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Huangfu X, Zhang Y, Wang Y, Ma C. The determination of thallium in the environment: A review of conventional and advanced techniques and applications. CHEMOSPHERE 2024; 358:142201. [PMID: 38692367 DOI: 10.1016/j.chemosphere.2024.142201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 04/28/2024] [Accepted: 04/29/2024] [Indexed: 05/03/2024]
Abstract
Thallium (Tl) is a potential toxicity element that poses significant ecological and environmental risks. Recently, a substantial amount of Tl has been released into the environment through natural and human activities, which attracts increasing attention. The determination of this hazardous and trace element is crucial for controlling its pollution. This article summarizes the advancement and progress in optimizing Tl detection techniques, including atomic absorption spectroscopy (AAS), voltammetry, inductively coupled plasma (ICP)-based methods, spectrophotometry, and X-ray-based methods. Additionally, it introduces sampling and pretreatment methods such as diffusive gradients in thin films (DGT), liquid-liquid extraction, solid phase extraction, and cloud point extraction. Among these techniques, ICP-mass spectrometry (MS) is the preferred choice for Tl detection due to its high precision in determining Tl as well as its species and isotopic composition. Meanwhile, some new materials and agents are employed in detection. The application of novel work electrode materials and chromogenic agents is discussed. Emphasis is placed on reducing solvent consumption and utilizing pretreatment techniques such as ultrasound-assisted processes and functionalized magnetic particles. Most detection is performed in aqueous matrices, while X-ray-based methods applied to solid phases are summarized which provide non-destructive analysis. This work improves the understanding of Tl determination technology while serving as a valuable resource for researchers seeking appropriate analytical techniques.
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Affiliation(s)
- Xiaoliu Huangfu
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region, Ministry of Education, College of Environment, and Ecology, Chongqing University, Chongqing 400044, China.
| | - Yifan Zhang
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region, Ministry of Education, College of Environment, and Ecology, Chongqing University, Chongqing 400044, China
| | - Yunzhu Wang
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region, Ministry of Education, College of Environment, and Ecology, Chongqing University, Chongqing 400044, China
| | - Chengxue Ma
- State Key Laboratory of Urban Water Resources and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
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Korolczuk M, Ochab M, Gęca I. Anodic Stripping Voltammetric Procedure of Thallium(I) Determination by Means of a Bismuth-Plated Gold-Based Microelectrode Array. SENSORS (BASEL, SWITZERLAND) 2024; 24:1206. [PMID: 38400364 PMCID: PMC10892365 DOI: 10.3390/s24041206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 02/01/2024] [Accepted: 02/07/2024] [Indexed: 02/25/2024]
Abstract
This article presents a new working electrode based on a bismuth-plated, gold-based microelectrode array, which is suitable for determining thallium(I) species using anodic stripping voltammetry (ASV). It allowed a significant increase in the sensitivity as compared to other voltammetric sensors. The main experimental conditions and the instrumental parameters were optimized. A very good proportionality between the Tl(I) peak current and its concentration was evidenced in the range from 5 × 10-10 up to 5 × 10-7 mol L-1 (R = 0.9989) for 120 s of deposition and from 2 × 10-10 up to 2 × 10-7 mol L-1 (R = 0.9988) for 180 s. A limit of detection (LOD) of 8 × 10-11 mol L-1 for a deposition time of 180 s was calculated. The effects of interfering ions on the Tl(I) analytical signal were studied. The proposed method was applied for quantitative Tl(I) detection in water certified reference material TM 25.5 as well as in spiked real water samples, for which satisfactory recovery values between 98.7 and 101.8% were determined.
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Affiliation(s)
| | | | - Iwona Gęca
- Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie Sklodowska University, 20-031 Lublin, Poland; (M.K.); (M.O.)
