2+). When the total Mn(2+) input was 3 mg/L, 1.0 g solid could accumulate approximately 24.0 mg of Mn(2+) at 15 °C. In drinking water with pHs below 7.5, because of H(+) inhibition, active reaction sites on amorphous Al(OH)(3) surface were much less. The adsorption of Mn(2+) on Al(OH)(3) changed gradually from chemical coordination to physical adsorption. In drinking water with high concentrations of Ca(2+), Mg(2+), Fe(3+), and HA, the removal of Mn(2+) was enhanced due to the effects of co-precipitation and adsorption. In solution with 1.0 mg/L HA, the residual concentration of Mn(2+) was below 0.005 mg/L, much lower than the limit value required by the Chinese Standard for Drinking Water Quality. Unlike suspended Al(OH)(3), deposited Al(OH)(3) had a much lower adsorption capacity of 0.85 mg/g, and the variation in flow rate and major water quality parameters had little effect on it. Improved managements of water age, pipe flushing and mechanical cleaning were suggested to control residual Mn(2+).
Collapse
Affiliation(s)
- Wendong Wang
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, Shaanxi 710055, China.
| | | | | | | | | | | | | |
Collapse
|
8
|
Tan HB. Preparation of long alumina fibers by sol-gel method using tartaric acid. INTERNATIONAL JOURNAL OF MINERALS, METALLURGY, AND MATERIALS 2011; 18:691-694. [DOI: 10.1007/s12613-011-0498-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
|
9
|
Wang W, Yang H, Wang X, Jiang J, Zhu W. Effects of fulvic acid and humic acid on aluminum speciation in drinking water. J Environ Sci (China) 2010; 22:211-217. [PMID: 20397408 DOI: 10.1016/s1001-0742(09)60095-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
This article focused on the influences of fulvic acid and humic acid on aluminum speciation in drinking water. Factors including the concentration of residual chlorine and pH value had been concerned. Aluminum species investigated in the experiments included inorganic mononuclear, organic mononuclear, mononuclear, polymer, soluble, and suspended forms. It was found that the effects of fulvic acid and humic acid on aluminum speciation depended mainly on their molecular weight. Fulvic acid with molecular weight less than 5000 Dalton had little influence on aluminum speciation; while fulvic acid with molecular weight larger than 5000 Dalton and humic acid would increase the concentration of soluble aluminum significantly even at concentration below 0.5 mg/L (calculated as TOC). Aluminum species, in the present of fulvic acid with molecular weight larger than 5000 Dalton and humic acid, were more stable than that in the present of fluvic acid with molecular mass less than 5000 Dalton, and varied little with reaction time. Within pH range 6.5-7.5, soluble aluminum increased notably in water with organic matter. As the concentration of residual chlorine increased, the effects of fulvic acid and humic acid became weak. The reactions between humic acid, fulvic acid with large molecular weight, and aluminum were considered to be a multi-dentate coordination process. With the consideration of aluminum bioavailability, reducing the concentration of fulvic acid and humic acid and keeping the pH value among 6.5-7.5 were recommended during drinking water treatment.
Collapse
Affiliation(s)
- Wendong Wang
- Department of Environmental Science and Engineering, Tsinghua University, Beijing 100084, China.
