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Takeda N, Fukushi K, Okuyama A, Takahashi Y. Solid-liquid partitioning and speciation of Pb(II) and Cd(II) on goethite under high pH conditions, as examined by subnanomolar heavy metal analysis, X-ray absorption spectroscopy, and surface complexation modeling. CHEMOSPHERE 2024:142766. [PMID: 38969214 DOI: 10.1016/j.chemosphere.2024.142766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Revised: 07/02/2024] [Accepted: 07/03/2024] [Indexed: 07/07/2024]
Abstract
The adsorption of heavy metals on iron oxides generally increases with pH and is almost complete at neutral to slightly alkaline pH. However, almost complete adsorption on a linear scale does not imply sufficient removal of the heavy metals in terms of their toxicity. Here, we elucidated the chemical reactions that determine the solid-liquid partitioning of Pb(II) and Cd(II) on goethite at high pH. While the removal of both heavy metals was almost complete on a linear scale above pH 7 for Pb(II) and pH 9 for Cd(II), the dissolved metal concentrations decreased on a logarithmic scale with pH, reaching minima at around pH 10 for Pb(II) and pH 10-11 for Cd(II), and then they increased with pH thereafter. The XAFS spectra of Pb(II)- or Cd(II)-adsorbed goethite prepared at pH > 11 were almost the same as those at neutral pH, suggesting that removal of the heavy metals from solution was achieved by a single adsorption reaction over the entire pH range. Based on the observed macroscopic and microscopic adsorption behaviors at high pH, a robust surface complexation model was developed to predict the solid-liquid partitioning of divalent heavy metals over the entire pH range.
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Affiliation(s)
- Natsumi Takeda
- Division of Natural System, Graduate School of Natural Science, Kanazawa University, Kakuma, Kanazawa, Ishikawa 920-1192, Japan
| | - Keisuke Fukushi
- Institute of Nature and Environmental Technology, Kanzawa University, Kakuma, Kanazawa, Ishikawa 920-1192, Japan.
| | - Akihiro Okuyama
- Division of Natural System, Graduate School of Natural Science, Kanazawa University, Kakuma, Kanazawa, Ishikawa 920-1192, Japan
| | - Yoshio Takahashi
- Department of Earth and Planetary Science, The University of Tokyo, 7-3-1 Hongo, Tokyo, 113-0033, Japan
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2
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Darestani-Farahani M, Mendoza Montealegre I, Tavakkoli Gilavan M, Kirby T, Selvaganapathy PR, Kruse P. A highly sensitive ion-selective chemiresistive sensor for online monitoring of lead ions in water. Analyst 2024; 149:2915-2924. [PMID: 38578133 DOI: 10.1039/d4an00159a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/06/2024]
Abstract
Dissolved lead is a serious but common health hazard in drinking water, yet there is still no practical way to monitor its levels continuously in the distribution system or at the point of use. Here we propose using a lead-selective membrane on top of a chemiresistive device to continuously measure Pb2+ ion concentrations in real time. The detection limit was lowered by stabilizing the surface of the resistive film with sodium hydroxide and 15-crown-5 ether and optimizing the sensor geometry to maximize the effective surface area. The detection mechanism is based on the complexation of the Pb2+ ions by the lead ionophores within the membrane, thus modulating the interactions between the ionophores and the chemiresistive film. The limit of detection of the fabricated devices was reliably below 2 μg L-1, with concentrations up to 3 mg L-1 routinely quantifiable over several measurement cycles. The chemiresistive sensors can thus achieve lower detection limits than potentiometric devices while being more robust and simpler to fabricate by omitting the reference electrode. Ion-selective membrane-covered chemiresistors can therefore be deployed to continuously monitor drinking water sources and detect harmful levels of lead in real time.
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Affiliation(s)
- Maryam Darestani-Farahani
- Department of Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4M1, Canada.
| | - Isabella Mendoza Montealegre
- Department of Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4M1, Canada.
| | - Mehraneh Tavakkoli Gilavan
- School of Biomedical Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L7, Canada
| | - Thomas Kirby
- Department of Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4M1, Canada.
| | - Ponnambalam Ravi Selvaganapathy
- School of Biomedical Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L7, Canada
- Department of Mechanical Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L7, Canada
| | - Peter Kruse
- Department of Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4M1, Canada.
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3
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Jarczewska M, Sokal M, Olszewski M, Malinowska E. Studies on the Aptasensor Miniaturization for Electrochemical Detection of Lead Ions. BIOSENSORS 2024; 14:110. [PMID: 38392029 PMCID: PMC10886534 DOI: 10.3390/bios14020110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Revised: 02/11/2024] [Accepted: 02/17/2024] [Indexed: 02/24/2024]
Abstract
Lead poses severe effects on living organisms, and since Pb2+ ions tend to accumulate in different organs, it is crucial to monitor Pb2+ concentration in samples such as water and soil. One of the approaches is the utilization of biosensors combined with aptamer-based layers for the electrochemical detection of lead ions. Herein, we present the studies of applying miniaturized screen-printed transducers as solid surfaces to fabricate aptamer layers. As the research is the direct continuation of our previous studies regarding the use of gold disk electrodes, the working parameters of elaborated aptasensors were defined, including the range of linear response (10-100 nM), selectivity as well as stability, regeneration, and feasibility of application for the analysis of real samples. This was achieved using voltammetric techniques including cyclic and square-wave voltammetry in the presence of methylene blue redox indicator.
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Affiliation(s)
- Marta Jarczewska
- Chair of Medical Biotechnology, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland
| | - Marta Sokal
- Chair of Medical Biotechnology, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland
| | - Marcin Olszewski
- Chair of Drug and Cosmetics Biotechnology, Faculty of Chemistry, Warsaw University of Technology, Koszykowa 75, 00-664 Warsaw, Poland;
| | - Elzbieta Malinowska
- Chair of Medical Biotechnology, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland
- Center for Advanced Materials and Technologies CEZAMAT, Warsaw University of Technology, 19 Poleczki, 02-822 Warsaw, Poland
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4
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Madawala H, Puri SR, Weaver D, Kim J. Pb 2+-Selective Nanoemulsion-Integrated Single-Entity Electrochemistry for Ultrasensitive Sensing of Blood Lead. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:3004-3014. [PMID: 38294191 DOI: 10.1021/acs.langmuir.3c03138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2024]
Abstract
Unequivocally, Pb2+ as a harmful substance damaging children's brain and nerve systems, thereby causing behavior and learning disabilities, should be detected much lower than the elevated blood lead for children, 240 nM, endorsed by US CDC considering the unknown neurotoxic effects, yet the ultralow detection limit up to sub-ppb level remains a challenge due to the intrinsically insufficient sensitivity in the current analytical techniques. Here, we present nanoemulsion (NE)-integrated single-entity electrochemistry (NI-SEE) toward ultrasensitive sensing of blood lead using Pb-ion-selective ionophores inside a NE, i.e., Pb2+-selective NE. Through the high thermodynamic selectivity between Pb2+ and Pb-ionophore IV, and the extremely large partition coefficient for the Pb2+-Pb-ionophore complex inside NEs, we modulate the selectivity and sensitivity of NI-SEE for Pb2+ sensing up to an unprecedentedly low detection limit, 20 ppt in aqueous solutions, and lower limit of quantitation, 40 ppb in blood serums. This observation is supported by molecular dynamics simulations, which clearly corroborate intermolecular interactions, e.g., H-bonding and π*-n, between the aromatic rings of Pb-ionophore and lone pair electrons of oxygen in dioctyl sebacate (DOS), plasticizers of NEs, subsequently enhancing the current intensity in NI-SEE. Moreover, the highly sensitive sensing of Pb2+ is enabled by the appropriate suppression of hydroxyl radical formation during NI-SEE under a cathodic potential applied to a Pt electrode. Overall, the experimentally demonstrated NI-SEE approach and the results position our new sensing technology as potential sensors for practical environmental and biomedical applications as well as a platform to interrogate the stoichiometry of target ion-ionophore recognition inside a NE as nanoreactors.
