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Villarino N, Lavilla I, Pena-Pereira F, Bendicho C. Droplet-based luminescent sensor supported onto hydrophobic cellulose substrate for assessing fish freshness following smartphone readout. Food Chem 2023; 424:136475. [PMID: 37269633 DOI: 10.1016/j.foodchem.2023.136475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Revised: 05/16/2023] [Accepted: 05/26/2023] [Indexed: 06/05/2023]
Abstract
In this work, two sensitive droplet-based luminescent assays with smartphone readout for the determination of trimethylamine nitrogen (TMA-N) and total volatile basic nitrogen (TVB-N) are reported. Both assays exploit the luminescence quenching of copper nanoclusters (CuNCs) produced when exposed to volatile nitrogen bases. In addition, hydrophobic-based cellulose substrates demonstrated their suitability as holders for both in-drop volatile enrichment and subsequent smartphone-based digitization of the enriched colloidal solution of CuNCs. Under optimal conditions, enrichment factors of 181 and 153 were obtained with the reported assays for TMA-N and TVB-N, respectively, leading to methodological LODs of 0.11 mg/100 g and 0.27 mg/100 g for TMA-N and TVB-N, respectively. The repeatability, expressed as RSD, was 5.2% and 5.6% for TMA-N and TVB-N, respectively (N = 8). The reported luminescent assays were successfully applied to the analysis of fish samples, showing statistically comparable results to those obtained with the reference methods of analysis.
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Affiliation(s)
- Nerea Villarino
- Centro de Investigación Mariña, Universidade de Vigo, Departamento de Química Analítica e alimentaria, Grupo QA2, Edificio CC Experimentais, Campus de Vigo, As Lagoas, Marcosende, 36310 Vigo, Spain
| | - Isela Lavilla
- Centro de Investigación Mariña, Universidade de Vigo, Departamento de Química Analítica e alimentaria, Grupo QA2, Edificio CC Experimentais, Campus de Vigo, As Lagoas, Marcosende, 36310 Vigo, Spain
| | - Francisco Pena-Pereira
- Centro de Investigación Mariña, Universidade de Vigo, Departamento de Química Analítica e alimentaria, Grupo QA2, Edificio CC Experimentais, Campus de Vigo, As Lagoas, Marcosende, 36310 Vigo, Spain.
| | - Carlos Bendicho
- Centro de Investigación Mariña, Universidade de Vigo, Departamento de Química Analítica e alimentaria, Grupo QA2, Edificio CC Experimentais, Campus de Vigo, As Lagoas, Marcosende, 36310 Vigo, Spain.
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2
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Pena-Pereira F, Lavilla I, de la Calle I, Romero V, Bendicho C. Detection of gases and organic vapors by cellulose-based sensors. Anal Bioanal Chem 2023:10.1007/s00216-023-04649-z. [PMID: 37000210 PMCID: PMC10328872 DOI: 10.1007/s00216-023-04649-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 03/04/2023] [Accepted: 03/13/2023] [Indexed: 04/01/2023]
Abstract
The growing interest in the development of cost-effective, straightforward, and rapid analytical systems has found cellulose-based materials, including cellulose derivatives, cellulose-based gels, nanocellulosic materials, and the corresponding (nano)cellulose-based composites, to be valuable platforms for sensor development. The present work presents recent advances in the development of cellulose-based sensors for the determination of volatile analytes and derivatives of analytical relevance. In particular, strategies described in the literature for the fabrication and modification of cellulose-based substrates with responsive materials are summarized. In addition, selected contributions reported in the field of paper-based volatile sensors are discussed, with a particular emphasis on quick response (QR) code paper-based platforms, intelligent films for food freshness monitoring, and sensor arrays for volatile discrimination purposes. Furthermore, analytical strategies devised for the determination of ionic species by in situ generation of volatile derivatives in both paper-based analytical devices (PADs) and microfluidic PADs will also be described.
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Affiliation(s)
- Francisco Pena-Pereira
- Centro de Investigación Mariña, Departamento de Química Analítica e alimentaria, Grupo QA2, Edificio CC Experimentais, Universidade de Vigo, Campus de Vigo, As Lagoas, Marcosende, 36310, Vigo, Spain.
| | - Isela Lavilla
- Centro de Investigación Mariña, Departamento de Química Analítica e alimentaria, Grupo QA2, Edificio CC Experimentais, Universidade de Vigo, Campus de Vigo, As Lagoas, Marcosende, 36310, Vigo, Spain
| | - Inmaculada de la Calle
- Centro de Investigación Mariña, Departamento de Química Analítica e alimentaria, Grupo QA2, Edificio CC Experimentais, Universidade de Vigo, Campus de Vigo, As Lagoas, Marcosende, 36310, Vigo, Spain
| | - Vanesa Romero
- Centro de Investigación Mariña, Departamento de Química Analítica e alimentaria, Grupo QA2, Edificio CC Experimentais, Universidade de Vigo, Campus de Vigo, As Lagoas, Marcosende, 36310, Vigo, Spain
| | - Carlos Bendicho
- Centro de Investigación Mariña, Departamento de Química Analítica e alimentaria, Grupo QA2, Edificio CC Experimentais, Universidade de Vigo, Campus de Vigo, As Lagoas, Marcosende, 36310, Vigo, Spain.