| | | | | | | | | |
Collapse
|
10
|
Hamada YZ, Greene JT, Shields V, Pratcher M, Gardiner S, Waddell E, Shreeves S, Sunda-Meya A, Phambu N. Spectroscopic and potentiometric studies of the interaction of adenine with trivalent metal ions. J COORD CHEM 2009. [DOI: 10.1080/00958970903377279] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Yahia Z. Hamada
- a Department of Natural and Mathematical Sciences , LeMoyne-Owen College , Memphis, TN 38126, USA
| | - Jasmine T. Greene
- a Department of Natural and Mathematical Sciences , LeMoyne-Owen College , Memphis, TN 38126, USA
| | - Veronica Shields
- a Department of Natural and Mathematical Sciences , LeMoyne-Owen College , Memphis, TN 38126, USA
| | - Monique Pratcher
- a Department of Natural and Mathematical Sciences , LeMoyne-Owen College , Memphis, TN 38126, USA
| | - Shandera Gardiner
- a Department of Natural and Mathematical Sciences , LeMoyne-Owen College , Memphis, TN 38126, USA
| | - Emanuel Waddell
- b Department of Chemistry , University of Alabama in Huntsville , Huntsville, AL 35899, USA
| | - Stephen Shreeves
- b Department of Chemistry , University of Alabama in Huntsville , Huntsville, AL 35899, USA
| | - Anderson Sunda-Meya
- c Department of Physics and Dual Engineering , Xavier University of Louisiana , New Orleans, LA 70125, USA
| | - Nsoki Phambu
- d Department of Chemistry , Tennessee State University , Nashville, TN 37209, USA
| |
Collapse
|
11
|
Pascual-Cosp J, Artiaga R, Corpas-Iglesias F, Benítez-Guerrero M. Synthesis and characterization of a new aluminium-based compound. Dalton Trans 2009:6299-308. [DOI: 10.1039/b900550a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
12
|
BORJIGIN S, ASHIMURA Y, YOSHIOKA T, MIZOGUCHI T. Determination of Fluoride Using Ion-selective Electrodes in the Presence of Aluminum. ANAL SCI 2009; 25:1437-43. [DOI: 10.2116/analsci.25.1437] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
| | - Yuuta ASHIMURA
- Environment Conservation Research Institute, Tohoku University
| | | | | |
Collapse
|
13
|
Lerner A. Aluminum is a potential environmental factor for Crohn's disease induction: extended hypothesis. Ann N Y Acad Sci 2007; 1107:329-45. [PMID: 17804561 DOI: 10.1196/annals.1381.035] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Aluminum (Al) is a common environmental compound with immune-adjuvant activity and granulomatous inflammation inducer. Al exposure in food, additives, air, pharmaceuticals, and water pollution is ubiquitous in Western culture. Crohn's disease (CD) is a chronic relapsing intestinal inflammation in genetically susceptible individuals and is influenced by yet unidentified environmental factors. It is hypothesized, in the present review, that Al is a potential factor for induction or maintaining the inflammation in CD. Epidemiologically, CD incidence is higher in urban areas, where microparticle pollution is prevalent. Al immune activities share many characteristics with the immune pathology of CD: increased antigen presentation and APCs activation, many luminal bacterial or dietary compounds can be adsorbed to the metal and induce Th1 profile activity, promotion of humoral and cellular immune responses, proinflammatory, apoptotic, oxidative activity, and stress-related molecule expression enhancement, affecting intestinal bacterial composition and virulence, granuloma formation, colitis induction in an animal model of CD, and terminal ileum uptake. The Al-bacterial interaction, the microparticles homing the intestine together with the extensive immune activity, put Al as a potential environmental candidate for CD induction and maintenance.
Collapse
Affiliation(s)
- Aaron Lerner
- Pediatric Gastroenterology and Nutrition Unit, Carmel Medical Center, Pappaport School of Medicine, Technion-Israel Institute of Technology, Haifa, Israel.
| |
Collapse
|
14
|
Corvis Y, Korchowiec B, Brezesinski G, Follot S, Rogalska E. Impact of aluminum on the oxidation of lipids and enzymatic lipolysis in monomolecular films at the air/water interface. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2007; 23:3338-48. [PMID: 17279785 DOI: 10.1021/la0629429] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
There is evidence that serious pathologies are associated with aluminum (Al). In the present work, the influence of Al on enzymatic lipolysis was studied with the aim to get more insight into the possible link between the Al-induced membrane modification and the cytotoxicity of the trivalent cation (AlIII). Lipid monolayers were used as model membranes. The monomolecular film technique allowed monitoring the Al-dependent modifications of the lipid monolayer properties and enzyme kinetics. Two enzymes, namely, Candida rugosa lipase and a calcium (CaII)-dependent phospholipase A2 from porcine pancreas, were used to catalyze the lipolysis of triglyceride and phosphoglyceride monolayers, respectively. The results obtained show that Al modifies both the monolayer structure and enzymatic reaction rates. While the enzymes used in this study can be considered as probes detecting lipid membrane properties, it cannot be excluded that in physiological conditions modulation of the enzyme action by the Al-bound membranes is among the reasons for Al toxicity.
