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Affiliation(s)
- Ahmed F. A. Youssef
- Chemistry Department Faculty of Science Cairo University Gamma Street Giza 12613 Egypt
- University of Science and Technology, Zewail City Ahmed Zewail Road, October Gardens, 6th of October City Giza 12578 Egypt
| | - Marwa Abd Dayiem
- Chemistry Department Faculty of Science Cairo University Gamma Street Giza 12613 Egypt
- Water Laboratory Chemistry Department Ramses Street Cairo Egypt
| | - Ola R. Shehab
- Chemistry Department Faculty of Science Cairo University Gamma Street Giza 12613 Egypt
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Abstract
There is great interest in rapidly monitoring metals of biological and environmental interest. Electrochemistry is traditionally a powerful tool for metal analysis but can be limited by its scope and low temporal resolution. The scope is limited by the potential window of the working electrode and rapid analysis is limited, in part, by the need for nucleation/growth for preconcentration. In prior work, we showed that a rapid equilibrium mediated preconcentration process facilitated fast scan cyclic voltammetry (FSCV) responses to Cu(II) and Pb(II) at carbon fiber microelectrodes (CFMs). In this manuscript, we apply this same principle to Ca(II), Al(III), Mg(II), and Zn(II), metal ions that are traditionally difficult to electroanalyze. We demonstrate FSCV reduction peaks for these four metals whose positions and amplitudes are dependent on scan rate. The adsorption profiles of these ions onto CFMs follow Langmuir's theory for monolayer coverage. We calculate the thermodynamic equilibrium constant of metal adsorption onto CFMs and find that these constants follow the same order as those previously reported by other groups on other activated carbon materials. Finally, a real-time complexation study is performed with ligands that have preference for divalent or multivalent ions to probe the selectivity of the real-time signal. We observe a linear relationship between formation constant ( kf) and % change in the FSCV signal and use this correlation to, for the first time, report the kf of an Al(III)-complex. This work demonstrates the versatility of FSCV as a method with capacity to extend the scope of rapid electroanalysis.
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Affiliation(s)
- Thushani Siriwardhane
- Department of Chemistry and Biochemistry , University of South Carolina , 631 Sumter Street , Columbia , South Carolina 29208 , United States
| | - Yangguang Ou
- Department of Chemistry and Biochemistry , University of South Carolina , 631 Sumter Street , Columbia , South Carolina 29208 , United States
| | - Pavithra Pathirathna
- Department of Chemistry and Biochemistry , University of South Carolina , 631 Sumter Street , Columbia , South Carolina 29208 , United States
| | - Parastoo Hashemi
- Department of Chemistry and Biochemistry , University of South Carolina , 631 Sumter Street , Columbia , South Carolina 29208 , United States
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Zhang L, Luo J, Shen X, Li C, Wang X, Nie B, Fang H. Quantitative Determining of Ultra-Trace Aluminum Ion in Environmental Samples by Liquid Phase Microextraction Assisted Anodic Stripping Voltammetry. Sensors (Basel) 2018; 18:E1503. [PMID: 29748500 DOI: 10.3390/s18051503] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/31/2018] [Revised: 05/03/2018] [Accepted: 05/06/2018] [Indexed: 01/31/2023]
Abstract
Direct detecting of trace amount Al(III) in aqueous solution by stripping voltammetry is often frustrated by its irreversible reduction, resided at −1.75 V (vs. Ag/AgCl reference), which is in a proximal potential of proton reduction. Here, we described an electroanalytical approach, combined with liquid phase microextraction (LPME) using ionic liquid (IL), to quantitatively assess trace amount aluminum in environmental samples. The Al(III) was caged by 8-hydroxyquinoline, forming a superb hydrophobic metal⁻chelate, which sequentially transfers and concentrates in the bottom layer of IL-phase during LPME. The preconcentrated Al(III) was further analyzed by a square-wave anodic stripping voltammetry (SW-ASV). The resulting Al-deposited electrodes were characterized by scanning electron microscopy and powder X-ray diffraction, showing the intriguing amorphous nanostructures. The method developed provides a linear calibration ranging from 0.1 to 1.2 ng L−1 with a correlation coefficient of 0.9978. The LOD attains as low as 1 pmol L−1, which reaches the lowest report for Al(III) detection using electroanalytical techniques. The applicable methodology was implemented for monitoring Al(III) in commercial distilled water.
