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Kakalejčíková S, Bazel Y, Fizer M. Extraction-less green spectrofluorimetric method for determination of mercury using an Astra Phloxine fluorophore: Comprehensive experimental and theoretical studies. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 310:123946. [PMID: 38295591 DOI: 10.1016/j.saa.2024.123946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2023] [Revised: 01/11/2024] [Accepted: 01/21/2024] [Indexed: 02/02/2024]
Abstract
A new sensitive and selective extraction-less method for the spectrofluorimetric determination of Hg2+ has been developed using the polymethine dye Astra Phloxine (AP) with requirements for green analytical chemistry. The principle of this method for analytical use is the formation of an ion associate (IA) in the presence of mercury ions and AP, which causes a change in the electronic structure of the dye cation and its subsequent fluorescence quenching. The IA created during the process was sufficiently stable in aqueous solutions and did not require the use of surfactants or organic solvents, which are typically used for similar analytical systems. The system indicated high selectivity towards Hg2+ in the presence of at least 100-fold higher concentrations of Co2+, Fe2+, Mg2+, Ni2+, Zn2+, Ca2+, Ba2+, K+, Na+. The calibration curve was linear in the range from 0.003 to 0.1 mg L-1. Precision and accuracy were expressed as intra-day and inter-day analysis with RSD values of 2.9 - 4.8 % and recovery of 97.1 - 110.0 %. The proposed method was used for the determination of Hg2+ on the model and real water samples. Theoretical calculations were used to predict the IA structure and to explain the experimentally observed fluorescence spectra. A few theoretical methods were tested for predicting IA emission energies, and the CIS(D) method was found to be the most accurate.
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Affiliation(s)
- Sofia Kakalejčíková
- Department of Analytical Chemistry, Institute of Chemistry, Pavol Jozef Šafárik University in Košice, Košice, Slovak Republic.
| | - Yaroslav Bazel
- Department of Analytical Chemistry, Institute of Chemistry, Pavol Jozef Šafárik University in Košice, Košice, Slovak Republic
| | - Maksym Fizer
- Department of Chemistry, University of Nevada, Reno, 1664 N. Virginia Street, Reno, Nevada 89557-0216, United States; Department of Organic Chemistry, Educational Scientific Institute of Chemistry and Ecology, Uzhhorod National University, Fedinets', Str. 53/1, Uzhhorod 88000, Ukraine.
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Serrano N, Pérez-Ràfols C, Ariño C, Esteban M, Manuel Díaz-Cruz J. MCR-ALS of voltammetric data for the study of environmentally relevant substances. Microchem J 2020. [DOI: 10.1016/j.microc.2020.105177] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Chu H, Yao D, Chen J, Yu M, Su L. Double-Emission Ratiometric Fluorescent Sensors Composed of Rare-Earth-Doped ZnS Quantum Dots for Hg 2+ Detection. ACS OMEGA 2020; 5:9558-9565. [PMID: 32363308 PMCID: PMC7191836 DOI: 10.1021/acsomega.0c00861] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Accepted: 04/08/2020] [Indexed: 05/08/2023]
Abstract
Quantum dots (QDs) are a class of zero-dimensional nanocrystal materials, whose lengths are limited to 2-10 nm. Their unique advantages such as wide excitation spectra, narrow emission spectra, and high quantum yield make their application possible in fluorescence sensing, wherein QDs such as CdSe, CdTe, and CdS are used. Indeed, QDs have a wide range of applications in fluorescence sensing, and there have been many reports of applications based on QDs as ion probes. The emission spectra of QDs can be adjusted by changing the size of the QDs or doping them with other ions/elements. However, the high toxicity of Cd and the poor anti-interference ability of single-emission fluorescent probes greatly limit the applications of QDs in many fields. In this paper, ZnS QDs are doped with the rare-earth element Ce to form a low-toxicity double-emission ratiometric fluorescent sensor, ZnS:Ce, for Hg2+ detection. The results of transmission electron microscopy (TEM), X-ray diffractometry, X-ray photoelectron spectroscopy, and optical spectroscopy show that ZnS:Ce QDs were successfully synthesized. Under the optimal conditions, the concentration of Hg2+ was in the range of 10-100 μM, which had a linear relationship with the fluorescence intensity of the ZnS:Ce QDs: the linear correlation coefficient was 0.998, and the detection limit was 0.82 μM L-1. In addition, the fluorescent sensor had good selectivity for Hg2+, and it was successfully applied to the detection of Hg2+ in laboratory water samples.