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Villarino N, Pena-Pereira F, Lavilla I, Bendicho C. Waterproof Cellulose-Based Substrates for In-Drop Plasmonic Colorimetric Sensing of Volatiles: Application to Acid-Labile Sulfide Determination in Waters. ACS Sens 2022; 7:839-848. [PMID: 35285629 PMCID: PMC8961881 DOI: 10.1021/acssensors.1c02585] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The present work reports on the assessment of widely available waterproof cellulose-based substrates for the development of sensitive in-drop plasmonic sensing approaches. The applicability of three inexpensive substrates, namely, Whatman 1PS, polyethylene-coated filter paper, and tracing paper, as holders for microvolumes of colloidal solutions was evaluated. Waterproof cellulose-based substrates demonstrated to be highly convenient platforms for analytical purposes, as they enabled in situ generation of volatiles and syringeless drop exposure unlike conventional single-drop microextraction approaches and can behave as sample compartments for smartphone-based colorimetric sensing in an integrated way. Remarkably, large drop volumes (≥20 μL) of colloidal solutions can be employed for enrichment processes when using Whatman 1PS as holder. In addition, the stability and potential applicability of spherical, rod-shaped, and core-shell metallic NPs onto waterproof cellulose-based substrates was evaluated. In particular, Au@AgNPs showed potential for the colorimetric detection of in situ generated H2S, I2, and Br2, whereas AuNRs hold promise for I2, Br2, and Hg0 colorimetric sensing. As a proof of concept, a smartphone-based colorimetric assay for determination of acid-labile sulfide in environmental water samples was developed with the proposed approach taking advantage of the ability of Au@AgNPs for H2S sensing. The assay showed a limit of detection of 0.46 μM and a repeatability of 4.4% (N = 8), yielding satisfactory recoveries (91-107%) when applied to the analysis of environmental waters.
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Affiliation(s)
- Nerea Villarino
- Centro de Investigación Mariña, Universidade de Vigo, Departamento de Química Analítica e alimentaria, Grupo QA2, Edificio CC Experimentais, Campus de Vigo, As Lagoas, Marcosende, 36310 Vigo, Spain
| | - Francisco Pena-Pereira
- Centro de Investigación Mariña, Universidade de Vigo, Departamento de Química Analítica e alimentaria, Grupo QA2, Edificio CC Experimentais, Campus de Vigo, As Lagoas, Marcosende, 36310 Vigo, Spain
| | - Isela Lavilla
- Centro de Investigación Mariña, Universidade de Vigo, Departamento de Química Analítica e alimentaria, Grupo QA2, Edificio CC Experimentais, Campus de Vigo, As Lagoas, Marcosende, 36310 Vigo, Spain
| | - Carlos Bendicho
- Centro de Investigación Mariña, Universidade de Vigo, Departamento de Química Analítica e alimentaria, Grupo QA2, Edificio CC Experimentais, Campus de Vigo, As Lagoas, Marcosende, 36310 Vigo, Spain
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López-Lorente ÁI, Pena-Pereira F, Pedersen-Bjergaard S, Zuin VG, Ozkan SA, Psillakis E. The Ten Principles of Green Sample Preparation. Trends Analyt Chem 2022. [DOI: 10.1016/j.trac.2022.116530] [Citation(s) in RCA: 49] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Bendicho C, Lavilla I, Pena-Pereira F, de la Calle I, Romero V. Paper-Based Analytical Devices for Colorimetric and Luminescent Detection of Mercury in Waters: An Overview. Sensors (Basel) 2021; 21:7571. [PMID: 34833647 PMCID: PMC8625215 DOI: 10.3390/s21227571] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Revised: 11/08/2021] [Accepted: 11/10/2021] [Indexed: 11/16/2022]
Abstract
Lab-on-paper technologies, also known as paper-based analytical devices (PADs), have received increasing attention in the last years, and nowadays, their use has spread to virtually every application area, i.e., medical diagnostic, food safety, environmental monitoring, etc. Advantages inherent to on-field detection, which include avoiding sampling, sample preparation and conventional instrumentation in central labs, are undoubtedly driving many developments in this area. Heavy metals represent an important group of environmental pollutants that require strict controls due to the threat they pose to ecosystems and human health. In this overview, the development of PADs for Hg monitoring, which is considered the most toxic metal in the environment, is addressed. The main emphasis is placed on recognition elements (i.e., organic chromophores/fluorophores, plasmonic nanoparticles, inorganic quantum dots, carbon quantum dots, metal nanoclusters, etc.) employed to provide suitable selectivity and sensitivity. The performance of both microfluidic paper-based analytical devices and paper-based sensors using signal readout by colorimetry and luminescence will be discussed.
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Affiliation(s)
- Carlos Bendicho
- Centro de Investigación Mariña, Departamento de Química Analítica e Alimentaria, Campus de Vigo, Universidade de Vigo, Grupo QA2, Edificio CC Experimentais, As Lagoas, Marcosende, 36310 Vigo, Spain; (I.L.); (F.P.-P.); (I.d.l.C.); (V.R.)
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Bendicho C, Lavilla I, Pena-Pereira F, de la Calle I, Romero V. Nanomaterial-Integrated Cellulose Platforms for Optical Sensing of Trace Metals and Anionic Species in the Environment. Sensors (Basel) 2021; 21:E604. [PMID: 33467146 PMCID: PMC7830103 DOI: 10.3390/s21020604] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 01/12/2021] [Accepted: 01/13/2021] [Indexed: 12/18/2022]
Abstract
The development of disposable sensors that can be easily adapted to every analytical problem is currently a hot topic that is revolutionizing many areas of science and technology. The need for decentralized analytical measurements at real time is increasing for solving problems in areas such as environment pollution, medical diagnostic, food quality assurance, etc., requiring fast action. Despite some current limitations of these devices, such as insufficient detection capability at (ultra)trace level and risk of interferent effects due to matrix, they allow low-cost analysis, portability, low sample consumption, and fast response. In the last years, development of paper-based analytical devices has undergone a dramatic increase for on-site detection of toxic metal ions and other pollutants. Along with the great availability of cellulose substrates, the immobilization of receptors providing enhanced recognition ability, such as a variety of nanomaterials, has driven the design of novel sensing approaches. This review is aimed at describing and discussing the different possibilities arisen with the use of different nanoreceptors (e.g., plasmonic nanoparticles, quantum dots, carbon-based fluorescent nanoparticles, etc.) immobilized onto cellulose-based substrates for trace element detection, their advantages and shortcomings.