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Affiliation(s)
- Hiranya Madawala
- Department of Chemistry, University of Rhode Island, Kingston, Rhode Island 02881, United States
| | - Surendra Raj Puri
- Department of Chemistry, University of Rhode Island, Kingston, Rhode Island 02881, United States
| | - Delaney Weaver
- Department of Chemistry, University of Rhode Island, Kingston, Rhode Island 02881, United States
| | - Jiyeon Kim
- Department of Chemistry, University of Rhode Island, Kingston, Rhode Island 02881, United States
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5
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Sarvestani MRJ, Madrakian T, Afkhami A, Ajdari B. Applicability of a synthesized melamine based covalent organic framework as a novel ionophore for the potentiometric determination of mercury (II): Computational and experimental studies. Microchem J 2023. [DOI: 10.1016/j.microc.2023.108483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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6
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Hussein OG, Ahmed DA, Abdelkawy M, Rezk MR, Mahmoud AM, Rostom Y. Novel solid-contact ion-selective electrode based on a polyaniline transducer layer for determination of alcaftadine in biological fluid. RSC Adv 2023; 13:7645-7655. [PMID: 36908536 PMCID: PMC9993128 DOI: 10.1039/d3ra00597f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2023] [Accepted: 03/02/2023] [Indexed: 03/11/2023] Open
Abstract
Fabrication of a novel ion selective electrode for determining alcaftadine was achieved. The glassy carbon electrode (GCE) was utilized as a substrate in fabrication of an electrochemical sensor containing polyaniline (PANI) as an ion-to-electron transducer layer. A PVC polymeric matrix and nitrophenyl-octyl-ether were employed in designing the ion-sensing membrane (ISM). Potential stability was improved and minimization of electrical signal drift was achieved for inhibition of water layer formation at the electrode interface. Potential stability was achieved by inclusion of PANI between the electronic substrate and the ion-sensing membrane. The sensor's performance was evaluated following IUPAC recommendations. The sensor dynamic linear range was from 1.0 × 10-2 to 1.0 × 10-6 mol L-1 and it had a 6.3 × 10-7 mol L-1 detection limit. The selectivity and capabilities of the formed alcaftadine sensor were tested in the presence of its pharmaceutical formulation excipients as well as its degradation products. Additionally, the sensor was capable of quantifying the studied drug in a rabbit aqueous humor. Method's greenness profile was evaluated by the means of Analytical Greenness (AGREE) metric assessment tool.
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Affiliation(s)
- Ola G Hussein
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, Future University in Egypt Cairo Egypt
| | - Dina A Ahmed
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, Future University in Egypt Cairo Egypt
| | - Mohamed Abdelkawy
- Analytical Chemistry Department, Faculty of Pharmacy, Cairo University Kasr El-Aini Street Cairo 11562 Egypt
| | - Mamdouh R Rezk
- Analytical Chemistry Department, Faculty of Pharmacy, Cairo University Kasr El-Aini Street Cairo 11562 Egypt
| | - Amr M Mahmoud
- Analytical Chemistry Department, Faculty of Pharmacy, Cairo University Kasr El-Aini Street Cairo 11562 Egypt
| | - Yasmin Rostom
- Analytical Chemistry Department, Faculty of Pharmacy, Cairo University Kasr El-Aini Street Cairo 11562 Egypt
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7
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Lazo-Fraga AR, Hernández MP, Díaz-García AM, Viltres-Portales M, Estévez-Hernández O. 3,3-Disubstituted 1-acylthioureas as ionophores for Pb(II)-ion selective electrodes: physical and chemical characterization of the sensing membranes. PHOSPHORUS SULFUR 2022. [DOI: 10.1080/10426507.2022.2152814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Ana Rosa Lazo-Fraga
- Instituto de Ciencia y Tecnología de Materiales (IMRE), Universidad de La Habana, Vedado, La Habana, Cuba
| | - Mayra Paulina Hernández
- Instituto de Ciencia y Tecnología de Materiales (IMRE), Universidad de La Habana, Vedado, La Habana, Cuba
| | | | - Marcia Viltres-Portales
- Instituto de Ciencia y Tecnología de Materiales (IMRE), Universidad de La Habana, Vedado, La Habana, Cuba
| | - Osvaldo Estévez-Hernández
- Instituto de Ciencia y Tecnología de Materiales (IMRE), Universidad de La Habana, Vedado, La Habana, Cuba
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8
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Cui Y, Wang R, Brady B, Wang X. Fully inkjet-printed paper-based Pb 2+ optodes for water analysis without interference from the chloramine disinfectant. Anal Bioanal Chem 2022; 414:7585-7595. [PMID: 35997814 DOI: 10.1007/s00216-022-04286-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 08/08/2022] [Accepted: 08/12/2022] [Indexed: 12/29/2022]
Abstract
We developed a paper-based colorimetric sensor for facile and cost-effective detection of Pb2+ in drinking and environmental water samples. The Pb2+ ion-selective optodes are fabricated by inkjet printing of ionophore, chromoionophore, and ion exchanger on cellulose paper. Pb2+ in water samples induces deprotonation of the pH chromoionophore and changes the optode color, which is acquired and analyzed by a smartphone. The paper-based optode without any plasticizer or polymer has a dynamic range and selectivity comparable to those of traditional optodes using PVC polymer and/or plasticizer. Furthermore, the response time of the plasticizer/polymer-free paper-based optode is much shorter than those of plasticized PVC-based optodes on paper and glass (5 min vs. 15 and 50 min). Moreover, the plasticizer/polymer-free optode preserves the water-wicking capability of porous cellulose paper, allowing for the design of pump-free microfluidic devices. Chloramine, a widely used disinfectant in drinking water, was found to be a strong and generic interference species for heavy metal ion detection via ion-selective optodes. A fully inkjet-printed lateral-flow paper-based device consisting of a sodium thiosulfate-based chloramine elimination zone and a plasticizer/polymer-free sensing zone was designed for Pb2+ detection in tap water disinfected by chloramine. The dynamic range of the Pb2+ sensor may be shifted from the current 10-6 to 10-5 M to lower concentrations by using stronger ionophores, but this work lays a foundation for the design of paper-based heavy metal ion sensors without detrimental interference from disinfectants.
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Affiliation(s)
- Yu Cui
- Institute for Smart Materials & Engineering, School of Chemistry and Chemical Engineering, University of Jinan, Jinan, Shandong, 250022, People's Republic of China
| | - Renjie Wang
- Department of Chemistry, Virginia Commonwealth University, Richmond, VA, 23284, USA.
| | - Brock Brady
- Department of Chemistry, Virginia Commonwealth University, Richmond, VA, 23284, USA
| | - Xuewei Wang
- Department of Chemistry, Virginia Commonwealth University, Richmond, VA, 23284, USA.
