Please use this identifier to cite or link to this item:
https://hdl.handle.net/10316/106444
DC Field | Value | Language |
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dc.contributor.author | Rodrigues, M. O. | - |
dc.contributor.author | Gonçalves, Ana M. M. | - |
dc.contributor.author | Gonçalves, F. J. M. | - |
dc.contributor.author | Abrantes, N. | - |
dc.date.accessioned | 2023-04-03T10:18:20Z | - |
dc.date.available | 2023-04-03T10:18:20Z | - |
dc.date.issued | 2020 | - |
dc.identifier.issn | 2215-0161 | pt |
dc.identifier.uri | https://hdl.handle.net/10316/106444 | - |
dc.description.abstract | The methodology used to extract and quantify microplastics (MPs) in aquatic systems are still not standardized. Salt saturated solutions, such as sodium chloride (NaCl), zinc chloride (ZnCl2) and/or sodium iodide (NaI), are normally added to separate dense plastics from aquatic samples. However, the most effective reagents are also the most expensive (e.g. ZnCl2 and NaI). To decrease this cost, a reuse process of the salt solutions should be applied. The reuse process has been widely investigated for the NaI solution neglecting the ZnCl2. Hence, the aim of this study was to present a simple methodology to reuse the ZnCl2 solution ensuring the efficiency of the product. Results of the present study showed that ZnCl2 solution could be reused at least five times maintaining an efficiency above 95 %. •The ZnCl2 reuse decreases the cost of the methodology.•The efficiency of ZnCl2 solution after five filtrations remains above 95 % (all polymers are detected and recovered).•The use of this salt solution is the most cost-effective methodology to isolate MPs from aquatic samples. | pt |
dc.description.sponsorship | This study was supported by Fundação para a Ciência e a Tecnologia (FCT/MCTES) through national funds UID/AMB/50017/2019 granted to Centro de Estudos do Ambiente e do Mar (CESAM) and UID/ MAR/04292/2019 granted to Marine and Environmental Sciences Centre (MARE), and through the Regional Operational Programme CENTRO2020 within the scope of the project CENTRO-01- 0145FEDER-000006. A.M.M. Gonçalves acknowledges FCT for the financial support provided through the post-doctoral grant (SFRH/BPD/ 97210/2013) co-funded by the Human Potential Operational Programme (National Strategic Reference Framework 2007–2013), European Social Fund (EU), and the program POPH/FSE, and University of Coimbra for the contract (IT057-18-7253). N. Abrantes is recipient of an FCT researcher contract (IF/01198/2014) and M.O. Rodrigues is recipient of a research grant from FCT (SFRH/BD/136931/2018) funded by National Funds and Community Funds through FSE. | - |
dc.language.iso | eng | pt |
dc.publisher | Elsevier | pt |
dc.rights | openAccess | pt |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | pt |
dc.subject | Microplastics | pt |
dc.subject | Separation methodology | pt |
dc.subject | Zinc chloride | pt |
dc.subject | Aquatic systems | pt |
dc.subject | Reuse process | pt |
dc.title | Improving cost-efficiency for MPs density separation by zinc chloride reuse | pt |
dc.type | article | - |
degois.publication.firstPage | 100785 | pt |
degois.publication.title | MethodsX | pt |
dc.peerreviewed | yes | pt |
dc.identifier.doi | 10.1016/j.mex.2020.100785 | pt |
degois.publication.volume | 7 | pt |
dc.date.embargo | 2020-01-01 | * |
uc.date.periodoEmbargo | 0 | pt |
item.fulltext | Com Texto completo | - |
item.grantfulltext | open | - |
item.languageiso639-1 | en | - |
item.cerifentitytype | Publications | - |
item.openairetype | article | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
crisitem.author.researchunit | MARE - Marine and Environmental Sciences Centre | - |
crisitem.author.orcid | 0000-0002-8611-7183 | - |
Appears in Collections: | I&D MARE - Artigos em Revistas Internacionais |
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1-s2.0-S2215016120300054-main.pdf | 421.54 kB | Adobe PDF | View/Open |
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