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SEE WP, HENG LY, NATHAN S. Highly Sensitive Aluminium(III) Ion Sensor Based on a Self-assembled Monolayer on a Gold Nanoparticles Modified Screen-printed Carbon Electrode. ANAL SCI 2015; 31:997-1003. [DOI: 10.2116/analsci.31.997] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Wong Pooi SEE
- School of Chemical Sciences and Food Technology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia (UKM)
| | - Lee Yook HENG
- School of Chemical Sciences and Food Technology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia (UKM)
- South East Asia Disaster Prevention Research Institute (SEADPRI), Universiti Kebangsaan, Malaysia
| | - Sheila NATHAN
- School of Chemical Sciences and Food Technology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia (UKM)
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Heena, Kumar R, Rani S, Malik AK. Development of a Rapid and Sensitive Method for the Determination of Aluminum by Reverse-Phase High-Performance Liquid Chromatography Using a Fluorescence Detector. J Chromatogr Sci 2015; 53:800-6. [DOI: 10.1093/chromsci/bmu128] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2014] [Indexed: 11/15/2022]
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Magnier A, Fekete V, Van Loco J, Bolle F, Elskens M. Speciation study of aluminium in beverages by Competitive Ligand Exchange–Adsorptive Stripping Voltammetry. Talanta 2014; 122:30-5. [DOI: 10.1016/j.talanta.2013.12.051] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2013] [Revised: 12/16/2013] [Accepted: 12/24/2013] [Indexed: 11/24/2022]
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Ni Y, Huang C, Kokot S. Simultaneous determination of iron and aluminium by differential kinetic spectrophotometric method and chemometrics. Anal Chim Acta 2007; 599:209-18. [PMID: 17870283 DOI: 10.1016/j.aca.2007.08.005] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2007] [Revised: 07/07/2007] [Accepted: 08/01/2007] [Indexed: 11/16/2022]
Abstract
A differential kinetic spectrophotometric method was researched and developed for the simultaneous determination of iron and aluminium in food samples. It was based on the direct reaction kinetics and spectrophotometry of these two metal ions with Chrome Azurol S (CAS) in ethylenediamine-hydrochloric acid buffer (pH 6.3). The results were interpreted with the use of chemometrics. The kinetic runs and the visible spectra of the complex formation reaction were studied between 540 and 750 nm every 30 s over a total period of 285 s. A set of synthetic metal mixture samples was used to build calibrations models. These were based on the spectral and kinetic two-way data matrices, which were processed separately by the radial basis function-artificial neural network (global RBF-ANN) method. The prediction performance of these models was poorer than that from the combined kinetic-spectral three-way array, which was similarly processed by the same method (% relative prediction error (RPE(T))=5.6). These results demonstrate that improved predictions can be obtained from the data array, which has more information, and that appropriate chemometrics methods can enhance analytical performance of simple techniques such as spectrophotometry. Other chemometrics models were then applied: N-way partial least squares (NPLS), parallel factor analysis (PARAFAC), back propagation-artificial neural network (BP-ANN), single radial basis function-artificial neural network (RBF-ANN), and principal component neural network (PC-RBF-ANN). There was no substantial difference between the methods with the overall %RPE(T) range being 5.0-5.8. These two values corresponded to the NPLS and BP-ANN models, respectively. The proposed method was applied for the determination of iron and aluminium in some commercial food samples with satisfactory results.
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Affiliation(s)
- Yongnian Ni
- Department of Chemistry, Nanchang University, Nanchang, Jiangxi 330047, China.