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9
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Özbek O, Gezegen H, Cetin A, Isildak Ö. A Potentiometric Sensor for the Determination of Pb(II) Ions in Different Environmental Samples. ChemistrySelect 2022. [DOI: 10.1002/slct.202202494] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Oguz Özbek
- Zonguldak Bülent Ecevit University Science and Technology Application and Research Center 67600 Zonguldak Turkey
| | - Hayreddin Gezegen
- Sivas Cumhuriyet University Faculty of Health Sciences Department of Nutrition and Dietetics 58140 Sivas Turkey
| | - Alper Cetin
- Zonguldak Bülent Ecevit University Faculty of Science and Arts Department of Molecular Biology and Genetics 67100 Zonguldak Turkey
| | - Ömer Isildak
- Tokat Gaziosmanpasa University Faculty of Science and Arts Department of Chemistry 60250 Tokat Turkey
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10
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Ultrathin ion-selective membranes for trace detection of lead, copper and silver ions. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.140870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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11
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González-Quintela M, Viltres-Portales M, Díaz-García AM, Bustamante-Sánchez M, Sánchez-Díaz G, Lazo-Fraga AR, Estévez-Hernández O. On the analytical response of lead(II) selective electrodes using 1-aroyl-3,3-dimethylthioureas as ionophores: membrane analysis and quantum chemical calculations. PHOSPHORUS SULFUR 2022. [DOI: 10.1080/10426507.2022.2085270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- M. González-Quintela
- Instituto de Ciencia y Tecnología de Materiales (IMRE), Universidad de La Habana, La Habana, Cuba
| | - M. Viltres-Portales
- Instituto de Ciencia y Tecnología de Materiales (IMRE), Universidad de La Habana, La Habana, Cuba
| | | | - M. Bustamante-Sánchez
- Instituto de Ciencia y Tecnología de Materiales (IMRE), Universidad de La Habana, La Habana, Cuba
| | - G. Sánchez-Díaz
- Faculty of Science, Department of Chemistry & Chemical Biology, MacMaster University, Hamilton, Canada
| | - A. R. Lazo-Fraga
- Instituto de Ciencia y Tecnología de Materiales (IMRE), Universidad de La Habana, La Habana, Cuba
| | - O. Estévez-Hernández
- Instituto de Ciencia y Tecnología de Materiales (IMRE), Universidad de La Habana, La Habana, Cuba
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12
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Han J, Pei L, Du Y, Zhu Y. Tripolycyanamide-2,4,6-triformyl pyrogallol covalent organic frameworks with many coordination sites for detection and removal of heavy metal ions. J IND ENG CHEM 2022. [DOI: 10.1016/j.jiec.2021.11.027] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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13
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Kulkarni BB, Suvina V, Balakrishna RG, Nagaraju DH, Jagadish K. 1D GNR‐PPy Composite for Remarkably Sensitive Detection of Heavy Metal Ions in Environmental Water**. ChemElectroChem 2022. [DOI: 10.1002/celc.202101269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Bhakti B. Kulkarni
- Centre for Nano and Material Sciences Jain University Jain Global Campus, Kanakapura Bangalore 562112, Karnataka India
| | - V. Suvina
- Centre for Nano and Material Sciences Jain University Jain Global Campus, Kanakapura Bangalore 562112, Karnataka India
| | - R. Geetha Balakrishna
- Centre for Nano and Material Sciences Jain University Jain Global Campus, Kanakapura Bangalore 562112, Karnataka India
| | - D. H. Nagaraju
- Centre for Nano and Material Sciences Jain University Jain Global Campus, Kanakapura Bangalore 562112, Karnataka India
| | - Kusuma Jagadish
- Centre for Nano and Material Sciences Jain University Jain Global Campus, Kanakapura Bangalore 562112, Karnataka India
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14
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Akl ZF. Rapid electrochemical sensor for uranium( vi) assessment in aqueous media. RSC Adv 2022; 12:20147-20155. [PMID: 35919617 PMCID: PMC9272783 DOI: 10.1039/d2ra02619h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Accepted: 07/04/2022] [Indexed: 01/01/2023] Open
Abstract
The significance of reliable monitoring of uranium levels in water recourses calls for the development of time-saving, robust, and accurate methods for its estimation. In this view, the current study describes the design and analytical parameters of a potentiometric membrane sensor for uranium(vi) ions. The sensor is based on a new Schiff base derivative, as an ionophore, that was synthesized and structurally characterized by elemental, FTIR, and 1HNMR analyses. The impact of the membrane constituents was studied and the membrane composition of PVC (32.50) : o-NPOE (65.00) : ionophore (2.00) : KTpClPB (0.50) (%, w/w) achieved the optimal performance. A Nernestian response was observed for uranium(vi) ions within the concentration range 1.00 × 10−6 to 1.00 × 10−1 mol L−1. The sensor revealed a low detection limit of 3.90 × 10−7 mol L−1 with satisfactory reproducibility. Stable and reproducible potentials were obtained within a short time (9 s) over the pH range 2.10–4.21. The impact of possible competing ions was investigated and the selectivity coefficients revealed appropriate selectivity for uranium(vi) ions over various cations without significant interference. The sensor's performance was examined by determining the amount of uranium(vi) in water samples and the results showed no significant differences from those obtained by the ICP-OES method. A new Schiff base was synthesized and applied as ionophore to construct potentiometric sensor for uranium(vi) determination.![]()
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Affiliation(s)
- Zeinab F. Akl
- Egyptian Atomic Energy Authority, P.O. Box 11762, Cairo, Egypt
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15
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Lisak G. Reliable environmental trace heavy metal analysis with potentiometric ion sensors - reality or a distant dream. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 289:117882. [PMID: 34364114 DOI: 10.1016/j.envpol.2021.117882] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2021] [Revised: 07/13/2021] [Accepted: 07/29/2021] [Indexed: 06/13/2023]
Abstract
Over two decades have passed since polymeric membrane ion-selective electrodes were found to exhibit sufficiently lower detection limits. This in turn brought a great promise to measure trace level concentrations of heavy metals using potentiometric ion sensors at environmental conditions. Despite great efforts, trace analysis of heavy metals using ion-selective electrodes at environmental conditions is still not commercially available. This work will predominantly concentrate on summarizing and evaluating prospects of using potentiometric ion sensors in view of environmental determination of heavy metals in on-site and on-line analysis modes. Challenges associated with development of reliable potentiometric sensors to be operational in environmental conditions will be discussed and reasoning behind unsuccessful efforts to develop potentiometric on-site and on-line environmental ion sensors will be explored. In short, it is now clear that solely lowering the detection limit of the ion-selective electrodes does not guarantee development of successful sensors that would meet the requirement of environmental matrices over long term usage. More pressing challenges of the properties and the performance of the potentiometric sensors must be addressed first before considering extending their sensitivity to low analyte concentrations. These are, in order of importance, selectivity of the ion-selective membrane to main ion followed by the membrane resistance to parallel processes, such as water ingress to the ISM, light sensitivity, change in temperature, presence of gasses in solution and pH and finally resistance of the ion-selective membrane to fouling. In the future, targeted on-site and on-line environmental sensors should be developed, addressing specific environmental conditions. Thus, ion-selective electrodes should be developed with the intention to be suitable to the operational environmental conditions, rather than looking at universal sensor design validated in the idealized and simple sample matrices.
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Affiliation(s)
- Grzegorz Lisak
- School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore; Residues and Resource Reclamation Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, 1 Cleantech Loop, Singapore, 637141, Singapore.
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16
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Deng L, Zhai J, Du X, Xie X. Ionophore-Based Ion-Selective Nanospheres Based on Monomer-Dimer Conversion in the Near-Infrared Region. ACS Sens 2021; 6:1279-1285. [PMID: 33566586 DOI: 10.1021/acssensors.0c02577] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Here, we report ion-selective nanospheres with readout in the near-infrared (NIR) region in both fluorescence and absorbance modes. The nanospheres rely on an ionophore-mediated monomer-dimer conversion of an NIR transducer, DTTC. The DTTC monomer in the nanospheres emits fluorescence around 820 nm, while the dimer in the aqueous environment generates strong blue-shifted emission around 660 nm. With a lead ionophore, an unprecedented lower detection limit of 3 pM for Pb2+ was achieved, allowing us to determine Pb2+ levels in river water without diluting the sample. Also, the Cu2+-selective nanospheres showed a detection limit of 5 nM. Taking advantage of the biologically desired NIR window, blood potassium concentrations were also determined without a complicated sample pretreatment. The sensing process was explained with a theoretical model. The detection range was found finely adjustable by the amount of nanospheres used. Therefore, the nanospheres formed a highly selective, sensitive, versatile, and rapid analytical platform for metal-ion sensing.