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Nodehi M, Baghayeri M, Kaffash A. Application of BiNPs/MWCNTs-PDA/GC sensor to measurement of Tl (1) and Pb (II) using stripping voltammetry. CHEMOSPHERE 2022; 301:134701. [PMID: 35472613 DOI: 10.1016/j.chemosphere.2022.134701] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2022] [Revised: 04/10/2022] [Accepted: 04/20/2022] [Indexed: 06/14/2023]
Abstract
Herein, simultaneous determination of Tl (1) and Pb (II) has been carried out at the surface of a modified glassy carbon electrode with polydopamine functionalized multi-walled carbon nanotubes- BiNPs nanocomposite (BiNPs/MWCNTs-PDA/GC) using square-wave anodic stripping voltammetry (SWASV) technique. The morphologies, composition and, electrochemical properties of the BiNPs/MWCNTs-PDA/GC were characterized by scanning electron microscopy (SEM), transition electron microscopy (TEM), X-ray energy dispersive spectroscopy (EDX), electrochemical impedance spectroscopy (EIS) and, SWASV. The parameters affecting the stripping current response were investigated and optimized. The large specific area of MWCNTs and good electro-conductibility of BiNPs causes the BiNPs/MWCNTs-PDA/GC electrode to exhibit an excellent electro-catalytic effect with good separation peaks for Tl and Pb oxidation compared to bare GCE under the optimal conditions. The proposed sensor showed wide leaner ranges from 0.4-100 ppb and 100-400 ppb for Tl (I) and Pb (II). Low detection limits of 0.04 ppb for Tl (I) and 0.07 ppb for Pb (II) were achieved. The efficiency of the electrode after thirty days of storage in ambient conditions without using it and also with the ability to reuse for 16 days did not decrease significantly. In addition, the modified electrode with simple preparation method showed good reproducibility, and high selectivity for measuring target ions. The method was successfully implemented for the simultaneous determination of Tl (I) and Pb (II) in tap, mineral and waste water samples with acceptable recovery (from 99.1-103.2 for Tl (I) and 98.4-100.4 for Pb (II)).
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Affiliation(s)
- Marzieh Nodehi
- Department of Chemistry, Faculty of Science, Hakim Sabzevari University, PO. Box 397, Sabzevar, Iran
| | - Mehdi Baghayeri
- Department of Chemistry, Faculty of Science, Hakim Sabzevari University, PO. Box 397, Sabzevar, Iran.
| | - Afsaneh Kaffash
- Department of Internal Medicine, Faculty of Medicine, Sabzevar University of Medical Sciences, Sabzevar, Iran
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Construction of a Tl(I) voltammetric sensor based on ZIF-67 nanocrystals: optimization of operational conditions via response surface design. Anal Bioanal Chem 2021; 413:5215-5226. [PMID: 34259876 DOI: 10.1007/s00216-021-03493-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Revised: 06/17/2021] [Accepted: 06/21/2021] [Indexed: 01/15/2023]
Abstract
An electroanalytical sensor was constructed constituted on a carbon paste electrode (CPE) with a ZIF-67 modifier and devoted to the quantification of Tl(I). Several characterization tests including XRD, BET, FT-IR, SEM/EDS/mapping, TEM, impedance spectroscopy (EIS), and cyclic voltammetry (CV) were performed on the synthesized ZIF-67 nanocrystals and CPE matrix. Central composite design (CCD) was used to assess the impact of variables affecting the sensor response, including the weight percent of ZIF-67 (14%), the pH of the thallium accumulation solution (6.4), and accumulation time (315 s) as well as the accumulation potential (-1.2 V). The direct linear relationship between the sensor response and the concentration of Tl(I) is in the interval of 1.0×10-10 to 5.0×10-7 M (coefficient of determination = 0.9994). The detection limit is approximately 1.0 × 10-11 M. The right selection of the MOF makes this sensor highly resistant to the interference of other ions. High selectivity against common interferences in the measurement of thallium (such as Pb(II) and Cd(II)) is an important feature of this sensor. To confirm the performance of the prepared sensor, the amount of thallium in the real sample was determined.
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Mathematical Modelling of Biosensing Platforms Applied for Environmental Monitoring. CHEMOSENSORS 2021. [DOI: 10.3390/chemosensors9030050] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
In recent years, mathematical modelling has known an overwhelming integration in different scientific fields. In general, modelling is used to obtain new insights and achieve more quantitative and qualitative information about systems by programming language, manipulating matrices, creating algorithms and tracing functions and data. Researchers have been inspired by these techniques to explore several methods to solve many problems with high precision. In this direction, simulation and modelling have been employed for the development of sensitive and selective detection tools in different fields including environmental control. Emerging pollutants such as pesticides, heavy metals and pharmaceuticals are contaminating water resources, thus threatening wildlife. As a consequence, various biosensors using modelling have been reported in the literature for efficient environmental monitoring. In this review paper, the recent biosensors inspired by modelling and applied for environmental monitoring will be overviewed. Moreover, the level of success and the analytical performances of each modelling-biosensor will be discussed. Finally, current challenges in this field will be highlighted.