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Affiliation(s)
- Carlos Bendicho
- Centro de Investigación Mariña, Universidade de Vigo, Departamento de Química Analítica y Alimentaria, Grupo QA2, 36310 Vigo, Spain; (I.L.); (F.P.-P.); (I.d.l.C.); (V.R.)
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Pena-Pereira F, Bendicho C, Pavlović DM, Martín-Esteban A, Díaz-Álvarez M, Pan Y, Cooper J, Yang Z, Safarik I, Pospiskova K, Segundo MA, Psillakis E. Miniaturized analytical methods for determination of environmental contaminants of emerging concern - A review. Anal Chim Acta 2020; 1158:238108. [PMID: 33863416 DOI: 10.1016/j.aca.2020.11.040] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 11/26/2020] [Accepted: 11/27/2020] [Indexed: 01/09/2023]
Abstract
The determination of contaminants of emerging concern (CECs) in environmental samples has become a challenging and critical issue. The present work focuses on miniaturized analytical strategies reported in the literature for the determination of CECs. The first part of the review provides brief overview of CECs whose monitoring in environmental samples is of particular significance, namely personal care products, pharmaceuticals, endocrine disruptors, UV-filters, newly registered pesticides, illicit drugs, disinfection by-products, surfactants, high technology rare earth elements, and engineered nanomaterials. Besides, an overview of downsized sample preparation approaches reported in the literature for the determination of CECs in environmental samples is provided. Particularly, analytical methodologies involving microextraction approaches used for the enrichment of CECs are discussed. Both solid phase- and liquid phase-based microextraction techniques are highlighted devoting special attention to recently reported approaches. Special emphasis is placed on newly developed materials used for extraction purposes in microextraction techniques. In addition, recent contributions involving miniaturized analytical flow techniques for the determination of CECs are discussed. Besides, the strengths, weaknesses, opportunities and threats of point of need and portable devices have been identified and critically compared with chromatographic methods coupled to mass chromatography. Finally, challenging aspects regarding miniaturized analytical methods for determination of CECs are critically discussed.
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Affiliation(s)
- Francisco Pena-Pereira
- Centro de Investigación Mariña, Universidade de Vigo, Departamento de Química Analítica e Alimentaria, Grupo QA2, Edificio CC Experimentais, Campus de Vigo, As Lagoas, Marcosende, 36310, Vigo, Spain.
| | - Carlos Bendicho
- Centro de Investigación Mariña, Universidade de Vigo, Departamento de Química Analítica e Alimentaria, Grupo QA2, Edificio CC Experimentais, Campus de Vigo, As Lagoas, Marcosende, 36310, Vigo, Spain.
| | - Dragana Mutavdžić Pavlović
- Department of Analytical Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev Trg 19, Zagreb, 10000, Croatia
| | - Antonio Martín-Esteban
- Departamento de Medio Ambiente y Agronomía, INIA, Carretera de A Coruña Km 7.5, Madrid, E-28040, Spain
| | - Myriam Díaz-Álvarez
- Departamento de Medio Ambiente y Agronomía, INIA, Carretera de A Coruña Km 7.5, Madrid, E-28040, Spain
| | - Yuwei Pan
- Cranfield Water Science Institute, Cranfield University, Cranfield, MK43 0AL, United Kingdom; School of Engineering, University of Glasgow, G12 8LT, United Kingdom
| | - Jon Cooper
- School of Engineering, University of Glasgow, G12 8LT, United Kingdom
| | - Zhugen Yang
- Cranfield Water Science Institute, Cranfield University, Cranfield, MK43 0AL, United Kingdom
| | - Ivo Safarik
- Department of Nanobiotechnology, Biology Centre, ISB, CAS, Na Sadkach 7, 370 05, Ceske Budejovice, Czech Republic; Regional Centre of Advanced Technologies and Materials, Palacky University, Slechtitelu 27, 783 71, Olomouc, Czech Republic; Department of Magnetism, Institute of Experimental Physics, SAS, Watsonova 47, 040 01, Kosice, Slovakia
| | - Kristyna Pospiskova
- Department of Nanobiotechnology, Biology Centre, ISB, CAS, Na Sadkach 7, 370 05, Ceske Budejovice, Czech Republic; Regional Centre of Advanced Technologies and Materials, Palacky University, Slechtitelu 27, 783 71, Olomouc, Czech Republic
| | - Marcela A Segundo
- LAQV/REQUIMTE, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, R Jorge Viterbo Ferreira, 228, 4050-313, Porto, Portugal
| | - Elefteria Psillakis
- Laboratory of Aquatic Chemistry, School of Environmental Engineering, Polytechnioupolis, Technical University of Crete, GR-73100, Chania, Crete, Greece
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Abstract
![]()
Green
analytical chemistry focuses on making analytical procedures
more environmentally benign and safer to humans. The amounts and toxicity
of reagents, generated waste, energy requirements, the number of procedural
steps, miniaturization, and automation are just a few of the multitude
of criteria considered when assessing an analytical methodology’s
greenness. The use of greenness assessment criteria requires dedicated
tools. We propose the Analytical GREEnness calculator, a comprehensive,
flexible, and straightforward assessment approach that provides an
easily interpretable and informative result. The assessment criteria
are taken from the 12 principles of green analytical chemistry (SIGNIFICANCE)
and are transformed into a unified 0–1 scale. The final score
is calculated based on the SIGNIFICANCE principles. The result is
a pictogram indicating the final score, performance of the analytical
procedure in each criterion, and weights assigned by the user. Freely
available software makes the assessment procedure straightforward.