Collapse
Affiliation(s)
- Yohann Corvis
- Groupe d'Etude des Vecteurs Supramoléculaires du Médicament UMR 7565 CNRS/Université Henri Poincaré Nancy 1, Faculté des Sciences, BP 239, 54506 Vandoeuvre-lés-Nancy cedex, France
| | | | | | | | | |
Collapse
|
15
|
Kelly MT, Blaise A. Validation and evaluation of a high performance liquid chromatographic method for the determination of aluminium in wine. J Chromatogr A 2006; 1134:74-80. [PMID: 16963061 DOI: 10.1016/j.chroma.2006.08.063] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2006] [Revised: 08/17/2006] [Accepted: 08/18/2006] [Indexed: 10/24/2022]
Abstract
A new method is reported for the determination of aluminium in wine by HPLC, involving derivatisation with 8-hydroxyquinoline (oxine) in the presence of micelles resulting in the formation of a fluorescent derivative. The complex is separated on a C18 column using a mobile phase of oxine - SDS - 35% acetonitrile, in a pH 7 buffer. The method was validated in the range 0.125-2 mg/l in a synthetic wine. The method was applied to the determination of aluminium in white, rosé and red wines and results compared with those obtained by atomic absorption (GFAA). Aluminium concentrations found by HPLC in white wines were greater than those found in red wines. Further investigation using a polyphenol-enriched white wine revealed a statistically significant inverse relationship between wine polyphenol content and the aluminium concentration determined by HPLC. The method may therefore be envisaged for the determination of unbound aluminium in wine.
Collapse
Affiliation(s)
- Mary T Kelly
- Centre de Formation et de la Recherche en cenologie, (UMR 1083 Sciences pour cenologie), Université Montpellier I, UFR des Sciences Pharmaceutiques et Biologiques, BP 14491, 34093 Montpellier Cedex 5, France.
| | | |
Collapse
|
16
|
Matús P, Kubová J. Complexation of labile aluminium species by chelating resins Iontosorb – a new method for Al environmental risk assessment. J Inorg Biochem 2005; 99:1769-78. [PMID: 16043222 DOI: 10.1016/j.jinorgbio.2005.06.009] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2005] [Revised: 06/09/2005] [Accepted: 06/14/2005] [Indexed: 11/24/2022]
Abstract
The utilization of chelating ion-exchange by the method based on binding strength and kinetic discrimination for aluminium fractionation was studied. Two chelating cellulose resins, Iontosorb Oxin (IO) and Iontosorb Salicyl (IS), were used for the determination of quickly reacting labile aluminium species. The possibilities of aluminium fractionation on these chelating resins were investigated by a solid phase extraction technique. The study of the pH (2.5-6.0) influence on the Al complexation by both resins indicates that at low pH the IS has lower sorption capacity but better adsorptive kinetic properties than IO. The optimal resin complexation time for reactive Al species was experimentally found after aluminium sorption study at pH 4.0 in synthetic solutions containing some inorganic and organic ligands, which simulate the composition of analysed acid soil and water samples. The negative influence of sulphate and iron on the Al complexation by IS resin was found and investigated. The flame atomic absorption spectrometry was used for the aluminium quantification.