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Brotin T, Berthault P, Pitrat D, Mulatier JC. Selective Capture of Thallium and Cesium by a Cryptophane Soluble at Neutral pH. J Org Chem 2020; 85:9622-9630. [PMID: 32589033 DOI: 10.1021/acs.joc.0c00950] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
We report in this article the synthesis of an asymmetrical cryptophane derivative (possessing only C3-symmetry) bearing three phenol groups and three other carboxylic acid functions, each of these groups on the aromatic rings. Thanks to isothermal titration calorimetry experiments, we show that this compound binds large monovalent cations, such as Cs+ and Tl+, with a binding constant significantly lower than its congeners bearing a larger number of phenol groups grafted on the benzene rings. However, higher selectivity for Cs+ and Tl+ was observed with this compound since it does not show any affinity for other alkali cations. More importantly, due to the greater solubility of this derivative in pure water, we show for the first time that effective thallium(I) complexation takes place at neutral pH. This result demonstrates that cryptophane derivatives decorated with a higher number of phenol groups are promising host molecules for removing traces of thallium(I) from aqueous phases at neutral pH or above.
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Affiliation(s)
- Thierry Brotin
- University Claude Bernard Lyon 1, ENS de Lyon, CNRS UMR 5182, Laboratoire de Chimie, 69342 Lyon, France
| | - Patrick Berthault
- University Paris Saclay, CEA, CNRS, Nanoscience and Innovation for Materials, Biomedicine and Energy, 91191 Gif-sur-Yvette, France
| | - Delphine Pitrat
- University Claude Bernard Lyon 1, ENS de Lyon, CNRS UMR 5182, Laboratoire de Chimie, 69342 Lyon, France
| | - Jean-Christophe Mulatier
- University Claude Bernard Lyon 1, ENS de Lyon, CNRS UMR 5182, Laboratoire de Chimie, 69342 Lyon, France
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Zhao Z, Xiong Y, Cheng X, Hou X, Yang Y, Tian Y, You J, Xu L. Adsorptive removal of trace thallium(I) from wastewater: A review and new perspectives. JOURNAL OF HAZARDOUS MATERIALS 2020; 393:122378. [PMID: 32120216 DOI: 10.1016/j.jhazmat.2020.122378] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Revised: 02/21/2020] [Accepted: 02/21/2020] [Indexed: 06/10/2023]
Abstract
Thallium is an emerging pollutant reported in wastewater along with the increasing mining and smelting of thallium-containing ores in recent years. The complete removal of Tl(I) from wastewater is of significant emergency due to its high toxicity and mobility, however, Tl(I) removal is always confronted with numerous technical difficulties because of the extremely low Tl(I) concentration in wastewater and the disturbances of many accompanying impurity ions. Adsorption is currently the most widely used method for Tl(I) removal on industrial scale and varied kinds of adsorbents such as Prussian blue analogues, biosorbents, and metal oxides have been developed. However, the adsorption process of Tl(I) is always affected by the co-existing cations, resulting in low Tl(I) removal efficiency. Recently, the development of a variety of novel adsorbents or ion sensors based on macrocyclic compounds for enrichment and accurate determination of trace Tl(I) in aqueous solutions exhibits great potential for application in Tl(I) removal from wastewater with high selectivity and process efficiency. This paper provides an overview of the adsorption methods for Tl(I) removal from wastewater with emphasis on complexation properties between varied types of adsorbents and Tl(I). Future directions of research and development of adsorptive Tl(I) removal from industrial wastewater are proposed.
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Affiliation(s)
- Zhuo Zhao
- School of Metallurgical Engineering, Anhui University of Technology, Ma'anshan, 243032, PR China
| | - Yanhang Xiong
- School of Metallurgical Engineering, Anhui University of Technology, Ma'anshan, 243032, PR China
| | - Xiankun Cheng
- School of Metallurgical Engineering, Anhui University of Technology, Ma'anshan, 243032, PR China
| | - Xue Hou
- School of Metallurgical Engineering, Anhui University of Technology, Ma'anshan, 243032, PR China
| | - Yongxiang Yang
- Department of Materials Science and Engineering, Delft University of Technology, Delft, 2628CD, the Netherlands
| | - Yongpan Tian
- School of Metallurgical Engineering, Anhui University of Technology, Ma'anshan, 243032, PR China
| | - Jinglin You
- State Key Laboratory of Advanced Special Steel, Shanghai University, Shanghai, 200444, PR China
| | - Liang Xu
- School of Metallurgical Engineering, Anhui University of Technology, Ma'anshan, 243032, PR China; State Key Laboratory of Advanced Special Steel, Shanghai University, Shanghai, 200444, PR China.
