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Thorough Multianalytical Characterization and Quantification of Micro- and Nanoplastics from Bracciano Lake's Sediments
- Source :
- Sustainability, Volume 12, Issue 3, Sustainability, Vol 12, Iss 3, p 878 (2020)
- Publication Year :
- 2020
-
Abstract
- Lake basins can behave as accumulators of microplastics released in wastewaters as such or resulting from degradation of larger items before and/or during their journey toward the marine environment as a final sink. A novel multianalytical approach was adopted for the detection and quantification of microplastics with size &lt<br />2 mm in the sediments of the volcanic lake of Bracciano, Italy. Simple analytical techniques such as solvent extraction/fractionation (for polyolefins and polystyrene) or depolymerization (for polyethylene terephthalate, PET), along with chromatographic detection (SEC and HPLC), allowed quantitative and qualitative determination of the main synthetic polymer contaminants. In particular, PET microplastic concentrations of 0.8&ndash<br />36 ppm were found, with variability related to the sampling site (exposure to incoming winds and wave action). Proton Nuclear Magnetic Resonance (1H-NMR) and Attenuated Total Reflectance Fourier Transformed InfraRed (ATR-FTIR spectroscopic investigations supported the identification and chemical characterization of plastic fragments and polymer extracts. The average molecular weight of solvent extractable polymers was evaluated from 2D 1H-NMR diffusion ordered spectroscopy (DOSY) experiments. The proposed, easily accessible multianalytical approach can be considered as a useful tool for improving our knowledge on the nature and the concentration of microplastics in sediments, giving insights on the impact of human activities on the health status of aquatic ecosystems.
- Subjects :
- NMR-DOSY
Microplastics
separation
microplastics
lcsh:TJ807-830
Geography, Planning and Development
lcsh:Renewable energy sources
02 engineering and technology
Fractionation
010501 environmental sciences
Management, Monitoring, Policy and Law
01 natural sciences
chemistry.chemical_compound
nanoplastics
freshwater sediment
liquid chromatography
PET
polyolefins
NMR‐DOSY
lcsh:Environmental sciences
0105 earth and related environmental sciences
lcsh:GE1-350
chemistry.chemical_classification
Renewable Energy, Sustainability and the Environment
Depolymerization
lcsh:Environmental effects of industries and plants
nanoplastic
Polymer
Contamination
021001 nanoscience & nanotechnology
lcsh:TD194-195
chemistry
Environmental chemistry
Attenuated total reflection
Molar mass distribution
Polystyrene
0210 nano-technology
microplastic
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- Sustainability, Volume 12, Issue 3, Sustainability, Vol 12, Iss 3, p 878 (2020)
- Accession number :
- edsair.doi.dedup.....9991f9f206ec9f2d93d5459485ad8115