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Fluorescence sensing of microplastics on surfaces

2021-01-03Journal article Restricted access
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dc.contributor.authorCosta, Camila Q. V.
dc.contributor.authorCruz, Joana
dc.contributor.authorMartins, Jorge
dc.contributor.authorTeodosio, Maria
dc.contributor.authorJockusch, Steffen
dc.contributor.authorRamamurthy, V.
dc.contributor.authorDa Silva, José Paulo
dc.date.accessioned2021-03-05T13:01:48Z
dc.date.available2021-03-05T13:01:48Z
dc.date.issued2021-01-03
dc.date.updated2021-03-05T12:10:26Z
dc.description.abstractMicroplastics, nanoplastics and related products have been recently found in marine ecosystems worldwide, calling for new analytical methods for rapid detection and risk assessment. Fluorescence is a sensitive technique that when used with polarity probes can potentially detect low-polarity plastic particles in environments. Here, we evaluated the fuorescence technique to sense polystyrene microparticles directly on salt, silica and sand surfaces, using Nile Red and pyrene as polarity probes. Results show that all probes displayed fuorescence on silica and sand, whereas strong fuorescence quenching was observed on NaCl. Polystyrene particles increase the fuorescence intensity due to probe migration into their nonpolar microenvironment. In the presence of polystyrene, the spectra of Nile Red are shifted to shorter wavelengths, while the ratio of vibronic bands I1/I3 of fuorescence of pyrene decreases to about 1. Pyrene showed similar sensitivity toward surface-modifed carboxyl polystyrene particles. On NaCl, the emission of pyrene increases linearly with polystyrene content for concentrations from 0.5 to 20 µg/g. The detection limit of polystyrene microparticles on natural sea salt using pyrene as probe is about 0.2 µg/g, while on sand, the sensitivity is about one order of magnitude lower. Overall, although being of relatively low selectivity, the fuorescence technique can be used to determine a maximum content of plastic particles of few micrometers size with little sample preparation. Fluorescence, when used in conjunction with pyrene probe, allows for detection and quantifcation of microplastic particles in the sub-ppm range.pt_PT
dc.description.sponsorshipUIDB/04326/2020, ALG-01-0145-FEDER-022121, ALG-01-0145-FEDER-022121pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1007/s10311-020-01136-0pt_PT
dc.identifier.issn1610-3653
dc.identifier.issn1610-3661
dc.identifier.slugcv-prod-2341467
dc.identifier.urihttp://hdl.handle.net/10400.1/15172
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherSpringerpt_PT
dc.subjectMicroplasticspt_PT
dc.subjectFluorescent polarity probespt_PT
dc.subjectPyrenept_PT
dc.subjectSurfacespt_PT
dc.subjectSaltpt_PT
dc.subjectSandpt_PT
dc.titleFluorescence sensing of microplastics on surfacespt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.titleEnvironmental Chemistry Letterspt_PT
person.familyNameCruz
person.familyNameMartins
person.familyNameTeodosio
person.familyNameDa Silva
person.givenNameJoana
person.givenNameJorge
person.givenNameMaria
person.givenNameJosé Paulo
person.identifier1810506
person.identifier.ciencia-idDA1E-EE64-65FA
person.identifier.ciencia-id8516-F285-FB5D
person.identifier.ciencia-idAF10-647B-65FB
person.identifier.ciencia-id3413-C4F4-73F7
person.identifier.orcid0000-0002-7191-9204
person.identifier.orcid0000-0001-5460-1969
person.identifier.orcid0000-0002-0939-9885
person.identifier.orcid0000-0002-6458-7328
person.identifier.ridI-9043-2017
person.identifier.ridM-6234-2013
person.identifier.ridB-5077-2013
person.identifier.ridA-4606-2008
person.identifier.scopus-author-id57194288680
person.identifier.scopus-author-id7201798828
person.identifier.scopus-author-id56196396700
person.identifier.scopus-author-id7201733236
rcaap.cv.cienciaidAF10-647B-65FB | MARIA ALEXANDRA ANICA TEODÓSIO
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
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relation.isAuthorOfPublication1671e2f3-b61c-426e-8d31-0ebb770673ad
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relation.isAuthorOfPublicatione2004fa2-a47d-44b0-b11c-fc95fe51cbf9
relation.isAuthorOfPublication.latestForDiscovery87539758-6db5-4ea7-9042-7e59f085d4c2

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