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Pérez-Ràfols C, Subirats X, Serrano N, Díaz-Cruz JM. New discrimination tools for harvest year and varieties of white wines based on hydrophilic interaction liquid chromatography with amperometric detection. Talanta 2019; 201:104-110. [DOI: 10.1016/j.talanta.2019.03.099] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Revised: 03/27/2019] [Accepted: 03/28/2019] [Indexed: 10/27/2022]
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Serrano N, Cetó X, Núñez O, Aragó M, Gámez A, Ariño C, Díaz-Cruz JM. Characterization and classification of Spanish paprika (Capsicum annuum L.) by liquid chromatography coupled to electrochemical detection with screen-printed carbon-based nanomaterials electrodes. Talanta 2018; 189:296-301. [PMID: 30086921 DOI: 10.1016/j.talanta.2018.06.085] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Revised: 06/25/2018] [Accepted: 06/27/2018] [Indexed: 10/28/2022]
Abstract
Screen-printed electrodes based on graphite, carbon nanotubes, carbon nanofibers, and graphene were tested as amperometric detectors for the determination of phenolic compounds by high performance liquid chromatography (HPLC). The chromatographic performance as well as the obtained sensitivity, detection and quantification limits suggest that carbon nanofibers modified screen-printed electrode (SPCE-CNF) is the amperometric sensor that provides the best analytical performance. Upon this confirmation, chromatographic data obtained using SPCE-CNF were exploited by means of linear discriminant analysis (LDA) to successfully characterize and classify 96 Spanish paprika (Capsicum annuum L.) samples with different origin and type: from La Vera (including sweet, bittersweet and spicy types) and from Murcia (including sweet and spicy types).
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Affiliation(s)
- Núria Serrano
- Department of Chemical Engineering and Analytical Chemistry, University of Barcelona, Martí i Franquès 1-11, E08028 Barcelona, Spain.
| | - Xavier Cetó
- Department of Chemical Engineering and Analytical Chemistry, University of Barcelona, Martí i Franquès 1-11, E08028 Barcelona, Spain
| | - Oscar Núñez
- Department of Chemical Engineering and Analytical Chemistry, University of Barcelona, Martí i Franquès 1-11, E08028 Barcelona, Spain; Research Institute in Food Nutrition and Food Safety, University of Barcelona, Av. Prat de la Riba 171, Edifici Recerca (Gaudí), E-08901 Santa Coloma de Gramanet, Barcelona, Spain; Serra Hunter Fellow, Generalitat de Catalunya, Spain
| | - Miriam Aragó
- Department of Chemical Engineering and Analytical Chemistry, University of Barcelona, Martí i Franquès 1-11, E08028 Barcelona, Spain
| | - Alejandro Gámez
- Department of Chemical Engineering and Analytical Chemistry, University of Barcelona, Martí i Franquès 1-11, E08028 Barcelona, Spain
| | - Cristina Ariño
- Department of Chemical Engineering and Analytical Chemistry, University of Barcelona, Martí i Franquès 1-11, E08028 Barcelona, Spain
| | - José Manuel Díaz-Cruz
- Department of Chemical Engineering and Analytical Chemistry, University of Barcelona, Martí i Franquès 1-11, E08028 Barcelona, Spain
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In vitro study on antagonism mechanism of glutathione, sodium selenite and mercuric chloride. Talanta 2017; 171:262-269. [DOI: 10.1016/j.talanta.2017.04.074] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Revised: 04/25/2017] [Accepted: 04/30/2017] [Indexed: 02/08/2023]
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Turull M, Grmanova G, Dago À, Ariño C, Díez S, Díaz-Cruz JM, Esteban M. Phytochelatin synthesis in response to Hg uptake in aquatic plants near a chlor-alkali factory. CHEMOSPHERE 2017; 176:74-80. [PMID: 28259081 DOI: 10.1016/j.chemosphere.2017.02.092] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Revised: 02/16/2017] [Accepted: 02/17/2017] [Indexed: 06/06/2023]
Abstract
The effects of mercury (Hg) released from a chlor-alkali factory in aquatic plants along the Ebro River basin (NE Spain) were analysed considering the phytochelatins (PCn) and their isoforms content in these plants. These compounds were analyzed using HPLC with amperometric detection, and the macrophytes species Ceratophyllum demersum and Myriopyllum spicatum were collected in two sampling campaigns, autumn and spring, respectively. To correlate the PCn content in macrophytes with the Hg contamination, analysis of total Hg (THg) content in plants and suspended particulate matter, as well as the dissolved-bioavailable fraction of Hg in water measured by the diffusive gradient in thin film (DGT) technique were done. The results confirm the presence of PC2-Ala in extracts of C. demersum and PC2-desGly in M. spicatum, and the concentration of these thiol compounds depends clearly on the distance between the hot spot and the downstream sites: the higher the levels are, the closer the hot spot is. Since most of the Hg is hypothesized to be associated with SPM and transported downstream, our results of the DGT suggest that trace amounts of Hg in water can be released as free metal ions yielding a certain accumulation in plants (reaching the ppb level) that are enough for activation of induction of PCs. A few PCs species have been determined, at different seasons, indicating that they can be used as good indicators of the presence of bioavailable Hg in aquatic media throughout the year.