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Affiliation(s)
- Li Deng
- Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Jingying Zhai
- Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology, Shenzhen 518055, China
| | - Xinfeng Du
- Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Xiaojiang Xie
- Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
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17
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Wang J, Wang L, Wang Y, Tsang DCW, Yang X, Beiyuan J, Yin M, Xiao T, Jiang Y, Lin W, Zhou Y, Liu J, Wang L, Zhao M. Emerging risks of toxic metal(loid)s in soil-vegetables influenced by steel-making activities and isotopic source apportionment. ENVIRONMENT INTERNATIONAL 2021; 146:106207. [PMID: 33197789 DOI: 10.1016/j.envint.2020.106207] [Citation(s) in RCA: 78] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 10/08/2020] [Accepted: 10/10/2020] [Indexed: 05/15/2023]
Abstract
Industrial activities tend to deteriorate adjacent agricultural lands due to accumulation of potentially toxic elements in soils and crops. However, better understanding of their distinctive source partitions and transfer process remains insufficient in steel-making area. The paper focuses on the pollution levels, health risks, and provenance identification of Tl, As, Pb, Cu, Ni, Co, Sb, Cd, Zn, Be, Cr, Fe, Mn, Mo, Sn, and V in common vegetables from different farmlands near a steel-making plant. The results showed that the Tl, As, Pb, Cd, Cr, Cu and Mn were of high-level contamination in soils and generally above the maximum permissible level (MPL). Calculation using hazard quotients (HQ) exhibited that consumption of the studied vegetables may entail significant health risks to residents, especially for children, resulting from the elevated contents of Tl, As and associated toxic elements. Calculation by binary mixing model using Pb isotopic compositions suggested that steel-making activities contributed to 35-80% of the contamination of Pb and As in vegetables. It is necessary to adopt appropriate remediation measures to mitigate the farmland contamination and ensure the food safety of the agricultural products.
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Affiliation(s)
- Jin Wang
- School of Environmental Science and Engineering, Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, Guangzhou 510006, China
| | - Lulu Wang
- School of Environmental Science and Engineering, Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, Guangzhou 510006, China
| | - Yuxuan Wang
- School of Environmental Science and Engineering, Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, Guangzhou 510006, China
| | - Daniel C W Tsang
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
| | - Xiao Yang
- Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
| | - Jingzi Beiyuan
- School of Environment and Chemical Engineering, Foshan University, Foshan, Guangdong, China
| | - Meiling Yin
- School of Environmental Science and Engineering, Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, Guangzhou 510006, China
| | - Tangfu Xiao
- School of Environmental Science and Engineering, Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, Guangzhou 510006, China
| | - Yanjun Jiang
- School of Environmental Science and Engineering, Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, Guangzhou 510006, China
| | - Wenli Lin
- School of Environmental Science and Engineering, Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, Guangzhou 510006, China
| | - Yuchen Zhou
- School of Environmental Science and Engineering, Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, Guangzhou 510006, China
| | - Juan Liu
- School of Environmental Science and Engineering, Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, Guangzhou 510006, China.
| | - Liang Wang
- Shandong Provincial Key Laboratory of Water and Soil Conservation and Environmental Protection, College of Resources and Environment, Linyi University, Linyi, China
| | - Min Zhao
- Shandong Provincial Key Laboratory of Water and Soil Conservation and Environmental Protection, College of Resources and Environment, Linyi University, Linyi, China
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Mao C, Yuan D, Wang L, Bakker E. Separating boundary potential changes at thin solid contact ion transfer voltammetric membrane electrodes. J Electroanal Chem (Lausanne) 2021. [DOI: 10.1016/j.jelechem.2020.114800] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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19
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Fan Y, Xu Z, Huang Y, Wang T, Zheng S, DePasquale A, Brüeckner C, Lei Y, Li B. Long-term continuous and real-time in situ monitoring of Pb(II) toxic contaminants in wastewater using solid-state ion selective membrane (S-ISM) Pb and pH auto-correction assembly. JOURNAL OF HAZARDOUS MATERIALS 2020; 400:123299. [PMID: 32947704 DOI: 10.1016/j.jhazmat.2020.123299] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2020] [Revised: 06/17/2020] [Accepted: 06/22/2020] [Indexed: 05/12/2023]
Abstract
Lead (Pb) contaminants in wastewater have inhibited microbial activities and thus exerted high energy consumption in wastewater treatment plants (WWTPs). Current Pb monitoring has been conducted ex situ and off line, unable to affect real-time proactive control and operation. This study targets the crucial challenge of better and faster Pb monitoring by developing novel mm-sized screen-printed solid-state ion-selective membrane (S-ISM) Pb sensors with low-cost, high accuracy and long-term durability and that enable real-time in situ monitoring of Pb(II) ion contamination down to low concentrations (15 ppb-960 ppb) in wastewater. An innovative pH auto-correction data-driven model was built to overcome the inextricable pH inferences on Pb(II) ISM sensors in wastewater. Electrochemical impedance spectroscopy (EIS) and cyclic voltammograms (CV) analysis showed (3,4-ethylenedioxythiophene, EDOT) deposited onto the mm-sized screen-printed carbon electrodes using electropolymerization effectively alleviated the interferences from dissolved oxygen and improved long-term stability in wastewater. Monte Carlo simulation of the nitrification process predicted that real-time, and high accurate in situ monitoring of Pb(II) in wastewater and swift feedback control could save ∼53 % of energy consumption by alleviating the errors from pH and DO impacts in WWTPs.
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Affiliation(s)
- Yingzheng Fan
- Department of Civil & Environmental Engineering, University of Connecticut, Storrs, CT 06269-3037, United States
| | - Zhiheng Xu
- Department of Civil & Environmental Engineering, University of Connecticut, Storrs, CT 06269-3037, United States
| | - Yuankai Huang
- Department of Civil & Environmental Engineering, University of Connecticut, Storrs, CT 06269-3037, United States
| | - Tianbao Wang
- Department of Civil & Environmental Engineering, University of Connecticut, Storrs, CT 06269-3037, United States
| | - Sikai Zheng
- Department of Civil & Environmental Engineering, University of Connecticut, Storrs, CT 06269-3037, United States
| | - Alex DePasquale
- Department of Civil & Environmental Engineering, University of Connecticut, Storrs, CT 06269-3037, United States
| | - Christian Brüeckner
- Department of Chemistry, University of Connecticut, Storrs, CT 06269-3060, United States
| | - Yu Lei
- Department of Chemical and Biomedical Engineering, University of Connecticut, Storrs, CT 06269-3222, United States
| | - Baikun Li
- Department of Civil & Environmental Engineering, University of Connecticut, Storrs, CT 06269-3037, United States.
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20
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Cao X, Ma R, Zhang Q, Wang W, Liao Q, Sun S, Zhang P, Liu X. The factors influencing sludge incineration residue (SIR)-based magnesium potassium phosphate cement and the solidification/stabilization characteristics and mechanisms of heavy metals. CHEMOSPHERE 2020; 261:127789. [PMID: 32739693 DOI: 10.1016/j.chemosphere.2020.127789] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 07/12/2020] [Accepted: 07/21/2020] [Indexed: 06/11/2023]
Abstract
Magnesium potassium phosphate cement (MKPC) is prepared from MgO and KH2PO4 through an acid-base reaction and has been widely used in the rapid repairs of building structures and the solidification/stabilization (S/S) of heavy metals (HMs). The use of sludge incineration residue (SIR) rich in phosphorus resources to prepare SIR-based MKPC can achieve the reclamation of SIR and efficient HM S/S. Herein, based on the exploration of the optimal MKPC magnesia/phosphate ratio (M/P), the effects of SIR and HMs on the performance of the matrix and its interaction mechanism were comprehensively investigated. The results indicated that the compressive strength of the SIR-based MKPC increased first and then decreased with the gradual increase of SIR incorporation; the optimal was reached at 40.31 MPa when the SIR incorporation was 5 wt%. The peak signal and crystal lattice of Pb2(PO4)3 indicated that there is a mixed effect between HMs (in SIR) and KH2PO4. The Visual MINTEQ analysis results also indicated that HMs are precipitated as HM phosphates. The formation of HM phosphates not only increases the M/P (with 30 wt% SIR, M/P increased by 0.019), affecting the microstructure and changing the compressive strength of the matrix, but also promotes the transformation of HMs from the bioavailable to the more stable residual forms. The residual forms of the six HMs were all above 84% after S/S. Therefore, the SIR-based MKPC preparation significantly immobilized the HMs; particularly, the leaching toxicities of Cu (96.6%) and Zn (96.3%) were alleviated.