It is open-source and downloadable from https://mostwiedzy.pl/AGREE.
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Affiliation(s)
- Francisco Pena-Pereira
- Analytical and Food Chemistry Department, Faculty of Chemistry, University of Vigo, Campus As Lagoas-Marcosende s/n, 36310 Vigo, Spain
| | - Wojciech Wojnowski
- Department of Analytical Chemistry, Chemical Faculty, Gdańsk University of Technology (GUT), ul. G. Narutowicza 11/12, 80-233 Gdańsk, Poland
| | - Marek Tobiszewski
- Department of Analytical Chemistry, Chemical Faculty, Gdańsk University of Technology (GUT), ul. G. Narutowicza 11/12, 80-233 Gdańsk, Poland
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Pena-Pereira F, Matesanz Ó, Lavilla I, Bendicho C. A paper-based gas sensor for simultaneous noninstrumental colorimetric detection of nitrite and sulfide in waters. J Sep Sci 2020; 43:1908-1914. [PMID: 32079045 DOI: 10.1002/jssc.201901339] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2020] [Revised: 02/15/2020] [Accepted: 02/16/2020] [Indexed: 12/20/2022]
Abstract
The use of paper-based devices in combination with noninstrumental detection systems is becoming increasingly important in the analytical field due to its simplicity, rapidity, and low cost. However, their use for determination of volatile analyte derivatives is still relatively scarce. The present work reports on the assessment of a paper-based gas-sensing approach for the simultaneous noninstrumental colorimetric detection of nitrite and sulfide. Colorimetric systems based on the Griess and methylene blue assays, formation of colored metallic sulfides, and interaction/reaction with in situ generated metallic nanoparticles were preliminary evaluated. Then, the effect of experimental variables affecting the analytical performance of the paper-based gas sensor was studied with two digitization systems, namely a scanner and a smartphone. Under optimal conditions, the developed system yielded limits of detection of 0.055 and 0.005 mg/L for nitrite and sulfide, respectively. The repeatability, expressed as relative standard deviation, was found to be 5.9 and 6.7% for nitrite and sulfide, respectively. The proposed method was finally applied to the analysis of water samples, showing recoveries in the range of 95-105%.
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Affiliation(s)
- Francisco Pena-Pereira
- Analytical and Food Chemistry Department, Faculty of Chemistry, Marine Research Center (CIM), University of Vigo, Campus As Lagoas-Marcosende s/n, Vigo, 36310, Spain
| | - Óscar Matesanz
- Analytical and Food Chemistry Department, Faculty of Chemistry, Marine Research Center (CIM), University of Vigo, Campus As Lagoas-Marcosende s/n, Vigo, 36310, Spain
| | - Isela Lavilla
- Analytical and Food Chemistry Department, Faculty of Chemistry, Marine Research Center (CIM), University of Vigo, Campus As Lagoas-Marcosende s/n, Vigo, 36310, Spain
| | - Carlos Bendicho
- Analytical and Food Chemistry Department, Faculty of Chemistry, Marine Research Center (CIM), University of Vigo, Campus As Lagoas-Marcosende s/n, Vigo, 36310, Spain
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Bystrzanowska M, Tobiszewski M, Pena-Pereira F, Simeonov V. Searching for Solvents with an Increased Carbon Dioxide Solubility Using Multivariate Statistics. Molecules 2020; 25:molecules25051156. [PMID: 32150808 PMCID: PMC7179105 DOI: 10.3390/molecules25051156] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 03/03/2020] [Accepted: 03/03/2020] [Indexed: 11/19/2022] Open
Abstract
Ionic liquids (ILs) are used in various fields of chemistry. One of them is CO2 capture, a process that is quite well described. The solubility of CO2 in ILs can be used as a model to investigate gas absorption processes. The aim is to find the relationships between the solubility of CO2 and other variables—physicochemical properties and parameters related to greenness. In this study, 12 variables are used to describe a dataset consisting of 26 ILs and 16 molecular solvents. We used a cluster analysis, a principal component analysis, and a K-means hierarchical clustering to find the patterns in the dataset and the discriminators between the clusters of compounds. The results showed that ILs and molecular solvents form two well-separated groups, and the variables were well separated into greenness-related and physicochemical properties. Such patterns suggest that the modeling of greenness properties and of the solubility of CO2 on physicochemical properties can be difficult.