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Affiliation(s)
- Marta Turull
- Environmental Chemistry Department, Institute of Environmental Assessment and Water Research, IDÆA-CSIC, E-08034, Barcelona, Spain
| | - Gabriela Grmanova
- Departament de Química Analítica, Facultat de Química, Universitat de Barcelona, Martí i Franquès, 1-11, 08028, Barcelona, Spain
| | - Àngela Dago
- Departament de Química Analítica, Facultat de Química, Universitat de Barcelona, Martí i Franquès, 1-11, 08028, Barcelona, Spain
| | - Cristina Ariño
- Departament de Química Analítica, Facultat de Química, Universitat de Barcelona, Martí i Franquès, 1-11, 08028, Barcelona, Spain.
| | - Sergi Díez
- Environmental Chemistry Department, Institute of Environmental Assessment and Water Research, IDÆA-CSIC, E-08034, Barcelona, Spain
| | - José Manuel Díaz-Cruz
- Departament de Química Analítica, Facultat de Química, Universitat de Barcelona, Martí i Franquès, 1-11, 08028, Barcelona, Spain
| | - Miquel Esteban
- Departament de Química Analítica, Facultat de Química, Universitat de Barcelona, Martí i Franquès, 1-11, 08028, Barcelona, Spain
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Wang S, Wang L, Chen H, Wang Y, Cai J, Yang M, Liu F. Development of an eco-friendly immunochromatographic test strip and its application in detecting Hg2+ without chelators. RSC Adv 2016. [DOI: 10.1039/c5ra22752f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The schematic diagram of an eco-friendly immunochromatographic test strip (EFITS) and a competitive immunoreaction on the EFITS.
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Affiliation(s)
- Suyan Wang
- Institute of Plant Protection
- Jiangsu Academy of Agricultural Science
- Nanjing
- P. R. China
| | - Limin Wang
- College of Plant Protection (Key Laboratory of Integrated Management of Crop Diseases and Pests)
- Nanjing Agricultural University
- Nanjing
- P. R. China
| | - Hongfu Chen
- College of Plant Protection (Key Laboratory of Integrated Management of Crop Diseases and Pests)
- Nanjing Agricultural University
- Nanjing
- P. R. China
| | - Yulong Wang
- College of Plant Protection (Key Laboratory of Integrated Management of Crop Diseases and Pests)
- Nanjing Agricultural University
- Nanjing
- P. R. China
| | - Jia Cai
- College of Plant Protection (Key Laboratory of Integrated Management of Crop Diseases and Pests)
- Nanjing Agricultural University
- Nanjing
- P. R. China
| | - Mingming Yang
- College of Plant Protection (Key Laboratory of Integrated Management of Crop Diseases and Pests)
- Nanjing Agricultural University
- Nanjing
- P. R. China
| | - Fengquan Liu
- Institute of Plant Protection
- Jiangsu Academy of Agricultural Science
- Nanjing
- P. R. China
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Dago À, Navarro J, Ariño C, Díaz-Cruz JM, Esteban M. Carbon nanotubes and graphene modified screen-printed carbon electrodes as sensitive sensors for the determination of phytochelatins in plants using liquid chromatography with amperometric detection. J Chromatogr A 2015; 1409:210-7. [PMID: 26212803 DOI: 10.1016/j.chroma.2015.07.057] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2014] [Revised: 07/02/2015] [Accepted: 07/14/2015] [Indexed: 01/09/2023]
Abstract
Nanomaterials are of great interest for the development of electrochemical sensors. Multi-walled carbon nanotubes and graphene were used to modify the working electrode surface of different screen-printed carbon electrodes (SPCE) with the aim of improving the sensitivity of the SPCE and comparing it with the conventional glassy carbon electrode. To assay the usability of these sensors, a HPLC methodology with amperometric detection was developed to analyze several phytochelatins in plants of Hordeum vulgare and Glycine max treated with Hg(II) or Cd(II) giving detection limits in the low μmolL(-1) range. Phytochelatins are low molecular weight peptides with the general structure γ-(Glu-Cys)n-Gly (n=2-5) which are synthesized in plants in the presence of heavy metal ions. These compounds can chelate heavy metal ions by the formation of complexes which, are transported to the vacuoles, where the toxicity is not threatening. For this reason phytochelatins are essential in the detoxification of heavy metal ions in plants. The developed HPLC method uses a mobile phase of 1% of formic acid in water with KNO3 or NaCl (pH=2.00) and 1% of formic acid in acetonitrile. Electrochemical detection at different carbon-based electrodes was used. Among the sensors tested, the conventional glassy carbon electrode offers the best sensitivity although modification improves the sensitivity of the SPCE. Glutathione and several isoforms of phytochelatin two were found in plant extracts of both studied species.