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Affiliation(s)
- Xing Cao
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Rui Ma
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Qiushi Zhang
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Weibing Wang
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Qinxiong Liao
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Shichang Sun
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060, China; Research Center for Water Science and Environmental Engineering, Shenzhen University, 518055, China.
| | - Peixin Zhang
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Xiangli Liu
- Shenzhen Engineering Laboratory of Aerospace Detection and Imaging, Department of Materials Science and Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, China
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21
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Zayed M, Abbas AA, Mahmoud WH, Ali AE, Mohamed GG. Development and surface characterization of a bis(aminotriazoles) derivative based renewable carbon paste electrode for selective potentiometric determination of Cr(III) ion in real water samples. Microchem J 2020. [DOI: 10.1016/j.microc.2020.105478] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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22
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Kushwaha CS, Shukla SK. Potentiometric extractive sensing of lead ions over a nickel oxide intercalated chitosan-grafted-polyaniline composite. Dalton Trans 2020; 49:13862-13871. [PMID: 33006591 DOI: 10.1039/d0dt02687e] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The present research paper reports the extractive potentiometric sensing of lead ions over a chemically functionalized ternary nanocomposite of nickel oxide intercalated chitosan grafted polyaniline (NiO-in-CHIT-g-PANI) prepared by the in situ chemical polymerization and composite formation technique under optimized conditions. The structural, morphological, and physical properties of the composite material were investigated by Fourier transform infrared (FT-IR) spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM), and other suitable ASTM methods. The obtained analytical result suggests the formation of a porous hybrid composite matrix with better electrical conductivity ∼ 5.25 × 10-3 S cm-1, free interactive carbonyl sites, and evolved aligned crystallinity. Furthermore, a film of the synthesized composite was cast on ITO coated glass by the spin coating technique for potentiometric sensing and the recovery of adsorbed Pb2+ ions from natural and artificial water solutions. Under optimum conditions of ∼pH = 7.0 and a temperature of 25 °C, the electrode exhibited potential responses for Pb2+ ions in concentrations ranging from 1.0 × 10-6 M to 1 × 10-3 M along with a sensitivity of 0.2379 mV μM-1 cm-2, response time of 40 s, recovery time of 10 s, and stability for 64 days. The adsorbed Pb2+ ions were recovered at a rate of 84% after applying an optimized reverse voltage on the above-used electrodes. The adsorption and desorption mechanism has been explained based on the induced potential due to the electrochemical surface interaction between Pb2+ and the NiO-in-CHIT-g-PANI based electrode. The analytical application of the fabricated electrode in the real sample was also explored for the sensing and recovery of the respective metal ions in wastewater samples along with the possibility of optimization of the required metal concentrations.
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Affiliation(s)
- Chandra Shekhar Kushwaha
- Department of Polymer Science, Bhaskaracharya College of Applied Sciences, University of Delhi, Delhi-110075, India.
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23
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Zhang C, Hao T, Lin H, Wang Q, Wu Y, Kang K, Ji X, Guo Z. One-step electrochemical sensor based on an integrated probe toward sub-ppt level Pb 2+ detection by fast scan voltammetry. Anal Chim Acta 2020; 1128:174-183. [PMID: 32825900 DOI: 10.1016/j.aca.2020.07.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Revised: 06/29/2020] [Accepted: 07/02/2020] [Indexed: 01/14/2023]
Abstract
Herein, a one-step electrochemical sensor for selective and sensitive detection of lead ion Pb2+ was developed based on an integrated probe meso-tetra(4-carboxyphenyl) porphine (TCPP)-multi-walled carbon nanotubes (MWCNTs)@Fe3O4, which is TCPP-modified magnetic multi-walled carbon nanotubes. In the integrated probe, TCPP is a porphyrin with a specific cavity structure which could selectively chelate with Pb2+, MWCNTs with good electric conductivity provide a place to load TCPP and form a specific adsorption state of Pb2+ on the electrode surface, and Fe3O4 enables the rapid separation and one-step fabrication of the electrochemical sensor. Based on it, the sample pre-enrichment, separation and determination can be integrated, making the whole process very fast and simple. In addition, fast scan voltammetry (FSV) with a scan rate up to 200 V/s could be used to improve the detection sensitivity greatly, benefitting from the specific adsorption state formed. Under the optimal conditions obtained through orthogonal experiments including adsorption time, integrated probe dosage and solution pH, there was a good linear relationship between the peak current and Pb2+ concentration ranging from 2.0 × 10-4 μg L-1 to 2.0 × 10-3 μg L-1, with the limit of detection (LOD) being 6.7 × 10-5 μg L-1 (S/N = 3) i.e. 0.067 ppt. Analysis of actual water samples was successful. Therefore, being simple, fast, selective and sensitive, the one-step electrochemical sensor proposed has a good potential in practical applications.
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Affiliation(s)
- Chunfeng Zhang
- State Key Laboratory for Managing Biotic, Chemical Threats to the Quality, Safety of Agro-products, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, 315211, PR China
| | - Tingting Hao
- State Key Laboratory for Managing Biotic, Chemical Threats to the Quality, Safety of Agro-products, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, 315211, PR China
| | - Han Lin
- State Key Laboratory for Managing Biotic, Chemical Threats to the Quality, Safety of Agro-products, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, 315211, PR China
| | - Qi Wang
- State Key Laboratory for Managing Biotic, Chemical Threats to the Quality, Safety of Agro-products, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, 315211, PR China
| | - Yangbo Wu
- Faculty of Electrical Engineering and Computer Science, Ningbo University, Ningbo, 315211, PR China
| | - Kai Kang
- School of Pharmacy, Hebei Medical University, Shijiazhuang, 050017, PR China
| | - Xueping Ji
- School of Pharmacy, Hebei Medical University, Shijiazhuang, 050017, PR China
| | - Zhiyong Guo
- State Key Laboratory for Managing Biotic, Chemical Threats to the Quality, Safety of Agro-products, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, 315211, PR China.
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Shao Y, Ying Y, Ping J. Recent advances in solid-contact ion-selective electrodes: functional materials, transduction mechanisms, and development trends. Chem Soc Rev 2020; 49:4405-4465. [DOI: 10.1039/c9cs00587k] [Citation(s) in RCA: 143] [Impact Index Per Article: 35.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
This article presents a comprehensive overview of recent progress in the design and applications of solid-contact ion-selective electrodes (SC-ISEs).
