Polymer Identification and Specific Analysis (PISA) of Microplastic Total Mass in Sediments of the Protected Marine Area of the Meloria Shoals
Polymers2021
25 citations
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Score: 40
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Andrea Corti,
Jacopo La Nasa
Jacopo La Nasa
Jacopo La Nasa
Andrea Corti,
Valter Castelvetro,
Valter Castelvetro,
Alessio Ceccarini,
Valter Castelvetro,
Valter Castelvetro,
Andrea Corti,
Valter Castelvetro,
Jacopo La Nasa
Valter Castelvetro,
Valter Castelvetro,
Jacopo La Nasa
Valter Castelvetro,
Jacopo La Nasa
Jacopo La Nasa
Jacopo La Nasa
Andrea Corti,
Jacopo La Nasa
Francesca Modugno,
Virginia Vinciguerra,
Virginia Vinciguerra,
Andrea Corti,
Andrea Corti,
Jacopo La Nasa
Andrea Corti,
Andrea Corti,
Jacopo La Nasa
Jacopo La Nasa
Andrea Corti,
Andrea Corti,
Andrea Corti,
Jacopo La Nasa
Jacopo La Nasa
Jacopo La Nasa
Jacopo La Nasa
Jacopo La Nasa
Andrea Corti,
Andrea Corti,
Alessio Ceccarini,
Jacopo La Nasa
Jacopo La Nasa
Jacopo La Nasa
Andrea Corti,
Andrea Corti,
Jacopo La Nasa
Andrea Corti,
Francesca Modugno,
Alessio Ceccarini,
Francesca Modugno,
Francesca Modugno,
Jacopo La Nasa
Francesca Modugno,
Stefania Giannarelli,
Alessio Ceccarini,
Francesca Modugno,
Alessio Ceccarini,
Alessio Ceccarini,
Valter Castelvetro,
Alessio Ceccarini,
Andrea Corti,
Andrea Corti,
Alessio Ceccarini,
Andrea Corti,
Jacopo La Nasa
Francesca Modugno,
Valter Castelvetro,
Valter Castelvetro,
Stefania Giannarelli,
Valter Castelvetro,
Stefania Giannarelli,
Alessio Ceccarini,
Alessio Ceccarini,
Alessio Ceccarini,
Jacopo La Nasa
Jacopo La Nasa
Andrea Corti,
Francesca Modugno,
Alessio Ceccarini,
Francesca Modugno,
Stefania Giannarelli,
Alessio Ceccarini,
Jacopo La Nasa
Jacopo La Nasa
Virginia Vinciguerra,
Virginia Vinciguerra,
Jacopo La Nasa
Virginia Vinciguerra,
Virginia Vinciguerra,
Virginia Vinciguerra,
Virginia Vinciguerra,
Alessio Ceccarini,
Stefania Giannarelli,
Francesca Modugno,
Alessio Ceccarini,
Alessio Ceccarini,
Valter Castelvetro,
Alessio Ceccarini,
Alessio Ceccarini,
Francesca Modugno,
Francesca Modugno,
Valter Castelvetro,
Jacopo La Nasa
Andrea Corti,
Andrea Corti,
Andrea Corti,
Virginia Vinciguerra,
Andrea Corti,
Jacopo La Nasa
Andrea Corti,
Francesca Modugno,
Francesca Modugno,
Francesca Modugno,
Francesca Modugno,
Francesca Modugno,
Stefania Giannarelli,
Stefania Giannarelli,
Stefania Giannarelli,
Valter Castelvetro,
Valter Castelvetro,
Valter Castelvetro,
Valter Castelvetro,
Valter Castelvetro,
Virginia Vinciguerra,
Virginia Vinciguerra,
Virginia Vinciguerra,
Francesca Modugno,
Jacopo La Nasa
Virginia Vinciguerra,
Virginia Vinciguerra,
Valter Castelvetro,
Valter Castelvetro,
Valter Castelvetro,
Valter Castelvetro,
Francesca Modugno,
Alessio Ceccarini,
Francesca Modugno,
Alessio Ceccarini,
Francesca Modugno,
Francesca Modugno,
Francesca Modugno,
Francesca Modugno,
Valter Castelvetro,
Jacopo La Nasa
Virginia Vinciguerra,
Jacopo La Nasa
Virginia Vinciguerra,
Virginia Vinciguerra,
Virginia Vinciguerra,
Andrea Corti,
Andrea Corti,
Valter Castelvetro,
Francesca Modugno,
Valter Castelvetro,
Francesca Modugno,
Francesca Modugno,
Valter Castelvetro,
Valter Castelvetro,
Francesca Modugno,
Monica Bertoldo,
Valter Castelvetro,
Francesca Modugno,
Francesca Modugno,
Francesca Modugno,
Virginia Vinciguerra,
Stefania Giannarelli,
Virginia Vinciguerra,
Francesca Modugno,
Valter Castelvetro,
Francesca Modugno,
Francesca Modugno,
Alessio Ceccarini,
Francesca Modugno,
Valter Castelvetro,
Valter Castelvetro,
Francesca Modugno,
Andrea Corti,
Francesca Modugno,
Valter Castelvetro,
Valter Castelvetro,
Francesca Modugno,
Virginia Vinciguerra,
Virginia Vinciguerra,
Francesca Modugno,
Jacopo La Nasa
Jacopo La Nasa
Summary
Researchers applied their Polymer Identification and Specific Analysis (PISA) method to quantify microplastic mass in benthic sediments from the protected marine area of the Meloria Shoals near Leghorn, Italy, demonstrating the method's applicability to complex low-concentration sediment matrices.
Microplastics (MPs) quantification in benthic marine sediments is typically performed by time-consuming and moderately accurate mechanical separation and microscopy detection. In this paper, we describe the results of our innovative Polymer Identification and Specific Analysis (PISA) of microplastic total mass, previously tested on either less complex sandy beach sediment or less demanding (because of the high MPs content) wastewater treatment plant sludges, applied to the analysis of benthic sediments from a sublittoral area north-west of Leghorn (Tuscany, Italy). Samples were collected from two shallow sites characterized by coarse debris in a mixed seabed of Posidonia oceanica, and by a very fine silty-organogenic sediment, respectively. After sieving at <2 mm the sediment was sequentially extracted with selective organic solvents and the two polymer classes polystyrene (PS) and polyolefins (PE and PP) were quantified by pyrolysis-gas chromatography-mass spectrometry (Pyr-GC/MS). A contamination in the 8–65 ppm range by PS could be accurately detected. Acid hydrolysis on the extracted residue to achieve total depolymerization of all natural and synthetic polyamides, tagging of all aminated species in the hydrolysate with a fluorophore, and reversed-phase high performance liquid chromatography (HPLC) (RP-HPLC) analysis, allowed the quantification within the 137–1523 ppm range of the individual mass of contaminating nylon 6 and nylon 6,6, based on the detected amounts of the respective monomeric amines 6-aminohexanoic acid (AHA) and hexamethylenediamine (HMDA). Finally, alkaline hydrolysis of the residue from acid hydrolysis followed by RP-HPLC analysis of the purified hydrolysate showed contamination by polyethylene terephthalate (PET) in the 12.1–2.7 ppm range, based on the content of its comonomer, terephthalic acid.