Collapse
Affiliation(s)
- Peter Matús
- Comenius University in Bratislava, Faculty of Natural Sciences, Mlynská dolina, 842 15 Bratislava 4, Slovakia.
| | | |
Collapse
|
17
|
Prakash P, SenGupta AK. Selective coagulant recovery from water treatment plant residuals using Donnan membrane process. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2003; 37:4468-4474. [PMID: 14572102 DOI: 10.1021/es030371q] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Fouling of membrane surfaces by particulate matter and large organic molecules is relatively common for pressure-driven membrane processes, namely, reverse osmosis (RO), nanofiltration (NF), and ultrafiltration (UF). Donnan membrane process (DMP) or Donnan Dialysis is driven by electrochemical potential gradient across a semipermeable ion exchange membrane. Theoretically, DMP is not susceptible to fouling by fine particulates and/or large organic molecules. According to information available in the open literature, however, DMP has not been tried to treat slurry or sludge with relatively high concentration of suspended solids or large organic molecules. This study presents the salient results of an extensive investigation pertaining to selective alum recovery from water treatment residuals (WTR) using DMP. Water treatment plants use alum, Al2(SO4)3 x 14H2O, as a coagulant, alum being finally converted and discharged as insoluble aluminum hydroxide along with natural organic matters (NOM), suspended solids, and other trace impurities. One commercial cation exchange membrane, namely Nafion 117 from DuPont Chemical Co., was used in the study for treating WTR obtained from two different water treatment plants in Pennsylvania. A series of laboratory tests confirmed that over 70% of alum is easily recoverable, and recovered alum is essentially free of particulate matter, NOM, and other trace metals. Most importantly, after repeated usage in the presence of high concentration of NOM and suspended solids, there was no noticeable decline in aluminum flux through the membrane, i.e., membrane surface fouling was practically absent. The DMP process involves coupled transport of Al3+ and H+ across the cation exchange membrane, and intramembrane transport was the rate-limiting step. Experimentally determined aluminum-hydrogen interdiffusion coefficient (D(Al-H)) values within the membrane were quite high (approximately 10(-6) cm2/s) under representative conditions, thus confirming high alum recovery rate. DMP was also found equally effective in recovering Fe(III) based coagulants from WTR.
Collapse
Affiliation(s)
- Prakhar Prakash
- Department of Civil and Environmental Engineering, 13 East Packer Avenue, Lehigh University, Bethlehem, Pennsylvania 18015, USA
| | | |
Collapse
|
18
|
Denizli A, Say R, Pişkin E. Removal of aluminium by Alizarin Yellow-attached magnetic poly(2-hydroxyethyl methacrylate) beads. REACT FUNCT POLYM 2003. [DOI: 10.1016/s1381-5148(02)00219-5] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
19
|
Daydé S, Champmartin D, Rubini P, Berthon G. Aluminium speciation studies in biological fluids. Part 8. A quantitative investigation of Al(III)–amino acid complex equilibria and assessment of their potential implications for aluminium metabolism and toxicity. Inorganica Chim Acta 2002. [DOI: 10.1016/s0020-1693(02)01046-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
20
|
Aluminum: Interaction with Nucleotides and Nucleotidases and Analytical Aspects of Its Determination. STRUCTURE AND BONDING 2002. [DOI: 10.1007/3-540-45425-x_4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/08/2023]
|
21
|
Salifoglou A. Synthetic and structural carboxylate chemistry of neurotoxic aluminum in relevance to human diseases. Coord Chem Rev 2002. [DOI: 10.1016/s0010-8545(02)00084-x] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
22
|
Berthon G. Aluminium speciation in relation to aluminium bioavailability, metabolism and toxicity. Coord Chem Rev 2002. [DOI: 10.1016/s0010-8545(02)00021-8] [Citation(s) in RCA: 277] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
23
|
Rubini P, Lakatos A, Champmartin D, Kiss T. Speciation and structural aspects of interactions of Al(III) with small biomolecules. Coord Chem Rev 2002. [DOI: 10.1016/s0010-8545(01)00467-2] [Citation(s) in RCA: 79] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
24
|