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Affiliation(s)
- Àngela Dago
- Departament de Química Analítica, Facultat de Química, Universitat de Barcelona (UB), Martí i Franquès, 1-11, E-08028 Barcelona, Spain
| | - Javier Navarro
- Departament de Química Analítica, Facultat de Química, Universitat de Barcelona (UB), Martí i Franquès, 1-11, E-08028 Barcelona, Spain
| | - Cristina Ariño
- Departament de Química Analítica, Facultat de Química, Universitat de Barcelona (UB), Martí i Franquès, 1-11, E-08028 Barcelona, Spain.
| | - José Manuel Díaz-Cruz
- Departament de Química Analítica, Facultat de Química, Universitat de Barcelona (UB), Martí i Franquès, 1-11, E-08028 Barcelona, Spain
| | - Miquel Esteban
- Departament de Química Analítica, Facultat de Química, Universitat de Barcelona (UB), Martí i Franquès, 1-11, E-08028 Barcelona, Spain
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Dago À, González I, Ariño C, Martínez-Coronado A, Higueras P, Díaz-Cruz JM, Esteban M. Evaluation of mercury stress in plants from the Almadén mining district by analysis of phytochelatins and their Hg complexes. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2014; 48:6256-63. [PMID: 24793970 DOI: 10.1021/es405619y] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
To evaluate plant response to Hg stress, glutathione, phytochelatins, and their Hg complexes were analyzed using HPLC with amperometric detection in samples of Asparagus acutifolius grown in the Almadén mining district (Ciudad Real, Spain), one of the most Hg-contaminated sites in the world. Soils of the Almadén mining district, and specifically from the Almadenejos zone, are highly contaminated, with some zones having values above 4,000 μg Hg g(-1) soil. Although soils have an extremely high concentration of mercury, generally less than 2% is available for plants, as is shown by various soil extractions simulating bioavailability. In plants, Hg concentration increases depending on the content of Hg in soils. In addition, Hg levels in roots are higher than in aerial parts, which is a strategy of plants for protecting their more sensitive aerial parts from the deleterious effects of metal stress. The total content of phytochelatins (PCs) and their complexes are directly related with the amount of mercury in soils. These findings highlight the important role of thiol compounds and their metal complexes in capturing and fixing Hg from soils, giving plants the capacity to deal with the heavy metal toxicity of polluted soils.
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Affiliation(s)
- Àngela Dago
- Departament de Química Analítica, Facultat de Química, Universitat de Barcelona , Martí i Franquès, 1-11, 08028 Barcelona, Barcelona, Spain
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Cavanillas S, Serrano N, Díaz-Cruz JM, Ariño C, Esteban M. Commercial Screen-Printed Gold Electrodes for the Detection and Quantification of Aminothiols in Human Plasma by Liquid Chromatography with Electrochemical Detection. ELECTROANAL 2014. [DOI: 10.1002/elan.201300593] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Dago À, González-García O, Ariño C, Díaz-Cruz JM, Esteban M. Characterization of Hg(II) binding with different length phytochelatins using liquid chromatography and amperometric detection. Anal Chim Acta 2011; 695:51-7. [DOI: 10.1016/j.aca.2011.03.060] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2011] [Revised: 03/18/2011] [Accepted: 03/21/2011] [Indexed: 11/25/2022]
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Han S, Chen Y. Colorimetric probing of in both solution and thin film. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2011; 3:557-559. [PMID: 32938072 DOI: 10.1039/c0ay00633e] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
A reagent for colorimetric detection of Hg2+ in both solution and PMMA thin film has been investigated. It is found that 7-hydroxy-spiro-(2H-1-benzopyran-2,2'-indoline) shows highly selective colorimetric probing for Hg2+ in both solution and PMMA thin film. Addition of Hg2+ to the solution of reagent or dipping the reagent thin film into the solution of Hg2+ produces a distinct color change from colorless to red. Control experiments show that the colorimetric detection of Hg2+ is not affected by other competitive metal ions.
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Affiliation(s)
- Shulei Han
- Laboratory of Organic Optoelectronic Functional Materials and Molecular Engineering, Technical Institute of Physics and Chemistry, The Chinese Academy of Science, Beijing, 100190, China.
| | - Yi Chen
- Laboratory of Organic Optoelectronic Functional Materials and Molecular Engineering, Technical Institute of Physics and Chemistry, The Chinese Academy of Science, Beijing, 100190, China.
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