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Affiliation(s)
- Marta Bystrzanowska
- Department of Analytical Chemistry, Faculty of Chemistry, Gdańsk University of Technology (GUT), 11/12 G. Narutowicza St., 80-233 Gdańsk, Poland;
| | - Marek Tobiszewski
- Department of Analytical Chemistry, Faculty of Chemistry, Gdańsk University of Technology (GUT), 11/12 G. Narutowicza St., 80-233 Gdańsk, Poland;
- Correspondence: or ; Tel.: +48-583472194
| | - Francisco Pena-Pereira
- Department of Analytical and Food Chemistry, Faculty of Chemistry, University of Vigo, Campus As Lagoas-Marcosende s/n, 36310 Vigo, Spain;
| | - Vasil Simeonov
- Chair of Analytical Chemistry, Faculty of Pharmacy and Chemistry, University of Sofia “St. Kl. Okhridski”, J.Bourchier Blvd. 1,1164 Sofia, Bulgaria;
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Pena-Pereira F, Velázquez A, Lavilla I, Bendicho C. A paper-based colorimetric assay with non-instrumental detection for determination of boron in water samples. Talanta 2020; 208:120365. [DOI: 10.1016/j.talanta.2019.120365] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Revised: 09/13/2019] [Accepted: 09/15/2019] [Indexed: 01/28/2023]
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Bystrzanowska M, Pena-Pereira F, Marcinkowski Ł, Tobiszewski M. How green are ionic liquids? - A multicriteria decision analysis approach. Ecotoxicol Environ Saf 2019; 174:455-458. [PMID: 30852310 DOI: 10.1016/j.ecoenv.2019.03.014] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Revised: 03/02/2019] [Accepted: 03/04/2019] [Indexed: 05/12/2023]
Abstract
Due to various desirable physicochemical properties, ionic liquids (ILs) are still gaining in popularity. ILs have been recurrently considered green solvents. However, environmental, health and safety assessments of ILs have raised certain doubts about their benignness, and their greenness status is currently unclear. To clarify the situation on their greenness, we perform a comprehensive assessment of more than 300 commercially available ILs. We apply multicriteria decision analysis, the tool that allows ranking many alternatives according to relevant criteria. They are toxicity towards various organisms, biodegradability, hazard statements and precautionary measures during their handling. We incorporated organic solvents to rankings, as their greenness is better described, so they serve as greenness reference points. The ranking results obtained considering the whole set of criteria show that ILs are placed between recommended polar solvents and problematic/undesirable non polar organic solvents in terms of greenness. However, the exclusion of toxicity data due to unavailability of endpoints results in assessment of ILs as greener than most of organic solvents.
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Affiliation(s)
- Marta Bystrzanowska
- Department of Analytical Chemistry, Faculty of Chemistry, Gdańsk University of Technology (GUT), 11/12 G. Narutowicza St., 80-233 Gdańsk, Poland
| | - Francisco Pena-Pereira
- Department of Analytical and Food Chemistry, Faculty of Chemistry, University of Vigo, Campus As Lagoas - Marcosende s/n, 36310 Vigo, Spain
| | - Łukasz Marcinkowski
- Department of Physical Chemistry, Faculty of Chemistry, Gdańsk University of Technology (GUT), 11/12 G. Narutowicza St., 80-233 Gdańsk, Poland
| | - Marek Tobiszewski
- Department of Analytical Chemistry, Faculty of Chemistry, Gdańsk University of Technology (GUT), 11/12 G. Narutowicza St., 80-233 Gdańsk, Poland.
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García-Figueroa A, Pena-Pereira F, Lavilla I, Bendicho C. Speciation of gold nanoparticles and total gold in natural waters: A novel approach based on naked magnetite nanoparticles in combination with ascorbic acid. Talanta 2019; 193:176-183. [DOI: 10.1016/j.talanta.2018.09.092] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Revised: 09/21/2018] [Accepted: 09/24/2018] [Indexed: 01/09/2023]
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Łuczyńska G, Pena-Pereira F, Tobiszewski M, Namieśnik J. Expectation-Maximization Model for Substitution of Missing Values Characterizing Greenness of Organic Solvents. Molecules 2018; 23:molecules23061292. [PMID: 29843437 PMCID: PMC6100055 DOI: 10.3390/molecules23061292] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Revised: 05/21/2018] [Accepted: 05/25/2018] [Indexed: 11/16/2022] Open
Abstract
Organic solvents are ubiquitous in chemical laboratories and the Green Chemistry trend forces their detailed assessments in terms of greenness. Unfortunately, some of them are not fully characterized, especially in terms of toxicological endpoints that are time consuming and expensive to be determined. Missing values in the datasets are serious obstacles, as they prevent the full greenness characterization of chemicals. A featured method to deal with this problem is the application of Expectation-Maximization algorithm. In this study, the dataset consists of 155 solvents that are characterized by 13 variables is treated with Expectation-Maximization algorithm to predict missing data for toxicological endpoints, bioavailability, and biodegradability data. The approach may be particularly useful for substitution of missing values of environmental, health, and safety parameters of new solvents. The presented approach has high potential to deal with missing values, while assessing environmental, health, and safety parameters of other chemicals.
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Affiliation(s)
- Gabriela Łuczyńska
- Division of Applied Mathematics and Probability, Institute of Mathematics, Faculty of Mathematics, University of Gdansk, 8 J. Bażyńskiego St., 80-309 Gdańsk, Poland.
- Department of Analytical and Food Chemistry, Faculty of Chemistry, University of Vigo, Campus As Lagoas-Marcosende s/n, 36310 Vigo, Spain.
| | - Francisco Pena-Pereira
- Department of Analytical and Food Chemistry, Faculty of Chemistry, University of Vigo, Campus As Lagoas-Marcosende s/n, 36310 Vigo, Spain.
| | - Marek Tobiszewski
- Department of Analytical Chemistry, Chemical Faculty, Gdańsk University of Technology (GUT), 11/12 G. Narutowicza St., 80-233 Gdańsk, Poland.
| | - Jacek Namieśnik
- Department of Analytical Chemistry, Chemical Faculty, Gdańsk University of Technology (GUT), 11/12 G. Narutowicza St., 80-233 Gdańsk, Poland.
