![\"Creative](\"https://www.marinespecies.org/aphia/images/cc/by.png\")
Understanding the degradation of marine plastics is critical for assessing their environmental impact. This process requires standardization to enable interoperability and comparability of data. The goal of this study was to evaluate how spectral preprocessing, particularly baseline correction, influences the comparability of carbonyl index (CI) values across laboratories analyzing marine micro- and mesoplastics. Among the tested methods, the fillpeaks baseline correction provided the highest consistency and inter-laboratory correlation (0.82), supporting its use as a standard for environmental CI determination. Our results demonstrate that CI values derived from differently processed spectra are not directly comparable, highlighting the need for harmonized analytical protocols.
","EngDescr":null,"OrigAbstract":null,"OrigDescr":null,"Comments":null,"ReleaseDate":null,"ReleaseDate0":null,"OrigDescrLang":null,"EmbargoDate":"2026-02-26","OrigDescrLangNL":null,"OrigLangCode":null,"OrigLangCodeExtended":null,"OrigLangID":null,"DescrCompFlag":null,"DescrTransFlag":null,"Citation":"Adamopoulou, A.; Catarino, A.I.; Pitta, E.; Miranda, M.N.; Cowger, W.; Suaria, G.; Paluselli, A.; Bountas, G.; Zeri, C.; Hellenic Centre for Marine Research (HCMR); Flanders Marine Institute (VLIZ); Moore Institute for Plastic Pollution Research; Institute of Marine Sciences (CNR-ISMAR); (2026): Harmonized spectral analysis for environmentally weathered plastic. Marine Data Archive.","AccessConstraints":null,"UDate":"2026-04-02","CDate":"2025-07-04","CurrencyDate":null,"RevisionDate":null,"DateLastModified":{"date":"2026-04-02 11:54:05.805021","timezone_type":1,"timezone":"+02:00"},"CheckedFlag":1,"PublicFlag":1,"VlizCoreFlag":1,"MarineFlag":null,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"StatusID":1,"DasType":"Data","DasTypeID":1,"DasOrigin":"Research: field experiment","Progress":"Completed","AccessConstraint":"Attribution (CC BY)","AccConstrEN":"Attribution (CC BY)","AccConstrDisplay":" This dataset is licensed under a Creative Commons Attribution 4.0 International License.","License":"https://creativecommons.org/licenses/by/4.0/","AccConstrDescription":"This license lets others distribute, remix, tweak, and build upon your work, even commercially, as long as they credit you for the original creation. This is the most accommodating of licenses offered. Recommended for maximum dissemination and use of licensed materials.","Lineage":null,"AccConID":21},"dois":[{"DOIID":1299,"PublicationYear":2026,"DOI":"10.14284/777","Citation":"Adamopoulou, A.; Catarino, A.I.; Pitta, E.; Miranda, M.N.; Cowger, W.; Suaria, G.; Paluselli, A.; Bountas, G.; Zeri, C.; Hellenic Centre for Marine Research (HCMR); Flanders Marine Institute (VLIZ); Moore Institute for Plastic Pollution Research; Institute of Marine Sciences (CNR-ISMAR); (2026): Harmonized spectral analysis for environmentally weathered plastic. Marine Data