Golub MS, Germann SL. Long-term consequences of developmental exposure to aluminum in a suboptimal diet for growth and behavior of Swiss Webster mice. Neurotoxicol Teratol 2001; 23:365-72. [PMID: 11485839 DOI: 10.1016/s0892-0362(01)00144-1] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Swiss Webster mice received diets containing 7 (control), 100, 500, or 1000 microg aluminum (Al)/g throughout development (conception to 35 days of age) and were tested behaviorally as adults (>90 days of age). The basal diet contained the same percent of recommended dietary amounts of phosphate, calcium, iron, magnesium, and zinc as young women usually consume. These "realistic" dietary conditions led to 12--15% growth retardation in the Al1000 group at the time of testing. Females were evaluated in a cognitive task (Morris water maze) at 3 months of age and males were evaluated in a motor test battery at 5 months of age. Al1000 females (n=16) were slower than controls in learning the Morris maze, as suggested by fewer mice with low latencies during the first three sessions of the four-session learning series. Influences of Al on cue utilization were also found in probe sessions eliminating salient or nonsalient cues. With motor testing, the Al1000 males (n=20) had significantly lower hindlimb grip strength than controls, an effect that was eliminated by covariance analysis with body weight. Subtle influences of Al on rotarod and wire suspension tests were also noted. The data suggest that developmental Al exposure under normal, but less than optimal, dietary conditions can lead to subtle but long-term effects on growth and brain function in adulthood.
Collapse
Affiliation(s)
- M S Golub
- Department of Internal Medicine, California Regional Primate Research Center, University of California, Davis, 1 Shields Avenue, Davis, CA 95616, USA.
| | | |
Collapse
|
25
|
Venturini-Soriano M, Berthon G. Aluminum speciation studies in biological fluids. Part 7. A quantitative investigation of aluminum(III)-malate complex equilibria and their potential implications for aluminum metabolism and toxicity. J Inorg Biochem 2001; 85:143-54. [PMID: 11410234 DOI: 10.1016/s0162-0134(01)00206-9] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
As a nonessential element, aluminum may be toxic at both environmental and therapeutic levels, depending on ligand interactions. Dietary acids that normally occur in fruits and vegetables and commonly serve as taste enhancers are good ligands of the Al(3+) ion. Malic acid is one of these and also one of the most predominant in food and beverages. The present paper reports an examination of its potential influence on aluminum bioavailability through speciation calculations based on Al(III)-malate complex formation constants especially determined for physiological conditions. According to the results obtained, malate appears to be extremely effective in maintaining Al(OH)(3) soluble over the whole pH range of the small intestine under normal dietary conditions. In addition, two neutral Al(III)--malate complexes are formed whose percentages are maximum from very low malate levels. When aluminum is administered therapeutically as its trihydroxide, the amount of metal neutralized by malate peaks as its solubility pH range regresses to its original limits in the absence of malate. The enhancing effect of malate towards aluminum absorption is therefore virtually independent of the aluminum level in the gastrointestinal tract. The presence of phosphate in the gastrointestinal juice is expected to limit the potential influence of malate on aluminum absorption. Under normal dietary conditions, phosphate effectively reduces the fraction of aluminum neutralized by malate but without nullifying it. Aluminum phosphate is predicted to precipitate when aluminum levels are raised as with the administration of aluminum hydroxide, but a significant amount of neutral aluminum malate still remains in solution. Even therapeutic aluminum phosphate is not totally safe in the presence of malate, even at low malate concentrations. As plasma simulations predict that no compensatory effect in favor of aluminum excretion may be expected from malate, simultaneous ingestion of malic acid with any therapeutic aluminum salt should preferably be avoided.
Collapse
Affiliation(s)
- M Venturini-Soriano
- Equipe de Chimie Bioinorganique Médicale, ICMPS-CNRS FR1744, Université Paul Sabatier, 118 route de Narbonne (Bât. 3SC), 31062 Toulouse, France
| | | |
Collapse
|