Sorption of Polycyclic Aromatic Sulfur Heterocycles (PASH) on Nylon Microplastics at Environmentally Relevant Concentrations

Microplastics have garnered an infamous reputation as a sorbate for many concerning environmental pollutants and as a delivery vehicle for the aquatic food chain through the ingestion of these contaminated small particulates. While sorption mechanisms have been extensively studied for polycyclic aro...

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Main Authors: Stephanie D. Nauth, Andres D. Campiglia
Format: Article
Language:English
Published: MDPI AG 2024-04-01
Series:Molecules
Subjects:
Online Access:https://www.mdpi.com/1420-3049/29/7/1653
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author Stephanie D. Nauth
Andres D. Campiglia
author_facet Stephanie D. Nauth
Andres D. Campiglia
author_sort Stephanie D. Nauth
collection DOAJ
description Microplastics have garnered an infamous reputation as a sorbate for many concerning environmental pollutants and as a delivery vehicle for the aquatic food chain through the ingestion of these contaminated small particulates. While sorption mechanisms have been extensively studied for polycyclic aromatic hydrocarbons, polycyclic aromatic sulfur heterocycles (PASHs) have not been investigated, partly due to their low concentrations in aquatic ecosystems. Herein, an analytical methodology is presented for the analysis of dibenzothiophene, benzo[b]naphtho[1,2-b]thiophene, benzo[b]naphtho[2,1-b]thiophene, benzo[b]naphtho[2,3-b]thiophene, chryseno[4,5-bcd]thiophene and dinaphtho[1,2-b:1′,2′-d]thiophene at relevant environmental concentrations based on solid phase extraction and high-performance liquid chromatography. The sorption uptake behavior and the sorption kinetics of the three benzo[b]napthothiophene isomers were then investigated on nylon microplastics to provide original information on their environmental fate and avoid human contamination through the food chain. The obtained information might also prove relevant to the development of successful remediation approaches for aquatic ecosystems.
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spelling doaj.art-ea53d8f4bb3e4fd99f89c80028add01b2024-04-12T13:23:40ZengMDPI AGMolecules1420-30492024-04-01297165310.3390/molecules29071653Sorption of Polycyclic Aromatic Sulfur Heterocycles (PASH) on Nylon Microplastics at Environmentally Relevant ConcentrationsStephanie D. Nauth0Andres D. Campiglia1Department of Chemistry, University of Central Florida, Physical Sciences Building. 4111, Orlando, FL 32816, USADepartment of Chemistry, University of Central Florida, Physical Sciences Building. 4111, Orlando, FL 32816, USAMicroplastics have garnered an infamous reputation as a sorbate for many concerning environmental pollutants and as a delivery vehicle for the aquatic food chain through the ingestion of these contaminated small particulates. While sorption mechanisms have been extensively studied for polycyclic aromatic hydrocarbons, polycyclic aromatic sulfur heterocycles (PASHs) have not been investigated, partly due to their low concentrations in aquatic ecosystems. Herein, an analytical methodology is presented for the analysis of dibenzothiophene, benzo[b]naphtho[1,2-b]thiophene, benzo[b]naphtho[2,1-b]thiophene, benzo[b]naphtho[2,3-b]thiophene, chryseno[4,5-bcd]thiophene and dinaphtho[1,2-b:1′,2′-d]thiophene at relevant environmental concentrations based on solid phase extraction and high-performance liquid chromatography. The sorption uptake behavior and the sorption kinetics of the three benzo[b]napthothiophene isomers were then investigated on nylon microplastics to provide original information on their environmental fate and avoid human contamination through the food chain. The obtained information might also prove relevant to the development of successful remediation approaches for aquatic ecosystems.https://www.mdpi.com/1420-3049/29/7/1653polycyclic aromatic sulfur heterocyclessorptionsorption uptakekineticsnylon microplastics
spellingShingle Stephanie D. Nauth
Andres D. Campiglia
Sorption of Polycyclic Aromatic Sulfur Heterocycles (PASH) on Nylon Microplastics at Environmentally Relevant Concentrations
Molecules
polycyclic aromatic sulfur heterocycles
sorption
sorption uptake
kinetics
nylon microplastics
title Sorption of Polycyclic Aromatic Sulfur Heterocycles (PASH) on Nylon Microplastics at Environmentally Relevant Concentrations
title_full Sorption of Polycyclic Aromatic Sulfur Heterocycles (PASH) on Nylon Microplastics at Environmentally Relevant Concentrations
title_fullStr Sorption of Polycyclic Aromatic Sulfur Heterocycles (PASH) on Nylon Microplastics at Environmentally Relevant Concentrations
title_full_unstemmed Sorption of Polycyclic Aromatic Sulfur Heterocycles (PASH) on Nylon Microplastics at Environmentally Relevant Concentrations
title_short Sorption of Polycyclic Aromatic Sulfur Heterocycles (PASH) on Nylon Microplastics at Environmentally Relevant Concentrations
title_sort sorption of polycyclic aromatic sulfur heterocycles pash on nylon microplastics at environmentally relevant concentrations
topic polycyclic aromatic sulfur heterocycles
sorption
sorption uptake
kinetics
nylon microplastics
url https://www.mdpi.com/1420-3049/29/7/1653
work_keys_str_mv AT stephaniednauth sorptionofpolycyclicaromaticsulfurheterocyclespashonnylonmicroplasticsatenvironmentallyrelevantconcentrations
AT andresdcampiglia sorptionofpolycyclicaromaticsulfurheterocyclespashonnylonmicroplasticsatenvironmentallyrelevantconcentrations