Archive.","MDAID":"VLIZ_00000311_698ed06de0541174015264","Moratorium":1,"MDAURL":"https://mda.vliz.be/directlink.php?fid=VLIZ_00000311_698ed06de0541174015264","CurrentDOI":1,"Active":1,"URL":null,"downloadURL":"https://mda.vliz.be/download.php?file=VLIZ_00000311_698ed06de0541174015264"}],"spcols":null,"keywords":[{"ThesaurusTerm":"Harmonization","ThesTypID":0,"ThesType":null,"Code":null,"Description":null,"OrigThesTerm":"Harmonization","DutchTerm":null,"URI":null,"DasKeywordDescr":null},{"ThesaurusTerm":"Intercomparison","ThesTypID":1,"ThesType":"ASFA Thesaurus List","Code":null,"Description":null,"OrigThesTerm":"Intercomparison","DutchTerm":null,"URI":null,"DasKeywordDescr":null},{"ThesaurusTerm":"Marine pollution","ThesTypID":1,"ThesType":"ASFA Thesaurus List","Code":null,"Description":null,"OrigThesTerm":"Marine pollution","DutchTerm":"Mariene vervuiling","URI":null,"DasKeywordDescr":null},{"ThesaurusTerm":"Mesoplastics","ThesTypID":0,"ThesType":null,"Code":null,"Description":null,"OrigThesTerm":"Mesoplastics","DutchTerm":"Mesoplastic","URI":null,"DasKeywordDescr":null},{"ThesaurusTerm":"Microplastics","ThesTypID":0,"ThesType":null,"Code":null,"Description":null,"OrigThesTerm":"Microplastics","DutchTerm":"Microplastics","URI":null,"DasKeywordDescr":null},{"ThesaurusTerm":"Plastic degradation","ThesTypID":0,"ThesType":null,"Code":null,"Description":null,"OrigThesTerm":"Plastic degradation","DutchTerm":"","URI":null,"DasKeywordDescr":null},{"ThesaurusTerm":"Spectra processing","ThesTypID":0,"ThesType":null,"Code":null,"Description":null,"OrigThesTerm":"Spectra processing","DutchTerm":"","URI":null,"DasKeywordDescr":null},{"ThesaurusTerm":"Weathered libraries","ThesTypID":0,"ThesType":null,"Code":null,"Description":null,"OrigThesTerm":"Weathered libraries","DutchTerm":"","URI":null,"DasKeywordDescr":null}],"parents":null,"children":null,"othrel":null,"othrelrev":null,"ownerships":[{"OrderNr":1,"Surname":"Adamopoulou","Firstname":"Argyro","Initials":"A.","PerPublicFlag":1,"AdrID":170786,"Email":"adamopoulou@hcmr.gr","InsPublicFlag":1,"Acronym":null,"OrigNameLangCode":"el","OrigNameLangID":25,"FullOrigName":"Ελληνικό Κέντρο Θαλάσσιων Ερευνών; Ινστιτούτο Ωκεανογραφίας","InsOwnerCNT":6,"PersID":29631,"InsID":3203,"FullInstitute":"Hellenic Centre for Marine Research; Institute of Oceanography","RoleID":61,"Role":"Data creator","OrigName":"Ινστιτούτο Ωκεανογραφίας","StandardName":"Institute of Oceanography","FullAcronym":"HCMR","ORC":"https://orcid.org/0009-0002-4372-7309","ROR":null},{"OrderNr":2,"Surname":"Catarino","Firstname":"Ana","Initials":"A.I.","PerPublicFlag":1,"AdrID":167726,"Email":"ana.catarino@vliz.be","InsPublicFlag":1,"Acronym":"VLIZ","OrigNameLangCode":"en","OrigNameLangID":15,"FullOrigName":"Flanders Marine Institute","InsOwnerCNT":3,"PersID":38251,"InsID":36,"FullInstitute":"Vlaams Instituut voor de Zee","RoleID":61,"Role":"Data creator","OrigName":"Flanders Marine Institute","StandardName":"Vlaams Instituut voor de Zee","FullAcronym":"VLIZ","ORC":"https://orcid.org/0000-0002-8796-0869","ROR":"https://ror.org/0496vr396"},{"OrderNr":3,"Surname":"Adamopoulou","Firstname":"Argyro","Initials":"A.","PerPublicFlag":1,"AdrID":170786,"Email":"adamopoulou@hcmr.gr","InsPublicFlag":1,"Acronym":null,"OrigNameLangCode":"el","OrigNameLangID":25,"FullOrigName":"Ελληνικό