Live synthesis of selective carbon dots as fluorescent probes for cobalt determination in water with an automatic microanalyzer

A new strategy integrating the straight synthesis of carbon dots (CDs) and their direct use for the determination of heavy metals by means of fuorescence quenching is presented. The proposal consists of a modular analyzer, which includes a low temperature co-fred ceramics (LTCC) microreactor for the...

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Autores: Pascual-Esco, Alex, Lleonart, Pere, Calvo-López, Antonio|||0000-0003-2728-8676, Alonso-Chamarro, Julián|||0000-0002-6804-6027, Puyol, Mar|||0000-0002-9274-2284
Tipo de recurso: artículo
Fecha de publicación:2023
País:España
Institución:Universitat Autònoma de Barcelona
Repositorio:Dipòsit Digital de Documents de la UAB
Idioma:inglés
OAI Identifier:oai:ddd.uab.cat:283588
Acceso en línea:https://ddd.uab.cat/record/283588
https://dx.doi.org/urn:doi:10.1007/s00604-023-05975-w
Access Level:acceso abierto
Palabra clave:Carbon dots
Cobalt determination
Fluorescence quenching
Microfluidics
Microreactor
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spelling Live synthesis of selective carbon dots as fluorescent probes for cobalt determination in water with an automatic microanalyzerPascual-Esco, AlexLleonart, PereCalvo-López, Antonio|||0000-0003-2728-8676Alonso-Chamarro, Julián|||0000-0002-6804-6027Puyol, Mar|||0000-0002-9274-2284Carbon dotsCobalt determinationFluorescence quenchingMicrofluidicsMicroreactorA new strategy integrating the straight synthesis of carbon dots (CDs) and their direct use for the determination of heavy metals by means of fuorescence quenching is presented. The proposal consists of a modular analyzer, which includes a low temperature co-fred ceramics (LTCC) microreactor for the synthesis of CDs and a cyclic olefn copolymer (COC) microfuidic platform, which automatically performs a reverse fow injection analysis (rFIA) protocol for the determination of heavy metal ions in water by CD fuorescence quenching. As a proof of concept, nitrogen-doped CDs were synthesized from acrylic acid and ethylenediamine (ED) with quantum yields (QYs) of up to 44%, which are selective to cobalt. With the described system, we synthesized homogeneous CDs without the need for further purifcation and with the minimum consumption of reagents, and optimized fuorescence measurements can be performed with freshly obtained luminescent nanomaterials that have not undergone decomposition processes. They have an averagehydrodynamic diameter of 4.2±0.9 nm and maximum excitation and emission wavelengths at 358 nm and 452 nm, respectively. The system allows the automatic dilution and bufering of the synthesized CDs and the sample prior to the determination of cobalt. The concentration of cobalt was determined with good sensitivity and a limit of detection of 7 μg·L-1 with a linear range of 0.02-1 mg·L-1 of Co2+. Spiked tap water and river water samples were analyzed, obtaining recovery from 98 to 104%. This demonstrates the potential of the equipment as an efcient on-site control system for heavy metal monitoring in water. 22023-01-0120232023-01-01Articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://ddd.uab.cat/record/283588https://dx.doi.org/urn:doi:10.1007/s00604-023-05975-wreponame:Dipòsit Digital de Documents de la UABinstname:Universitat Autònoma de BarcelonaInglésengAgencia Estatal de Investigación https://doi.org/10.13039/501100011033 PRE2018-084834Agencia Estatal de Investigación https://doi.org/10.13039/501100011033 CTQ2017-85011-RAgencia Estatal de Investigación https://doi.org/10.13039/501100011033 PID2020-117216RB-I00Agència de Gestió d'Ajuts Universitaris i de Recerca https://doi.org/10.13039/501100003030 2021/SGR-00124open accesshttp://purl.org/coar/access_right/c_abf2Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.https://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:ddd.uab.cat:2835882026-06-06T12:50:31Z
dc.title.none.fl_str_mv Live synthesis of selective carbon dots as fluorescent probes for cobalt determination in water with an automatic microanalyzer
title Live synthesis of selective carbon dots as fluorescent probes for cobalt determination in water with an automatic microanalyzer
spellingShingle Live synthesis of selective carbon dots as fluorescent probes for cobalt determination in water with an automatic microanalyzer
Pascual-Esco, Alex
Carbon dots
Cobalt determination