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Tobiszewski M, Nedyalkova M, Madurga S, Pena-Pereira F, Namieśnik J, Simeonov V. Pre-selection and assessment of green organic solvents by clustering chemometric tools. Ecotoxicol Environ Saf 2018; 147:292-298. [PMID: 28850812 DOI: 10.1016/j.ecoenv.2017.08.057] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2017] [Revised: 08/20/2017] [Accepted: 08/21/2017] [Indexed: 06/07/2023]
Abstract
The study presents the result of the application of chemometric tools for selection of physicochemical parameters of solvents for predicting missing variables - bioconcentration factors, water-octanol and octanol-air partitioning constants. EPI Suite software was successfully applied to predict missing values for solvents commonly considered as "green". Values for logBCF, logKOW and logKOA were modelled for 43 rather nonpolar solvents and 69 polar ones. Application of multivariate statistics was also proved to be useful in the assessment of the obtained modelling results. The presented approach can be one of the first steps and support tools in the assessment of chemicals in terms of their greenness.
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Affiliation(s)
- Marek Tobiszewski
- Department of Analytical Chemistry, Chemical Faculty, Gdańsk University of Technology (GUT), 11/12 G. Narutowicza St., 80-233 Gdańsk, Poland
| | - Miroslava Nedyalkova
- Faculty of Chemistry and Pharmacy, University of Sofia "St. Kl. Okhridski", 1164 Sofia, J. Bourchier Blvd. 1, Bulgaria.
| | - Sergio Madurga
- Materials Science and Physical Chemistry Department & Research Institute of Theoretical and Computational Chemistry (IQTCUB) of Barcelona University (UB), C/ Martí i Franquès, 1, 08028 Barcelona, Catalonia, Spain
| | - Francisco Pena-Pereira
- Analytical and Food Chemistry Department, Faculty of Chemistry, University of Vigo, Campus As Lagoas-Marcosende s/n, 36310 Vigo, Spain
| | - Jacek Namieśnik
- Department of Analytical Chemistry, Chemical Faculty, Gdańsk University of Technology (GUT), 11/12 G. Narutowicza St., 80-233 Gdańsk, Poland
| | - Vasil Simeonov
- Faculty of Chemistry and Pharmacy, University of Sofia "St. Kl. Okhridski", 1164 Sofia, J. Bourchier Blvd. 1, Bulgaria
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Filgueiras A, Pena-Pereira F, Romero V, Costas-Mora I, Bendicho C, Lavilla I. Simultaneous ultrasound-assisted iodide oxidation and liquid-liquid microextraction for rapid quality control of iodized salts by UV–vis micro-spectrophotometry. Microchem J 2017. [DOI: 10.1016/j.microc.2017.04.035] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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18
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de la Calle I, Pena-Pereira F, Lavilla I, Bendicho C. Liquid-phase microextraction combined with graphite furnace atomic absorption spectrometry: A review. Anal Chim Acta 2016; 936:12-39. [DOI: 10.1016/j.aca.2016.06.046] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2016] [Revised: 06/26/2016] [Accepted: 06/28/2016] [Indexed: 12/19/2022]
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Tobiszewski M, Pena-Pereira F, Orłowski A, Namieśnik J. A standard analytical method as the common good and pollution abatement measure. Trends Analyt Chem 2016. [DOI: 10.1016/j.trac.2015.08.011] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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20
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Pena-Pereira F, Lavilla I, Bendicho C. Paper-based analytical device for instrumental-free detection of thiocyanate in saliva as a biomarker of tobacco smoke exposure. Talanta 2016; 147:390-6. [PMID: 26592623 DOI: 10.1016/j.talanta.2015.10.013] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2015] [Revised: 10/02/2015] [Accepted: 10/05/2015] [Indexed: 01/22/2023]
Abstract
This work describes a fast and simple assay for in situ detection of thiocyanate, i.e., a biomarker of tobacco smoke exposure, in human saliva. The assay is based on the formation of an iron(III)-thiocyanate colored complex in a paper-based sensing platform and subsequent image analysis using a scanner as detection device. Experimental parameters influencing the color intensity of the complex were fully evaluated, including the selection of detection conditions, type of paper substrate, test zone dimensions and composition as well as the stability of the paper-based device. Under optimal conditions, the detection limit was 0.06mM of thiocyanate, and the repeatability, expressed as relative standard deviation, was 3%. The proposed method, characterized by its simplicity, portability and low sample consumption, was applied to the detection of thiocyanate in a series of human saliva samples. Average thiocyanate levels in the ranges 0.28-0.87mM and 0.78-4.28mM were found for non-smokers and smokers, respectively. Recovery studies were carried out at two concentration levels, showing recovery values in the range of 96.1-103.6%.
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Affiliation(s)
- Francisco Pena-Pereira
- Analytical and Food Chemistry Department, Faculty of Chemistry, University of Vigo, Campus As Lagoas-Marcosende s/n, 36310 Vigo, Spain
| | - Isela Lavilla
- Analytical and Food Chemistry Department, Faculty of Chemistry, University of Vigo, Campus As Lagoas-Marcosende s/n, 36310 Vigo, Spain
| | - Carlos Bendicho
- Analytical and Food Chemistry Department, Faculty of Chemistry, University of Vigo, Campus As Lagoas-Marcosende s/n, 36310 Vigo, Spain.
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Marcinkowski Ł, Pena-Pereira F, Kloskowski A, Namieśnik J. Opportunities and shortcomings of ionic liquids in single-drop microextraction. Trends Analyt Chem 2015. [DOI: 10.1016/j.trac.2015.03.024] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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22
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Pena-Pereira F, Marcinkowski Ł, Kloskowski A, Namieśnik J. Ionogel fibres of bis(trifluoromethanesulfonyl)imide anion-based ionic liquids for the headspace solid-phase microextraction of chlorinated organic pollutants. Analyst 2015; 140:7417-22. [DOI: 10.1039/c5an01337b] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A procedure for the immobilization of different ionic liquids on a SPME fibre was developed and optimized. A hybrid sorbent was successfully applied for the isolation of chlorinated organics from water samples.