Κέντρο Θαλάσσιων Ερευνών; Ινστιτούτο Ωκεανογραφίας","InsOwnerCNT":6,"PersID":29631,"InsID":3203,"FullInstitute":"Hellenic Centre for Marine Research; Institute of Oceanography","RoleID":24,"Role":"Contact","OrigName":"Ινστιτούτο Ωκεανογραφίας","StandardName":"Institute of Oceanography","FullAcronym":"HCMR","ORC":"https://orcid.org/0009-0002-4372-7309","ROR":null},{"OrderNr":4,"Surname":"Pitta","Firstname":"Elli","Initials":"E.","PerPublicFlag":1,"AdrID":170784,"Email":"ellip@hcmr.gr","InsPublicFlag":1,"Acronym":null,"OrigNameLangCode":"el","OrigNameLangID":25,"FullOrigName":"Ελληνικό Κέντρο Θαλάσσιων Ερευνών; Ινστιτούτο Ωκεανογραφίας","InsOwnerCNT":6,"PersID":45955,"InsID":3203,"FullInstitute":"Hellenic Centre for Marine Research; Institute of Oceanography","RoleID":61,"Role":"Data creator","OrigName":"Ινστιτούτο Ωκεανογραφίας","StandardName":"Institute of Oceanography","FullAcronym":"HCMR","ORC":"https://orcid.org/0009-0003-4956-7286","ROR":null},{"OrderNr":5,"Surname":"Miranda","Firstname":"Mariana","Initials":"M.","PerPublicFlag":1,"AdrID":171159,"Email":"mariana.miranda@vliz.be","InsPublicFlag":1,"Acronym":"VLIZ","OrigNameLangCode":"en","OrigNameLangID":15,"FullOrigName":"Flanders Marine Institute","InsOwnerCNT":3,"PersID":44170,"InsID":36,"FullInstitute":"Vlaams Instituut voor de Zee","RoleID":61,"Role":"Data creator","OrigName":"Flanders Marine Institute","StandardName":"Vlaams Instituut voor de Zee","FullAcronym":"VLIZ","ORC":"https://orcid.org/0000-0002-3766-7680","ROR":"https://ror.org/0496vr396"},{"OrderNr":6,"Surname":"Cowger","Firstname":"Win","Initials":"W.","PerPublicFlag":1,"AdrID":170799,"Email":"win@mooreplasticresearch.org","InsPublicFlag":1,"Acronym":null,"OrigNameLangCode":null,"OrigNameLangID":null,"FullOrigName":null,"InsOwnerCNT":2,"PersID":45958,"InsID":15483,"FullInstitute":"Moore Institute for Plastic Pollution Research","RoleID":61,"Role":"Data creator","OrigName":null,"StandardName":"Moore Institute for Plastic Pollution Research","FullAcronym":null,"ORC":"https://orcid.org/0000-0001-9226-3104","ROR":null},{"OrderNr":7,"Surname":"Suaria","Firstname":"Giuseppe","Initials":"G.","PerPublicFlag":1,"AdrID":170795,"Email":"giuseppe.suaria@sp.ismar.cnr.it","InsPublicFlag":1,"Acronym":"ISMAR","OrigNameLangCode":"it","OrigNameLangID":32,"FullOrigName":"Consiglio Nazionale delle Ricerche; Istituto di Scienze Marine","InsOwnerCNT":3,"PersID":45960,"InsID":5417,"FullInstitute":"Italian National Research Council; Institute of Marine Sciences","RoleID":61,"Role":"Data creator","OrigName":"Istituto di Scienze Marine","StandardName":"Institute of Marine Sciences","FullAcronym":"CNR-ISMAR","ORC":"https://orcid.org/0000-0002-4290-349X","ROR":null},{"OrderNr":8,"Surname":"Paluselli","Firstname":"Andrea","Initials":"A.","PerPublicFlag":1,"AdrID":170796,"Email":"andrea.paluselli@sp.ismar.cnr.it","InsPublicFlag":1,"Acronym":"ISMAR","OrigNameLangCode":"it","OrigNameLangID":32,"FullOrigName":"Consiglio Nazionale delle Ricerche; Istituto di Scienze