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Tajik S, Beitollahi H, Nejad FG, Safaei M, Zhang K, Van Le Q, Varma RS, Jang HW, Shokouhimehr M. Developments and applications of nanomaterial-based carbon paste electrodes. RSC Adv 2020; 10:21561-21581. [PMID: 35518767 PMCID: PMC9054518 DOI: 10.1039/d0ra03672b] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Accepted: 05/27/2020] [Indexed: 01/22/2023] Open
Abstract
This review summarizes the progress that has been made in the past ten years in the field of electrochemical sensing using nanomaterial-based carbon paste electrodes. Following an introduction into the field, a first large section covers sensors for biological species and pharmaceutical compounds (with subsections on sensors for antioxidants, catecholamines and amino acids). The next section covers sensors for environmental pollutants (with subsections on sensors for pesticides and heavy metal ions). Several tables are presented that give an overview on the wealth of methods (differential pulse voltammetry, square wave voltammetry, amperometry, etc.) and different nanomaterials available. A concluding section summarizes the status, addresses future challenges, and gives an outlook on potential trends. This review summarizes the progress that has been made in the past ten years in the field of electrochemical sensing using nanomaterial-based carbon paste electrodes.![]()
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Affiliation(s)
- Somayeh Tajik
- Research Center for Tropical and Infectious Diseases
- Kerman University of Medical Sciences
- Kerman
- Iran
| | - Hadi Beitollahi
- Environment Department
- Institute of Science and High Technology and Environmental Sciences
- Graduate University of Advanced Technology
- Kerman
- Iran
| | - Fariba Garkani Nejad
- Environment Department
- Institute of Science and High Technology and Environmental Sciences
- Graduate University of Advanced Technology
- Kerman
- Iran
| | - Mohadeseh Safaei
- Environment Department
- Institute of Science and High Technology and Environmental Sciences
- Graduate University of Advanced Technology
- Kerman
- Iran
| | - Kaiqiang Zhang
- Jiangsu Key Laboratory of Advanced Organic Materials
- Key Laboratory of Mesoscopic Chemistry of MOE
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing
| | - Quyet Van Le
- Institute of Research and Development
- Duy Tan University
- Da Nang 550000
- Vietnam
| | - Rajender S. Varma
- Regional Centre of Advanced Technologies and Materials
- Department of Physical Chemistry
- Faculty of Science
- Palacky University
- 783 71 Olomouc
| | - Ho Won Jang
- Department of Materials Science and Engineering
- Research Institute of Advanced Materials
- Seoul National University
- Seoul 08826
- Republic of Korea
| | - Mohammadreza Shokouhimehr
- Department of Materials Science and Engineering
- Research Institute of Advanced Materials
- Seoul National University
- Seoul 08826
- Republic of Korea
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Shah A, Nisar A, Khan K, Nisar J, Niaz A, Ashiq MN, Akhter MS. Amino acid functionalized glassy carbon electrode for the simultaneous detection of thallium and mercuric ions. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2019.134658] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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10
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Hussain MM, Asiri AM, Arshad MN, Rahman MM. A Thallium Ion Sensor Development Based on the Synthesized (E)‐N′‐(Methoxybenzylidene)‐4‐ Methylbenzenesulfonohydrazide Derivatives: Environmental Sample Analysis. ChemistrySelect 2019. [DOI: 10.1002/slct.201902193] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Mohammad Musarraf Hussain
- Chemistry DepartmentFaculty of ScienceKing Abdulaziz University Jeddah 21589, P.O. Box 80203 Saudi Arabia
- Center of Excellence for Advanced Materials Research (CEAMR)King Abdulaziz University Jeddah 21589, P.O. Box 80203 Saudi Arabia
- Department of PharmacyFaculty of Life and Earth SciencesJagannath University Dhaka- 1100, Bangladesh
| | - Abdullah M. Asiri
- Chemistry DepartmentFaculty of ScienceKing Abdulaziz University Jeddah 21589, P.O. Box 80203 Saudi Arabia
- Center of Excellence for Advanced Materials Research (CEAMR)King Abdulaziz University Jeddah 21589, P.O. Box 80203 Saudi Arabia
| | - Muhammad Nadeem Arshad
- Chemistry DepartmentFaculty of ScienceKing Abdulaziz University Jeddah 21589, P.O. Box 80203 Saudi Arabia
- Center of Excellence for Advanced Materials Research (CEAMR)King Abdulaziz University Jeddah 21589, P.O. Box 80203 Saudi Arabia