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Affiliation(s)
- Yuzhou Shao
- Laboratory of Agricultural Information Intelligent Sensing
- School of Biosystems Engineering and Food Science
- Zhejiang University
- Hangzhou
- China
| | - Yibin Ying
- Laboratory of Agricultural Information Intelligent Sensing
- School of Biosystems Engineering and Food Science
- Zhejiang University
- Hangzhou
- China
| | - Jianfeng Ping
- Laboratory of Agricultural Information Intelligent Sensing
- School of Biosystems Engineering and Food Science
- Zhejiang University
- Hangzhou
- China
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25
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Zayed MA, Mahmoud WH, Abbas AA, Ali AE, Mohamed GG. A highly sensitive, selective and renewable carbon paste electrode based on a unique acyclic diamide ionophore for the potentiometric determination of lead ions in polluted water samples. RSC Adv 2020; 10:17552-17560. [PMID: 35515636 PMCID: PMC9053576 DOI: 10.1039/d0ra01435d] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Accepted: 04/20/2020] [Indexed: 11/22/2022] Open
Abstract
Due to the toxicity of lead(ii) to all living organisms as it destroys the central nervous system leading to circulatory system and brain disorders, the development of effective and selective lead(ii) ionophores for its detection is very important. In this work, 1,3-bis[2-(N-morpholino)acetamidophenoxy]propane (BMAPP), belonging to acyclic diamides, was applied as a highly selective lead(ii) ionophore in a carbon paste ion selective electrode for the accurate and precise determination of Pb(ii) ions even in the presence of other interfering ions. Factors affecting the electrode's response behavior were studied and optimized. Scanning electron microscopy (SEM), energy dispersive X-ray (EDX) and FT-IR spectroscopy were used for studying the morphology and response mechanism of the prepared sensor. The lipophilicity of the used ionophore, which contributes to the mechanical stability of the sensor, was studied using the contact angle measurement technique. The selectivity coefficients obtained by the separate solution method (SSM) and fixed interference method (FIM) confirmed the selectivity of the proposed sensor for Pb(ii) ions. The proposed sensor exhibited a Nernstian slope of 29.96 ± 0.34 mV per decade over a wide linear range of 5 × 10−8 to 1 × 10−1 mol L−1 and detection limit of 3 × 10−8 mol L−1 for 2 months with a fast response time (<10 s) and working pH range (2.5–5.5). To further ensure the practical applicability of the sensor, it was successfully applied for the lead(ii) ion determination in different water samples and the obtained data showed an agreement with those obtained by atomic absorption spectroscopy. In addition, it was successfully applied for the potentiometric titration of Pb(ii) against K2CrO4 and Na2SO4. Due to the toxicity of lead(ii) to all living organisms destroying the central nervous system and leading to circulatory system and brain disorders, the development of effective and selective lead(ii) ionophores for its detection is very important.![]()
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Affiliation(s)
- M. A. Zayed
- Chemistry Department
- Faculty of Science
- Cairo University
- Giza
- Egypt
| | | | - Ashraf A. Abbas
- Chemistry Department
- Faculty of Science
- Cairo University
- Giza
- Egypt
| | - Aya E. Ali
- Chemistry Department
- Faculty of Science
- Cairo University
- Giza
- Egypt
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26
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Sun L, Sun C, Sun X. An integrated measurement of six response performance indicators for lead ion-selective electrodes and application. ENVIRONMENTAL MONITORING AND ASSESSMENT 2019; 191:744. [PMID: 31720866 DOI: 10.1007/s10661-019-7908-z] [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: 02/20/2019] [Accepted: 10/21/2019] [Indexed: 06/10/2023]
Abstract
A heavy metal ion-selective electrode (ISE) with highly multiple response performances, rather than a high single response performance, is needed urgently for in situ, real-time environmental monitoring. In this study, we present an integrated measurement of six response performance variables such as the response slope, selectivity, dynamical range, detection limit, response time, and lifetime. They are selected and used as the indicators of the quality assessment for Pb2+-ISEs. The measurement, named as electrode comprehensive quality index (IECQ), is a single number for a given ISE. The comprehensive qualities of 114 Pb2+-ISEs reported in the literature were evaluated through the index method. Twenty-one Pb2+-ISEs-based polymer membrane with top 3 IECQ values for seven different properties have been recommended by evaluating and screening of the electrodes. Five Pb2+-ISEs-based polymer membrane with the best single response performance were also provided. The recommended Pb2+-ISEs, along with the corresponding Pb2+-ISEs with the miniaturized configurations, will provide helpful guideline for the application of Pb2+-ISE with highly multiple response performances in real-time environmental monitoring.
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Affiliation(s)
- Lingzhi Sun
- School of Pharmacy, Yancheng Teachers University, Yancheng, 224051, China
| | - Chengjun Sun
- Electrical and Computer Engineering Department, New Jersey Institute of Technology, Newark, NJ, USA
| | - Xianxiang Sun
- School of Petrochemical Engineering, Changzhou University, Changzhou, 213016, China.
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27
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Li Z, Yang K, Lv Y, Wang Q, Li C, Wu L, He Y. A rapid pretreatment of PVC products for high-throughput and visual detection of trace heavy metals. MONATSHEFTE FUR CHEMIE 2019. [DOI: 10.1007/s00706-019-02506-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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28
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Ding R, Lisak G. Sponge-based microfluidic sampling for potentiometric ion sensing. Anal Chim Acta 2019; 1091:103-111. [PMID: 31679563 DOI: 10.1016/j.aca.2019.09.024] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Revised: 08/19/2019] [Accepted: 09/09/2019] [Indexed: 11/17/2022]
Abstract
This work demonstrates an application of the new materials, sponges, for the use in microfluidic solution sampling integrated with ion-selective electrodes. The microfluidic sponge-based sampling was developed and studied as novel sampling and sample handling method to serve as alternative for microfluidic paper- and textile-based sampling for ion analysis in various environmental (Cd2+, Pb2+ and pH) and clinically (K+, Na+, Cl-) relevant samples. Three types of polyurethane, cellulose and natural sponges were used as substrates for microfluidic solution sampling. Polyurethane based sponge was found to have low heavy metal sorption capacity thus it was recognized as suitable for microfluidic sampling coupled with solid-state as well as solid-contact ion-selective electrodes. The application of sponge-based microfluidic sampling, contrary to previous findings of paper- and textile-based microfluidic sampling, allowed measurements of heavy metals without prior modification of the sampling substrate. Finally, the determination of potassium, sodium and chloride in wastewater sludge and sweat samples done with sponge-based microfluidic sampling integrated with ISEs was found similar to analysis done by ICP-OES and IC.
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Affiliation(s)
- Ruiyu Ding
- College of Engineering, School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Grzegorz Lisak
- College of Engineering, School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore; Nanyang Environment and Water Research Institute, Residues and Resource Reclamation Center, 1 Cleantech Loop, Cleantech, Singapore, 637141, Singapore.
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29
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Liu ZD, Li HB, Fang X, Zhang H, Ma LQ, Luo J. Investigating Lead Species and Bioavailability in Contaminated Soils: Coupling DGT Technique with Artificial Gastrointestinal Extraction and in Vivo Bioassay. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:5717-5724. [PMID: 31009209 DOI: 10.1021/acs.est.8b06918] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Although strong in vivo-in vitro correlations (IVIVCs) between relative bioavailability (RBA) and bioaccessibility of soil Pb were well reported, knowledge on the fractions of bioaccessible Pb in simulated gastrointestinal (GI) fluids that are available for absorption into the systemic circulation is limited. Here, Pb-RBA in 14 Pb-contaminated soils were assessed using an in vivo mouse bioassay and compared to Pb bioaccessibility by the gastrointestinal phase of the UBM (Unified Bioaccessibility research group of Europe (BARGE) Method) in vitro assay with and without 0.45 μm filtration of GI fluid. Results showed good IVIVC between Pb-RBA and Pb bioaccessibility without filtration ( r 2 = 0.62), while Pb bioaccessibility with filtration provided a poor correlation with Pb-RBA ( r 2 = 0.16). This suggested that besides dissolved Pb ions, Pb-complexes formed in the UBM gastrointestinal fluid might also contribute to bioavailable Pb. To ascertain this, DGT (diffusive gradients in thin-films) devices which can measure both Pb2+ ions and labile inorganic and organic Pb-complexes were introduced to the UBM fluids to measure Pb DGT-bioaccessibility, which showed strong correlation to Pb-RBA ( r 2 = 0.71). With increasing diffusive gel thickness which could enhance release of Pb ions from Pb-complexes, Pb DGT-bioaccessibility increased by 3.4-5.7 times, while inclusion of dialysis membrane within DGT devices significantly decreased Pb DGT-bioaccessibility by inhibiting diffusion of Pb complexes to binding gel. These results confirmed the contribution of Pb-complexes to Pb bioavailability, providing new insights to Pb bioavailability.