Marine","InsOwnerCNT":3,"PersID":45959,"InsID":5417,"FullInstitute":"Italian National Research Council; Institute of Marine Sciences","RoleID":61,"Role":"Data creator","OrigName":"Istituto di Scienze Marine","StandardName":"Institute of Marine Sciences","FullAcronym":"CNR-ISMAR","ORC":null,"ROR":null},{"OrderNr":9,"Surname":"Bountas","Firstname":"George","Initials":"G.","PerPublicFlag":1,"AdrID":170797,"Email":null,"InsPublicFlag":1,"Acronym":null,"OrigNameLangCode":"el","OrigNameLangID":25,"FullOrigName":"Ελληνικό Κέντρο Θαλάσσιων Ερευνών; Ινστιτούτο Ωκεανογραφίας","InsOwnerCNT":6,"PersID":45961,"InsID":3203,"FullInstitute":"Hellenic Centre for Marine Research; Institute of Oceanography","RoleID":61,"Role":"Data creator","OrigName":"Ινστιτούτο Ωκεανογραφίας","StandardName":"Institute of Oceanography","FullAcronym":"HCMR","ORC":"https://orcid.org/0009-0005-0410-0353","ROR":null},{"OrderNr":10,"Surname":"Zeri","Firstname":"Christina","Initials":"C.","PerPublicFlag":1,"AdrID":170789,"Email":"chris@hcmr.gr","InsPublicFlag":1,"Acronym":null,"OrigNameLangCode":"el","OrigNameLangID":25,"FullOrigName":"Ελληνικό Κέντρο Θαλάσσιων Ερευνών; Ινστιτούτο Ωκεανογραφίας","InsOwnerCNT":6,"PersID":45957,"InsID":3203,"FullInstitute":"Hellenic Centre for Marine Research; Institute of Oceanography","RoleID":61,"Role":"Data creator","OrigName":"Ινστιτούτο Ωκεανογραφίας","StandardName":"Institute of Oceanography","FullAcronym":"HCMR","ORC":"https://orcid.org/0000-0003-2063-4708","ROR":null},{"OrderNr":11,"Surname":null,"Firstname":null,"Initials":null,"PerPublicFlag":null,"AdrID":null,"Email":null,"InsPublicFlag":1,"Acronym":null,"OrigNameLangCode":"el","OrigNameLangID":25,"FullOrigName":"Ελληνικό Κέντρο Θαλάσσιων Ερευνών; Ινστιτούτο Ωκεανογραφίας","InsOwnerCNT":6,"PersID":null,"InsID":3203,"FullInstitute":"Hellenic Centre for Marine Research; Institute of Oceanography","RoleID":61,"Role":"Data creator","OrigName":"Ινστιτούτο Ωκεανογραφίας","StandardName":"Institute of Oceanography","FullAcronym":"HCMR","ORC":null,"ROR":null},{"OrderNr":12,"Surname":null,"Firstname":null,"Initials":null,"PerPublicFlag":null,"AdrID":null,"Email":null,"InsPublicFlag":1,"Acronym":"VLIZ","OrigNameLangCode":"en","OrigNameLangID":15,"FullOrigName":"Flanders Marine Institute","InsOwnerCNT":3,"PersID":null,"InsID":36,"FullInstitute":"Vlaams Instituut voor de Zee","RoleID":61,"Role":"Data creator","OrigName":"Flanders Marine Institute","StandardName":"Vlaams Instituut voor de Zee","FullAcronym":"VLIZ","ORC":null,"ROR":"https://ror.org/0496vr396"},{"OrderNr":13,"Surname":null,"Firstname":null,"Initials":null,"PerPublicFlag":null,"AdrID":null,"Email":null,"InsPublicFlag":1,"Acronym":null,"OrigNameLangCode":null,"OrigNameLangID":null,"FullOrigName":null,"InsOwnerCNT":2,"PersID":null,"InsID":15483,"FullInstitute":"Moore Institute for Plastic Pollution Research","RoleID":61,"Role":"Data creator","OrigName":null,"StandardName":"Moore Institute for Plastic Pollution Research","FullAcronym":null,"ORC":null,"ROR":null},{"OrderNr":14,"Surname":null,"Firstname":null,"Initials":null,"PerPublicFlag":null,"AdrID":null,"Email":null,"InsPublicFlag":1,"Acronym":"ISMAR","OrigNameLangCode":"it","OrigNameLangID":32,"FullOrigName":"Consiglio