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Affiliation(s)
- F. Pena-Pereira
- Department of Analytical Chemistry
- Chemical Faculty
- Gdańsk University of Technology (GUT)
- 80-233 Gdańsk
- Poland
| | - Ł. Marcinkowski
- Department of Physical Chemistry
- Chemical Faculty
- Gdańsk University of Technology (GUT)
- 80-233 Gdańsk
- Poland
| | - A. Kloskowski
- Department of Physical Chemistry
- Chemical Faculty
- Gdańsk University of Technology (GUT)
- 80-233 Gdańsk
- Poland
| | - J. Namieśnik
- Department of Analytical Chemistry
- Chemical Faculty
- Gdańsk University of Technology (GUT)
- 80-233 Gdańsk
- Poland
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Pena-Pereira F, Marcinkowski Ł, Kloskowski A, Namieśnik J. Silica-Based Ionogels: Nanoconfined Ionic Liquid-Rich Fibers for Headspace Solid-Phase Microextraction Coupled with Gas Chromatography–Barrier Discharge Ionization Detection. Anal Chem 2014; 86:11640-8. [DOI: 10.1021/ac502666f] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Francisco Pena-Pereira
- Analytical
and Food Chemistry Department, Faculty of Chemistry, University of Vigo, Campus As Lagoas-Marcosende s/n, 36310 Vigo, Spain
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24
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Pena-Pereira F, Namieśnik J. Ionic liquids and deep eutectic mixtures: sustainable solvents for extraction processes. ChemSusChem 2014; 7:1784-1800. [PMID: 24811900 DOI: 10.1002/cssc.201301192] [Citation(s) in RCA: 209] [Impact Index Per Article: 20.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2013] [Revised: 02/26/2014] [Indexed: 06/03/2023]
Abstract
In recent years, ionic liquids and deep eutectic mixtures have demonstrated great potential in extraction processes relevant to several scientific and technological activities. This review focuses on the applicability of these sustainable solvents in a variety of extraction techniques, including but not limited to liquid- and solid-phase (micro) extraction, microwave-assisted extraction, ultrasound-assisted extraction and pressurized liquid extraction. Selected applications of ionic liquids and deep eutectic mixtures on analytical method development, removal of environmental pollutants, selective isolation, and recovery of target compounds, purification of fuels, and azeotrope breaking are described and discussed.
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Affiliation(s)
- Francisco Pena-Pereira
- Department of Analytical Chemistry, Chemical Faculty, Gdańsk University of Technology (GUT) ul. G. Naturowicza 11/12, 80-233 Gdańsk (Poland); Department of Analytical and Food Chemistry, Faculty of Chemistry, University of Vigo, Campus As Lagoas-Marcosende s/n, 36310 Vigo (Spain).
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Pena-Pereira F, Duarte RM, Trindade T, Duarte AC. Determination of anionic surface active agents using silica coated magnetite nanoparticles modified with cationic surfactant aggregates. J Chromatogr A 2013; 1299:25-32. [DOI: 10.1016/j.chroma.2013.05.040] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2013] [Revised: 05/10/2013] [Accepted: 05/16/2013] [Indexed: 11/27/2022]
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26
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Pena-Pereira F, Duarte RM, Duarte AC. Immobilization strategies and analytical applications for metallic and metal-oxide nanomaterials on surfaces. Trends Analyt Chem 2012. [DOI: 10.1016/j.trac.2012.07.015] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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27
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Costas-Mora I, Romero V, Pena-Pereira F, Lavilla I, Bendicho C. Quantum Dots Confined in an Organic Drop as Luminescent Probes for Detection of Selenium by Microfluorospectrometry after Hydridation: Study of the Quenching Mechanism and Analytical Performance. Anal Chem 2012; 84:4452-9. [DOI: 10.1021/ac300221s] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Isabel Costas-Mora
- Departamento de Química Analítica
y Alimentaria,
Área de Química Analítica, Facultad de Química, Universidad de Vigo, Campus As Lagoas-Marcosende s/n,
36310 Vigo, Spain
| | - Vanesa Romero
- Departamento de Química Analítica
y Alimentaria,
Área de Química Analítica, Facultad de Química, Universidad de Vigo, Campus As Lagoas-Marcosende s/n,
36310 Vigo, Spain
| | - Francisco Pena-Pereira
- Departamento de Química Analítica
y Alimentaria,
Área de Química Analítica, Facultad de Química, Universidad de Vigo, Campus As Lagoas-Marcosende s/n,
36310 Vigo, Spain
| | - Isela Lavilla
- Departamento de Química Analítica
y Alimentaria,
Área de Química Analítica, Facultad de Química, Universidad de Vigo, Campus As Lagoas-Marcosende s/n,
36310 Vigo, Spain
| | - Carlos Bendicho
- Departamento de Química Analítica
y Alimentaria,
Área de Química Analítica, Facultad de Química, Universidad de Vigo, Campus As Lagoas-Marcosende s/n,
36310 Vigo, Spain
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Pena-Pereira F, Costas-Mora I, Lavilla I, Bendicho C. Rapid screening of polycyclic aromatic hydrocarbons (PAHs) in waters by directly suspended droplet microextraction-microvolume fluorospectrometry. Talanta 2011; 89:217-22. [PMID: 22284483 DOI: 10.1016/j.talanta.2011.11.084] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2011] [Revised: 11/22/2011] [Accepted: 11/27/2011] [Indexed: 11/17/2022]
Abstract
A rapid and simple screening method for polycyclic aromatic hydrocarbons (PAHs) in water samples is proposed. The method is based on the combination of a miniaturized sample preparation approach, namely, directly suspended droplet microextraction (DSDME), and microvolume fluorospectrometry. Benzo[a]pyrene (BaP) was used as the model compound for screening purposes. Under optimal conditions, a detection limit of 0.024 μg L(-1) and an enrichment factor of 159 were obtained for BaP in 5 min. The repeatability, expressed as relative standard deviation (RSD), was 4.9% (n=8). The unreliability region of the screening method was 0.54-0.67 μg L(-1), by using a cut-off value of 0.6 μg L(-1) of BaP. Finally, the proposed method was applied to the in situ achievement of the binary "yes/no" response for PAHs in different water samples and recovery studies were performed at three different levels, with BaP recoveries in the range of 93-104%.