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ZHANG F, ZHANG M, CHENG J, YANG L, JI M, BI S. Direct Voltammetric Specific Recognition of Dopamine Using AlIII-DA Complexes at the Hanging Mercury Drop Electrode. ANAL SCI 2007; 23:1325-9. [DOI: 10.2116/analsci.23.1325] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Fuping ZHANG
- School of Chemistry & Chemical Engineering, MOE Key Laboratory for Life Science & State Key Laboratory of Coordination Chemistry of China, Nanjing University
| | - Min ZHANG
- School of Chemistry & Chemical Engineering, MOE Key Laboratory for Life Science & State Key Laboratory of Coordination Chemistry of China, Nanjing University
| | - Jiongjia CHENG
- School of Chemistry & Chemical Engineering, MOE Key Laboratory for Life Science & State Key Laboratory of Coordination Chemistry of China, Nanjing University
| | - Li YANG
- School of Chemistry & Chemical Engineering, MOE Key Laboratory for Life Science & State Key Laboratory of Coordination Chemistry of China, Nanjing University
| | - Ming JI
- School of Chemistry & Chemical Engineering, MOE Key Laboratory for Life Science & State Key Laboratory of Coordination Chemistry of China, Nanjing University
| | - Shuping BI
- School of Chemistry & Chemical Engineering, MOE Key Laboratory for Life Science & State Key Laboratory of Coordination Chemistry of China, Nanjing University
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Themelis DG, Kika FS. Flow and sequential injection methods for the spectrofluorimetric determination of aluminium in pharmaceutical products using chromotropic acid as chromogenic reagent. J Pharm Biomed Anal 2006; 41:1179-85. [PMID: 16621417 DOI: 10.1016/j.jpba.2006.02.056] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2006] [Revised: 02/21/2006] [Accepted: 02/25/2006] [Indexed: 11/24/2022]
Abstract
This work reports rapid and sensitive FI and SI spectrofluorimetric methods for the determination of aluminium in pharmaceutical formulations. The methods are based on the reaction of aluminium with chromotropic acid (CA) in acidic medium to form a water-soluble complex (lambdaex.=360 nm, lambdaem.=385 nm). The proposed methods were validated in terms of linearity, repeatability, detection limit, accuracy and selectivity. The calibration curves were linear over the range of 0.03-2.0 and 0.1-4.0mg/l of aluminium using the FI and SI assays, respectively. The repeatabilities (sr=0.8% and 1.1% at 1mg/l aluminium using the FI and the SI assay, respectively, n=12) were satisfactory. The FI and SI methods proved to be adequately selective and sensitive with respective 3sigma limits of detection equal to cL=0.01 and 0.03 mg/l Al(III). The sampling rates were 120 and 72 h(-1) with the FI and SI assay. The methods were applied successfully to the analysis of pharmaceutical formulations (tablets and suspensions). The results were in good agreement with those by an official reference method and the nominal values of the pharmaceutical products.
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Affiliation(s)
- Demetrius G Themelis
- Laboratory of Analytical Chemistry, Department of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece.
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Zhang F, Ji M, Xu Q, Yang L, Bi S. Linear scan voltammetric indirect determination of AlIII by the catalytic cathodic response of norepinephrine at the hanging mercury drop electrode. J Inorg Biochem 2005; 99:1756-61. [PMID: 16039719 DOI: 10.1016/j.jinorgbio.2005.06.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2005] [Revised: 05/24/2005] [Accepted: 06/09/2005] [Indexed: 10/25/2022]
Abstract
The biological effects of aluminum (Al) have received much attention in recent years. Al is of basic relevance as concern with its reactivity and bioavailability. In this paper, the electrochemical behaviors of norepinephrine (NE) in the absence and presence of Al(III) at the hanging mercury drop electrode have been studied and applied to the practical analysis. Highly selective catalytic cathodic peak of NE is yielded by linear scan voltammetry (LSV) at -1.32 V (vs. SCE). A linear relationship holds between the cathodic peak current and the Al(III) concentration. It has been successfully applied to the determination of Al(III) in real waters and synthetic biological samples with satisfying results, which are in accordance with those obtained by ICP-AES method. The electrochemical properties and the mechanisms of the peaks in the presence and absence of Al(III) have been explored. The results show that they are irreversible adsorptive hydrogen catalytic waves. These studies not only enrich the methods of determining Al, but also lay foundations of further understanding of the mechanisms of neurodementia.