Nazionale delle Ricerche; Istituto di Scienze Marine","InsOwnerCNT":3,"PersID":null,"InsID":5417,"FullInstitute":"Italian National Research Council; Institute of Marine Sciences","RoleID":61,"Role":"Data creator","OrigName":"Istituto di Scienze Marine","StandardName":"Institute of Marine Sciences","FullAcronym":"CNR-ISMAR","ORC":null,"ROR":null}],"taxterms":null,"frameworks":null,"otherterms":[{"OtherTerm":"Harmonization"},{"OtherTerm":"Mesoplastics"},{"OtherTerm":"Microplastics"},{"OtherTerm":"Plastic degradation"},{"OtherTerm":"Spectra processing"},{"OtherTerm":"Weathered libraries"}],"temporal":[{"DasDateID":6441,"StartYear":2023,"EndYear":2024,"StartDay":1,"EndDay":29,"StartDate":"2023-01-01","EndDate":"2024-12-29","DasDate":null,"Resolution":null,"ResolutionNL":null,"Notes":null,"StartMonth0":1,"StartMonth":"January","StartMonthNL":"Januari","EndMonth0":12,"EndMonth":"December","EndMonthNL":"December","Progress":"Completed","ProgressNL":"Afgelopen"}],"geographical":null,"meastypes":[{"MethID":750,"DasMeasTypID":20545,"DasMeasType":"","Matrix":null,"MatrixNL":null,"Parameter":"Absorbance of weathered micro and mesoplastics","ParameterNL":"","Description":null,"Unit":null,"Methodology":"Measured by three different Fourier transform infrared (FTIR) spectrometers","Protocol":null,"QualityControl":null,"Precision":null,"Detectionlimit":null,"Instrument":null,"InstrumentUrl":null,"MethFull":"","ParaCategoryTitle":null,"ParaCatCode":null},{"MethID":749,"DasMeasTypID":20546,"DasMeasType":"","Matrix":null,"MatrixNL":null,"Parameter":"Carbonyl Index of weathered micro and mesoplastics","ParameterNL":"","Description":null,"Unit":null,"Methodology":"Calculated from the FTIR spectrum of the micro and mesoplastics","Protocol":null,"QualityControl":null,"Precision":null,"Detectionlimit":null,"Instrument":null,"InstrumentUrl":null,"MethFull":"","ParaCategoryTitle":null,"ParaCatCode":null},{"MethID":747,"DasMeasTypID":20548,"DasMeasType":"","Matrix":null,"MatrixNL":null,"Parameter":"Maximum and Minimum diameter of micro and mesoplastic","ParameterNL":"","Description":null,"Unit":null,"Methodology":"Image analysis","Protocol":null,"QualityControl":null,"Precision":null,"Detectionlimit":null,"Instrument":null,"InstrumentUrl":null,"MethFull":"","ParaCategoryTitle":null,"ParaCatCode":null},{"MethID":748,"DasMeasTypID":20547,"DasMeasType":"","Matrix":null,"MatrixNL":null,"Parameter":"Spectrum Baseline correction","ParameterNL":"","Description":null,"Unit":null,"Methodology":"Fillpeaks and Modpolyfit packages in R","Protocol":null,"QualityControl":null,"Precision":null,"Detectionlimit":null,"Instrument":null,"InstrumentUrl":null,"MethFull":"","ParaCategoryTitle":null,"ParaCatCode":null}],"dasthemes":[{"DasThemeID":32,"DasTheme":"Environmental quality/pollution","DasTheme0":"Environmental quality/pollution","DutchTerm":"Milieu-kwaliteit / vervuiling"}],"projects":null,"refs":null,"urls":null,"pictures":null,"urlmaps":null,"spatreps":null,"fileformats":null,"resmessage":"","complete":1}