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Affiliation(s)
- Francisco Pena-Pereira
- Departamento de Química Analítica y Alimentaria, Área de Química Analítica, Facultad de Química, Universidad de Vigo, Campus As Lagoas-Marcosende s/n, 36310 Vigo, Spain
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Cabaleiro N, Pena-Pereira F, de la Calle I, Bendicho C, Lavilla I. Determination of triclosan by cuvetteless UV–vis micro-spectrophotometry following simultaneous ultrasound assisted emulsification–microextraction with derivatization: Use of a micellar-ionic liquid as extractant. Microchem J 2011. [DOI: 10.1016/j.microc.2011.05.010] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Pena-Pereira F, Cabaleiro N, de la Calle I, Costas M, Gil S, Lavilla I, Bendicho C. Directly suspended droplet microextraction in combination with microvolume UV–vis spectrophotometry for determination of phosphate. Talanta 2011; 85:1100-4. [DOI: 10.1016/j.talanta.2011.05.032] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2011] [Revised: 05/09/2011] [Accepted: 05/17/2011] [Indexed: 10/18/2022]
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31
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Costas-Mora I, Romero V, Pena-Pereira F, Lavilla I, Bendicho C. Quantum Dot-Based Headspace Single-Drop Microextraction Technique for Optical Sensing of Volatile Species. Anal Chem 2011; 83:2388-93. [DOI: 10.1021/ac103223e] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Isabel Costas-Mora
- Departamento de Química Analítica y Alimentaria, Área de Química Analítica, Facultad de Química, Universidad de Vigo, Campus As Lagoas-Marcosende s/n, 36310 Vigo, Spain
| | - Vanesa Romero
- Departamento de Química Analítica y Alimentaria, Área de Química Analítica, Facultad de Química, Universidad de Vigo, Campus As Lagoas-Marcosende s/n, 36310 Vigo, Spain
| | - Francisco Pena-Pereira
- Departamento de Química Analítica y Alimentaria, Área de Química Analítica, Facultad de Química, Universidad de Vigo, Campus As Lagoas-Marcosende s/n, 36310 Vigo, Spain
| | - Isela Lavilla
- Departamento de Química Analítica y Alimentaria, Área de Química Analítica, Facultad de Química, Universidad de Vigo, Campus As Lagoas-Marcosende s/n, 36310 Vigo, Spain
| | - Carlos Bendicho
- Departamento de Química Analítica y Alimentaria, Área de Química Analítica, Facultad de Química, Universidad de Vigo, Campus As Lagoas-Marcosende s/n, 36310 Vigo, Spain
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Sáenz M, Alvarado J, Pena-Pereira F, Senra-Ferreiro S, Lavilla I, Bendicho C. Liquid-phase microextraction with in-drop derivatization combined with microvolume fluorospectrometry for free and hydrolyzed formaldehyde determination in textile samples. Anal Chim Acta 2011; 687:50-5. [DOI: 10.1016/j.aca.2010.12.006] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2010] [Revised: 12/02/2010] [Accepted: 12/03/2010] [Indexed: 01/21/2023]
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Pena-Pereira F, Lavilla I, Bendicho C. Liquid-phase microextraction approaches combined with atomic detection: A critical review. Anal Chim Acta 2010; 669:1-16. [DOI: 10.1016/j.aca.2010.04.050] [Citation(s) in RCA: 87] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2010] [Revised: 04/20/2010] [Accepted: 04/23/2010] [Indexed: 11/28/2022]
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Pena-Pereira F, Senra-Ferreiro S, Lavilla I, Bendicho C. Determination of iodate in waters by cuvetteless UV–vis micro-spectrophotometry after liquid-phase microextraction. Talanta 2010; 81:625-9. [DOI: 10.1016/j.talanta.2009.12.053] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2009] [Revised: 12/21/2009] [Accepted: 12/24/2009] [Indexed: 10/20/2022]
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Pena-Pereira F, Lavilla I, Bendicho C. Colorimetric assay for determination of trimethylamine-nitrogen (TMA-N) in fish by combining headspace-single-drop microextraction and microvolume UV–vis spectrophotometry. Food Chem 2010. [DOI: 10.1016/j.foodchem.2009.07.038] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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37
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Lavilla I, Pena-Pereira F, Gil S, Costas M, Bendicho C. Microvolume turbidimetry for rapid and sensitive determination of the acid labile sulfide fraction in waters after headspace single-drop microextraction with in situ generation of volatile hydrogen sulfide. Anal Chim Acta 2009; 647:112-6. [DOI: 10.1016/j.aca.2009.05.035] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2009] [Revised: 05/25/2009] [Accepted: 05/25/2009] [Indexed: 11/28/2022]
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Pena-Pereira F, Lavilla I, Bendicho C. Headspace single-drop microextraction coupled to microvolume UV–vis spectrophotometry for iodine determination. Anal Chim Acta 2009; 631:223-8. [DOI: 10.1016/j.aca.2008.10.048] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2008] [Revised: 10/02/2008] [Accepted: 10/16/2008] [Indexed: 10/21/2022]
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