| | - Mohammed M. Rahman
- Chemistry DepartmentFaculty of ScienceKing Abdulaziz University Jeddah 21589, P.O. Box 80203 Saudi Arabia
- Center of Excellence for Advanced Materials Research (CEAMR)King Abdulaziz University Jeddah 21589, P.O. Box 80203 Saudi Arabia
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11
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Applications of macrocyclic compounds for electrochemical sensors to improve selectivity and sensitivity. J INCL PHENOM MACRO 2019. [DOI: 10.1007/s10847-019-00934-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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12
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Domańska K, Tyszczuk-Rotko K. Integrated three-electrode screen-printed sensor modified with bismuth film for voltammetric determination of thallium(I) at the ultratrace level. Anal Chim Acta 2018; 1036:16-25. [PMID: 30253827 DOI: 10.1016/j.aca.2018.06.078] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Revised: 06/19/2018] [Accepted: 06/29/2018] [Indexed: 10/28/2022]
Abstract
In the present paper, for the first time, the integrated three-electrode screen-printed sensor with in situ plated bismuth film carbon working electrode was applied for the ultratrace determination of thallium(I) (Tl(I)). Under optimized conditions extremely low limits of detection were reached, 8.47 × 10-10 and 6.71 × 10-12 mol L-1 for the deposition times of 60 s and 300 s, respectively. The influences of foreign metal ions and surfactants on the voltammetric signal of thallium in natural samples were minimized using 1 × 10-5 mol L-1 EDTA and Amberlite XAD-7 resin added to the buffer solution (CH3COONH4, CH3COOH and NH4Cl) of pH = 4.6 ± 0.1. The developed voltammetric method with integrated three-electrode screen-printed sensor was validated with use of certified reference materials (surface, rain and natural water) and can be in future applied to field analyses of Tl(I).
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Affiliation(s)
- K Domańska
- Department of Analytical Chemistry and Instrumental Analysis, Faculty of Chemistry, Maria Curie-Skłodowska University, 20-031, Lublin, Poland
| | - K Tyszczuk-Rotko
- Department of Analytical Chemistry and Instrumental Analysis, Faculty of Chemistry, Maria Curie-Skłodowska University, 20-031, Lublin, Poland.
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Voltammetric determination of metal ions beyond mercury electrodes. A review. Anal Chim Acta 2017; 990:11-53. [DOI: 10.1016/j.aca.2017.07.069] [Citation(s) in RCA: 105] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Revised: 07/24/2017] [Accepted: 07/29/2017] [Indexed: 02/01/2023]
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Ultra-trace determination of thallium(I) using a nanocomposite consisting of magnetite, halloysite nanotubes and dibenzo-18-crown-6 for preconcentration prior to its quantitation by ET-AAS. Mikrochim Acta 2017. [DOI: 10.1007/s00604-016-2040-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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15
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González-Calabuig A, Guerrero D, Serrano N, del Valle M. Simultaneous Voltammetric Determination of Heavy Metals by Use of Crown Ether-modified Electrodes and Chemometrics. ELECTROANAL 2015. [DOI: 10.1002/elan.201500512] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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16
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Fazelirad H, Taher MA. Simultaneous column preconcentration of ultra trace amounts of heavy metals with nano-adsorbent in some environmental and biological samples. ENVIRONMENTAL TECHNOLOGY 2015; 37:300-307. [PMID: 26149951 DOI: 10.1080/09593330.2015.1068871] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Accepted: 06/29/2015] [Indexed: 06/04/2023]
Abstract
In the present investigation, multi-walled carbon nanotubes impregnated by 1,4,10,13-tetraoxa-7,16-diazacyclooctadecane were prepared and applied as adsorbent for the simultaneous separation of Bi(III), Cu(II), Cd(II) and Pb(II) ions prior to their determination by electrothermal atomic absorption spectrometry. The following analytical figures of merit were determined for bismuth, copper, cadmium and lead, respectively: enrichment factors of 168, 134, 111 and 146, assay precisions of ±4.6%, ±4.8%, ±5.3% and ±5.0% and detection limits of 11.3, 3.7, 0.5 and 0.3 ng L(-1). The method was successfully applied for the determination of heavy metals in environmental, biological and certified reference materials.