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Affiliation(s)
- Zhao-Dong Liu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment , Nanjing University , Nanjing 210023 , People's Republic of China
| | - Hong-Bo Li
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment , Nanjing University , Nanjing 210023 , People's Republic of China
| | - Xu Fang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment , Nanjing University , Nanjing 210023 , People's Republic of China
| | - Hao Zhang
- Lancaster Environment Centre , Lancaster University , Lancaster , LA1 4YQ , United Kingdom
| | - Lena Q Ma
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment , Nanjing University , Nanjing 210023 , People's Republic of China
- Soil and Water Science Department , University of Florida , Gainesville , Florida 32611 , United States
| | - Jun Luo
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment , Nanjing University , Nanjing 210023 , People's Republic of China
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30
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31
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Ion-Selective Electrodes for Detection of Lead (II) in Drinking Water: A Mini-Review. ENVIRONMENTS 2018. [DOI: 10.3390/environments5090095] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Despite the fact that the adverse health effects due to the intake of lead have been well studied and widely recognized, lead contamination in drinking water has been reoccurring worldwide, with some incidents escalating into a public drinking water crisis. As lead contamination is often related to lead-based pipes close to or inside homes, it is not realistic, at least in the near term, to remove and replace all lead connection pipes and lead-based plumbing. Effective monitoring of lead concentration at consumers’ water taps remains critical for providing consumers with first-hand information and preventing potential wide-spread lead contamination in drinking water. This review paper examines the existing common technologies for laboratory testing and on-site measuring of lead concentrations. As the conventional analytical techniques for lead detection require using expensive instruments, as well as a high time for sample preparation and a skilled operator, an emphasis is placed on reviewing ion-selective electrode (ISE) technology due to its superior performance, low cost, ease of use, and its promising potential to be miniaturized and integrated into standalone sensing units. In a holistic way, this paper reviews and discusses the background, different types of ISEs are reviewed and discussed, namely liquid-contact ISEs and solid-contact ISEs. Along with the potential opportunities for further research, the limitations and unique challenges of ISEs for lead detection are also discussed in detail.
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32
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Brown A, Bunchuay T, Crane CG, White NG, Thompson AL, Beer PD. A Bis-Triazacyclononane Tris-Pyridyl N 9 -Azacryptand "Beer Can" Receptor for Complexation of Alkali Metal and Lead(II) Cations. Chemistry 2018; 24:10434-10442. [PMID: 29668116 DOI: 10.1002/chem.201801300] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Indexed: 11/08/2022]
Abstract
A new bis-triazacyclononane tris-pyridyl N9 -azacryptand ligand is prepared via a convenient one-pot [2+3] condensation reaction between triazacyclononane and 2,6-bis(bromomethyl) pyridine in the presence of M2 CO3 (M=Li, Na, K). The proton, lithium, sodium, potassium and lead(II) complexes of the ligand are characterised in the solid state. Preliminary solution-phase competition experiments indicate that the cryptand ligand preferentially binds lead(II) in the presence of sodium, calcium, potassium and zinc cations in methanol solution.
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Affiliation(s)
- Asha Brown
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford, OX1 3TA, UK
| | - Thanthapatra Bunchuay
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford, OX1 3TA, UK
| | - Christopher G Crane
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford, OX1 3TA, UK
| | - Nicholas G White
- Research School of Chemistry, The Australian National University, Canberra, ACT, Australia
| | - Amber L Thompson
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford, OX1 3TA, UK
| | - Paul D Beer
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford, OX1 3TA, UK
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33
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Ajadi AA, Shuaib N, Shoukry AF. Depth profiling X-ray photoelectron spectroscopy and atomic force microscopy of Cd( ii)- and Pb( ii)-selective electrodes based on nano metal sulfides. RSC Adv 2018; 8:3574-3581. [PMID: 35542917 PMCID: PMC9077700 DOI: 10.1039/c7ra13168b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2017] [Accepted: 01/10/2018] [Indexed: 11/21/2022] Open
Abstract
This research involved constructing and studying plastic membrane Cd(ii)- and Pb(ii)-ion selective electrodes of the coated wire type based on nanoparticles of CdS and PbS as ionophores, respectively. The electrodes exhibited average linear concentration ranges of 1.0 × 10−6 to 1.0 × 10−2 and 9.6 × 10−7 to 1.0 × 10−2 M, average detection limits of 8.6 × 10−7 and 5.8 × 10−7 M, pH ranges of 2.2–5.8 and 2.9–5.9, and average calibration graph slopes of 28.56 and 28.81 mV per concentration decade, respectively. Both electrodes showed high selectivity towards many inorganic cations. Depth profiling X-ray photoelectron spectroscopy of fresh and expired membranes proved that: (a) the nanoparticles were homogeneously dissolved in the polymeric network and (b) the limitation of the life span of the plastic membrane was due to leaching of the active ingredient from the membrane surface to the bathing solution. The topography of fresh, active, and expired membranes as imaged by atomic force microscopy revealed the formation of a gel layer at the surface of the active electrode and drastic deformation of the expired membrane's surface. Nanoparticles of CdS and PbS as ionophres for plastic membrane metal cations electrodes.![]()
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Affiliation(s)
| | - Nadia M. Shuaib
- Chemistry Department
- Faculty of Science
- Kuwait University
- Kuwait
| | - Adel F. Shoukry
- Chemistry Department
- Faculty of Science
- Kuwait University
- Kuwait
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34
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Joon NK, He N, Wagner M, Cárdenas M, Bobacka J, Lisak G. Influence of phosphate buffer and proteins on the potentiometric response of a polymeric membrane-based solid-contact Pb(II) ion-selective electrode. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2017.08.126] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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35
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Portales MV, Lazo Fraga AR, Díaz García AM, García-Zaldívar O, Peláiz Barranco A, Aguilar Frutis MA. Cyclic voltammetry and impedance spectroscopy analysis for graphene-modified solid-state electrode transducers. J Solid State Electrochem 2017. [DOI: 10.1007/s10008-017-3776-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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36
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Affiliation(s)
- Wen-Chi Lin
- Department
of Chemical Engineering, University of Michigan, 3074 H. H. Dow, 2300 Hayward Street, Ann Arbor, Michigan 48109-2136, United States
| | - Zhongrui Li
- Department
of Earth and Environmental Science, University of Michigan, 2534 C.