Fluorescence quenching
Microfluidics
Microreactor
title_short Live synthesis of selective carbon dots as fluorescent probes for cobalt determination in water with an automatic microanalyzer
title_full Live synthesis of selective carbon dots as fluorescent probes for cobalt determination in water with an automatic microanalyzer
title_fullStr Live synthesis of selective carbon dots as fluorescent probes for cobalt determination in water with an automatic microanalyzer
title_full_unstemmed Live synthesis of selective carbon dots as fluorescent probes for cobalt determination in water with an automatic microanalyzer
title_sort Live synthesis of selective carbon dots as fluorescent probes for cobalt determination in water with an automatic microanalyzer
dc.creator.none.fl_str_mv Pascual-Esco, Alex
Lleonart, Pere
Calvo-López, Antonio|||0000-0003-2728-8676
Alonso-Chamarro, Julián|||0000-0002-6804-6027
Puyol, Mar|||0000-0002-9274-2284
author Pascual-Esco, Alex
author_facet Pascual-Esco, Alex
Lleonart, Pere
Calvo-López, Antonio|||0000-0003-2728-8676
Alonso-Chamarro, Julián|||0000-0002-6804-6027
Puyol, Mar|||0000-0002-9274-2284
author_role author
author2 Lleonart, Pere
Calvo-López, Antonio|||0000-0003-2728-8676
Alonso-Chamarro, Julián|||0000-0002-6804-6027
Puyol, Mar|||0000-0002-9274-2284
author2_role author
author
author
author
dc.subject.none.fl_str_mv Carbon dots
Cobalt determination
Fluorescence quenching
Microfluidics
Microreactor
topic Carbon dots
Cobalt determination
Fluorescence quenching
Microfluidics
Microreactor
description A new strategy integrating the straight synthesis of carbon dots (CDs) and their direct use for the determination of heavy metals by means of fuorescence quenching is presented. The proposal consists of a modular analyzer, which includes a low temperature co-fred ceramics (LTCC) microreactor for the synthesis of CDs and a cyclic olefn copolymer (COC) microfuidic platform, which automatically performs a reverse fow injection analysis (rFIA) protocol for the determination of heavy metal ions in water by CD fuorescence quenching. As a proof of concept, nitrogen-doped CDs were synthesized from acrylic acid and ethylenediamine (ED) with quantum yields (QYs) of up to 44%, which are selective to cobalt. With the described system, we synthesized homogeneous CDs without the need for further purifcation and with the minimum consumption of reagents, and optimized fuorescence measurements can be performed with freshly obtained luminescent nanomaterials that have not undergone decomposition processes. They have an averagehydrodynamic diameter of 4.2±0.9 nm and maximum excitation and emission wavelengths at 358 nm and 452 nm, respectively. The system allows the automatic dilution and bufering of the synthesized CDs and the sample prior to the determination of cobalt. The concentration of cobalt was determined with good sensitivity and a limit of detection of 7 μg·L-1 with a linear range of 0.02-1 mg·L-1 of Co2+. Spiked tap water and river water samples were analyzed, obtaining recovery from 98 to 104%. This demonstrates the potential of the equipment as an efcient on-site control system for heavy metal monitoring in water.
publishDate 2023
dc.date.none.fl_str_mv 2
2023-01-01
2023
2023-01-01
dc.type.none.fl_str_mv Article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://ddd.uab.cat/record/283588
https://dx.doi.org/urn:doi:10.1007/s00604-023-05975-w
url https://ddd.uab.cat/record/283588
https://dx.doi.org/urn:doi:10.1007/s00604-023-05975-w
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv Agencia Estatal de Investigación https://doi.org/10.13039/501100011033 PRE2018-084834
Agencia Estatal de Investigación https://doi.org/10.13039/501100011033 CTQ2017-85011-R
Agencia Estatal de Investigación https://doi.org/10.13039/501100011033 PID2020-117216RB-I00
Agència de Gestió d'Ajuts Universitaris i de Recerca https://doi.org/10.13039/501100003030 2021/SGR-00124
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
https://creativecommons.org/licenses/by/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
https://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Dipòsit Digital de Documents de la UAB
instname:Universitat Autònoma de Barcelona
instname_str Universitat Autònoma de Barcelona
reponame_str Dipòsit Digital de Documents de la UAB
collection Dipòsit Digital de Documents de la UAB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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