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Affiliation(s)
- Hamid Fazelirad
- a Young Researchers and Elite Club, Kerman Branch , Islamic Azad University , Kerman , Iran
| | - Mohammad Ali Taher
- b Department of Chemistry , Shahid Bahonar University of Kerman , Kerman , Iran
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17
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Crown ether-modified electrodes for the simultaneous stripping voltammetric determination of Cd(II), Pb(II) and Cu(II). Talanta 2015; 138:130-137. [DOI: 10.1016/j.talanta.2015.01.044] [Citation(s) in RCA: 76] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2014] [Revised: 01/23/2015] [Accepted: 01/31/2015] [Indexed: 11/23/2022]
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18
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Nasiri-Majd M, Taher MA, Fazelirad H. Synthesis and application of nano-sized ionic imprinted polymer for the selective voltammetric determination of thallium. Talanta 2015; 144:204-9. [PMID: 26452811 DOI: 10.1016/j.talanta.2015.05.058] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2015] [Revised: 05/22/2015] [Accepted: 05/24/2015] [Indexed: 10/23/2022]
Abstract
A simple and selective thallium imprinted polymer was synthesized as a chemical modifier for the stripping voltammetric determination of Tl ions. The polymerization process (bulk polymerization) was performed with ethylene glycol dimethacrylate (crosslinking monomer) and methacrylic acid (functional monomer) in the presence of 2,2'-azobis(isobutyronitrile) (initiator). The electrochemical method was based on the accumulation of thallium ions at the surface of a modified carbon paste electrode with Tl imprinted polymer and multi-walled carbon nanotubes. After preconcentration process, the voltammetric measurements were carried out via electrolysis of the accumulated Tl ions in a closed circuit. Under the optimized conditions, a linear response range from 3.0 to 240 ng mL(-1) was obtained. The detection limit and RSD (100.0 ng mL(-1) of Tl) were calculated as 0.76 ng mL(-1) and ±2.7%, respectively. The suggested modified electrode has good characteristics such as excellent selectivity, high sensitivity and suitable stability. Also, it was successfully applied for the electrochemical determination of trace amounts of Tl in the environmental and biological samples.
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Affiliation(s)
| | - Mohammad Ali Taher
- Department of Chemistry, Shahid Bahonar University of Kerman, Kerman, Iran
| | - Hamid Fazelirad
- Young Researchers and Elite Club, Kerman Branch, Islamic Azad University, Kerman, Iran
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19
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Electrochemical Deposition and Dissolution of Thallium from Sulfate Solutions. Int J Anal Chem 2015; 2015:357514. [PMID: 26064120 PMCID: PMC4433681 DOI: 10.1155/2015/357514] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2014] [Accepted: 04/06/2015] [Indexed: 12/01/2022] Open
Abstract
The electrochemical behavior of thallium was studied on glassy carbon electrodes in sulfate solutions. Cyclic voltammetry was used to study the kinetics of the electrode processes and to determine the nature of the limiting step of the cathodic reduction of thallium ions. According to the dependence of current on stirring rate and scan rate, this process is diffusion limited. Chronocoulometry showed that the electrodeposition can be performed with a current efficiency of up to 96% in the absence of oxygen.
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Cheraghi S, Taher MA, Fazelirad H. Voltammetric determination of silver with a new multi-walled carbon nanotube modified paste electrode. RUSS J ELECTROCHEM+ 2015. [DOI: 10.1134/s1023193514110032] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Rutyna I, Korolczuk M. Determination of Ultratrace Thallium(I) by Anodic Stripping Voltammetry at Bismuth Film Electrodes Following Double Deposition and Stripping Steps. ELECTROANAL 2014. [DOI: 10.1002/elan.201400483] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Seilkhanova G, Ussipbekova Y, Berezovskiy A, Kurbatov A. Electrochemical behavior of thallium in various electrolytes. CHEMICAL BULLETIN OF KAZAKH NATIONAL UNIVERSITY 2014. [DOI: 10.15328/chemb_2014_247-52] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Taher MA, Daliri Z, Fazelirad H. Simultaneous extraction and preconcentration of copper, silver and palladium with modified alumina and their determination by electrothermal atomic absorption spectrometry. CHINESE CHEM LETT 2014. [DOI: 10.1016/j.cclet.2013.12.025] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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