C. Little Building, 1100 North University Avenue, Ann Arbor, Michigan 48109-1005, United States
| | - Mark A. Burns
- Department
of Chemical Engineering, University of Michigan, 3074 H. H. Dow, 2300 Hayward Street, Ann Arbor, Michigan 48109-2136, United States
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37
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Lisak G, Tamaki T, Ogawa T. Dualism of Sensitivity and Selectivity of Porphyrin Dimers in Electroanalysis. Anal Chem 2017; 89:3943-3951. [DOI: 10.1021/acs.analchem.6b04179] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Grzegorz Lisak
- Johan
Gadolin Process Chemistry Centre, Laboratory of Analytical Chemistry, Åbo Akademi University, Biskopsgatan 8, Åbo-Turku 20500, Finland
- School
of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
- Nanyang Environment and Water Research Institute, 1 Cleantech Loop, CleanTech, Singapore 637141, Singapore
| | - Takashi Tamaki
- Department
of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
| | - Takuji Ogawa
- Department
of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
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38
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Sun L, Sun C, Sun X. Screening highly selective ionophores for heavy metal ion-selective electrodes and potentiometric sensors. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2016.10.156] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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39
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Akieh-Pirkanniemi M, Lisak G, Arroyo J, Bobacka J, Ivaska A. Tuned ionophore-based bi-membranes for selective transport of target ions. J Memb Sci 2016. [DOI: 10.1016/j.memsci.2016.03.042] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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40
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Lisak G, Arnebrant T, Lewenstam A, Bobacka J, Ruzgas T. In Situ Potentiometry and Ellipsometry: A Promising Tool to Study Biofouling of Potentiometric Sensors. Anal Chem 2016; 88:3009-14. [DOI: 10.1021/acs.analchem.5b04364] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Grzegorz Lisak
- Johan
Gadolin Process Chemistry Centre, c/o Laboratory of Analytical Chemistry, Åbo Akademi University, FIN-20500 Åbo-Turku, Finland
- Department
of Biomedical Sciences, Faculty of Health and Society, Malmö University, SE-205 06 Malmö, Sweden
- Biofilms-Research
Center for Biointerfaces, Malmö University, SE-205 06 Malmö, Sweden
| | - Thomas Arnebrant
- Department
of Biomedical Sciences, Faculty of Health and Society, Malmö University, SE-205 06 Malmö, Sweden
- Biofilms-Research
Center for Biointerfaces, Malmö University, SE-205 06 Malmö, Sweden
| | - Andrzej Lewenstam
- Johan
Gadolin Process Chemistry Centre, c/o Laboratory of Analytical Chemistry, Åbo Akademi University, FIN-20500 Åbo-Turku, Finland
- Faculty
of Materials Science and Ceramics, AGH−University of Science and Technology, 30-059 Krakow, Poland
| | - Johan Bobacka
- Johan
Gadolin Process Chemistry Centre, c/o Laboratory of Analytical Chemistry, Åbo Akademi University, FIN-20500 Åbo-Turku, Finland
| | - Tautgirdas Ruzgas
- Department
of Biomedical Sciences, Faculty of Health and Society, Malmö University, SE-205 06 Malmö, Sweden
- Biofilms-Research
Center for Biointerfaces, Malmö University, SE-205 06 Malmö, Sweden
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41
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Affiliation(s)
- Eric Bakker
- Department of Inorganic and
Analytical Chemistry, University of Geneva, 1211 Geneva, Switzerland
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42
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Direct determination of cadmium and lead in pharmaceutical ingredients using anodic stripping voltammetry in aqueous and DMSO/water solutions. Anal Chim Acta 2015; 893:25-33. [PMID: 26398419 DOI: 10.1016/j.aca.2015.07.010] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2015] [Revised: 06/08/2015] [Accepted: 07/30/2015] [Indexed: 01/07/2023]
Abstract
A new electrochemical method has been developed to detect and quantify the elemental impurities, cadmium(II) (Cd(2+)) and lead(II) (Pb(2+)), either simultaneously or individually in pharmaceutical matrices. The electro-analytical approach, involving the use of anodic stripping voltammetry (ASV) on an unmodified glassy carbon electrode, was performed in both aqueous and in a 95/5 dimethyl sulfoxide (DMSO)/water solutions, without acid digestion or dry ashing to remove organic matrices. Limits of detection (LODs) in the μg L(-1) [or parts per billion (ppb), mass/volume] range were obtained for both heavy metals - in the presence and absence of representative pharmaceutical components. To the best of our knowledge, the work demonstrates the first analysis of heavy metals in DMSO/water solutions through ASV. The strong reproducibility and stability of the sensing platform, as well as obviation of sample pretreatment show the promise of utilizing ASV as a sensitive, robust, and inexpensive alternative to inductively-coupled-plasma (ICP)-based approaches for the analysis of elemental impurities in, e.g., pharmaceutical-related matrices.
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43
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Mikhelson KN, Peshkova MA. Advances and trends in ionophore-based chemical sensors. RUSSIAN CHEMICAL REVIEWS 2015. [DOI: 10.1070/rcr4506] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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44
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Textile-based sampling for potentiometric determination of ions. Anal Chim Acta 2015; 877:71-9. [DOI: 10.1016/j.aca.2015.03.045] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Revised: 03/24/2015] [Accepted: 03/25/2015] [Indexed: 11/18/2022]
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45
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Abraham AA, Rezayi M, Manan NS, Narimani L, Rosli ANB, Alias Y. A Novel Potentiometric Sensor Based on 1,2-Bis(N’-benzoylthioureido)benzene and Reduced Graphene Oxide for Determination of Lead (II) Cation in Raw Milk. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2015.03.003] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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46
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Wang S, Sun J, Gao F. A turn-on near-infrared fluorescent chemosensor for selective detection of lead ions based on a fluorophore-gold nanoparticle assembly. Analyst 2015; 140:4001-6. [PMID: 25919909 DOI: 10.1039/c5an00320b] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
A turn-on fluorescent chemosensor of Pb(2+) in the near-infrared (NIR) region, which is based on the Pb(2+)-tuned restored fluorescence of a weakly fluorescent fluorophore-gold nanoparticle (AuNPs) assembly, has been reported. In this fluorophore-AuNP assembly, NIR fluorescent dye brilliant cresyl blue (BCB) molecules act as fluorophores and are used for signal transduction of fluorescence, while AuNPs act as quenchers to quench the nearby fluorescent BCB molecules via electron transfer. In the presence of Pb(2+), fluorescent BCB molecules detached from AuNPs and restored their fluorescence due to the formation of a chelating complex between Pb(2+) and glutathione confined on AuNPs. Under the optimal conditions, the present BCB-AuNP assembly is capable of detecting Pb(2+) with a concentration ranging from 7.5 × 10(-10) to 1 × 10(-8) mol L(-1) (0.16-2.1 ng mL(-1)) and a detection limit of 0.51 nM (0.11 ng mL(-1)). The present BCB-AuNP assembly can be used in aqueous media for the determination of Pb(2+) unlike common organic fluorescent reagents, and also shows advantages of NIR fluorescence spectrophotometry such as less interference, lower detection limit, and higher sensitivity. Moreover, the present method was successfully applied for the detection of Pb(2+) in water samples with satisfactory results.
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Affiliation(s)
- Shaozhen Wang
- Department of Pharmacy, Wannan Medical College, Wuhu 241002, P. R. China.
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47
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Multicalibrational procedure for more reliable analyses of ions at low analyte concentrations. Electrochim Acta 2014. [DOI: 10.1016/j.electacta.2014.02.091] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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48
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Jarczewska M, Kierzkowska E, Ziółkowski R, Górski L, Malinowska E. Electrochemical oligonucleotide-based biosensor for the determination of lead ion. Bioelectrochemistry 2014; 101:35-41. [PMID: 25042900 DOI: 10.1016/j.bioelechem.2014.06.013] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2014] [Revised: 06/30/2014] [Accepted: 06/30/2014] [Indexed: 01/25/2023]
Abstract
The possibility of utilization of gold electrodes modified with short guanine-rich ssDNA probes for determination of Pb(2+) was examined. Interaction between guanine residues and lead ion followed by formation of G-quadruplex structures was confirmed by electrochemical impedance spectroscopy investigations. An external cationic redox label, methylene blue, was employed in voltammetric measurements for analytical signal generation. It was shown that due to the G-quadruplex formation, the oligonucleotides in the recognition layer fold, which enhances the electron transfer between methylene blue and the electrode surface. The MB current signal rises proportionally to the lead ion concentration in the range from 0.05 to 1μmol/L. The developed biosensor demonstrated high selectivity towards Pb(2+) ion, with only minor response towards interfering metal cations. The calculated limit of detection was of 34.7nmol/L. The utilization of the biosensor for Pb(2+) determination in real samples of water was also tested.
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Affiliation(s)
- Marta Jarczewska
- Institute of Biotechnology, Department of Microbioanalytics, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland
| | - Ewa Kierzkowska
- Institute of Biotechnology, Department of Microbioanalytics, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland
| | - Robert Ziółkowski
- Institute of Biotechnology, Department of Microbioanalytics, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland
| | - Lukasz Górski
- Institute of Biotechnology, Department of Microbioanalytics, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland.
| | - Elżbieta Malinowska
- Institute of Biotechnology, Department of Microbioanalytics, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland
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49
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Lower rim substituted p-tert-butyl-calix[4]arene. Part 17. Synthesis, extractive and ionophoric properties of p-tert-butylcalix[4]arene appended with hydroxamic acid moieties. Polyhedron 2014. [DOI: 10.1016/j.poly.2014.04.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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