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Affiliation(s)
- Fuping Zhang
- Department of Chemistry, State Key Laboratory of Coordination Chemistry of China, Key Laboratory of MOE for Life Science, Nanjing University, Nanjing 210093, PR China
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Lian H, Kang Y, Bi S, Arkin Y, Shao D, Li D, Chen Y, Dai L, Gan N, Tian L. Direct determination of trace aluminum with quercetin by reversed-phase high performance liquid chromatography. Talanta 2004; 62:43-50. [DOI: 10.1016/s0039-9140(03)00405-3] [Citation(s) in RCA: 76] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2003] [Revised: 06/08/2003] [Accepted: 06/09/2003] [Indexed: 10/27/2022]
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Zhang F, Bi S, Liu J, Wang X, Yang X, Yang L, Yu Q, Hu J, Bai Z. ELECTROCHEMICAL AND SPECTROMETRIC STUDIES ON THE PRINCIPLE OF INDIRECT DETER-MINATION OF ALUMINUM USINGl-DOPA AS AN ELECTROACTIVE COMPLEXING LIGAND. ANAL LETT 2002. [DOI: 10.1081/al-120002367] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Zhang F, Bi S, Liu J, Yang X, Wang X, Yang L, Yu T, Chen Y, Dai L, Yang T. Application of dopamine as an electroactive ligand for the determination of aluminum in biological fluids. ANAL SCI 2002; 18:293-9. [PMID: 11918188 DOI: 10.2116/analsci.18.293] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Dopamine (3,4-dihydroxyphenylethylamine, DA) is applied as an electroactive chelant for indirect determination of aluminum (Al) in biological fluids. It is observed that the decrease of the differential pulse voltammetric (DPV) anodic peak current of DA is linear with the increase of Al concentration. Under optimum experimental conditions (pH 8.6, 2.0 x 10(-4) M DA, and 0.03 M NH4Ac-NH3 x H2O buffer solution), two linear ranges, 5.0 x 10(-8) - 4.0 x 10(-7) M and 4.0 x 10(-7) - 7.2 x 10(-6) M Al(III), are obtained. The detection limit of Al is 1.9 x 10(-8) M and the relative standard deviation for 4 x 10(-6) M Al(III) is 3.1% (N = 8). Many biologically active foreign species have been selected for interference. Excellent recoveries and accuracy have been obtained in the measurements of Al in biological samples such as synthetic renal dialysate, Ringer's solution, human whole blood, cerebrospinal fluid of demented patient, and urine of diabetic patient. The methodological principle that Al complexes with DA on the electroactive position result in the depression of electrochemical activities of DA has been verified by comparing both the electrochemical behaviors and the spectroscopic responses like UV-vis and Raman of DA in the presence and in the absence of Al.
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Affiliation(s)
- Fuping Zhang
- Department of Chemistry, Nanjing University, China
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Zhang F, Yang L, Bi S, Liu J, Liu F, Wang X, Yang X, Gan N, Yu T, Hu J, Li H, Yang T. Neurotransmitter dopamine applied in electrochemical determination of aluminum in drinking waters and biological samples. J Inorg Biochem 2001; 87:105-13. [PMID: 11709219 DOI: 10.1016/s0162-0134(01)00320-8] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
It was demonstrated that the decrease of the differential pulse voltammetric (DPV) anodic peak current of dopamine (3,4-dihydroxyphenylethylamine, DA) was linear with the increase of aluminum (Al) concentration. Under optimum experimental conditions (pH 4.6, 1.2 x 10(-3) M DA, and 0.04 M NaAc-HAc buffer solution), the linear range is 4.0 x 10(-7)-8.0 x 10(-5) M, the detection limit is 1.4 x 10(-7) M, and the relative standard deviation for 4 x 10(-5) M Al(III) is 3.5% (n=8). Many foreign species, especially some low-molecule-weight biological molecules, were chosen for interference testing. The proposed method was applied to the determination of Al in biological samples such as synthetic renal dialysate, Ringer's solution, human blood, cerebrospinal fluid of a patient, and urine of a diabetic patient. The corresponding recoveries were generally between 95 and 105%. The basic principle of the method was determined by examining Al complexed with DA. This results in the blockage of the electroactive sites on DA, followed eventually by the reduction of the electrochemical response of DA. This result was verified by examining the behavior of DA, both in the presence and absence of Al, using electrochemical, UV-Vis, Raman, and (13)C NMR spectroscopic methods.
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Affiliation(s)
- F Zhang
- State Key Laboratory of Coordination Chemistry of China, Department of Chemistry, Nanjing University, Nanjing 210093, PR China
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Zhang F, Bi S, Li H, Chen Y, Dai L. Application ofL-Dopa as an Electroactive Ligand for Indirect Determination of Aluminum in Biological Samples by Differential Pulse Voltammetry. ELECTROANAL 2001. [DOI: 10.1002/1521-4109(200108)13:12<1054::aid-elan1054>3.0.co;2-f] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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