Coupling single particle ICP-MS with field-flow fractionation for characterizing metal nanoparticles contained in nanoplastic colloids

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dc.contributor.authorBarber, Angela
dc.contributor.authorKly, Sun
dc.contributor.authorMoffitt, Matthew G.
dc.contributor.authorRand, Logan
dc.contributor.authorRanville, James F.
dc.date.accessioned2021-06-27T14:20:12Z
dc.date.available2021-06-27T14:20:12Z
dc.date.copyright2020en_US
dc.date.issued2020
dc.description.abstractUse of nano-enabled products increases the potential for release of engineered nanoparticles (ENP) into the environment. Product weathering and further environmental transformations can create composite particles (CPs) that may contain multiple ENPs, a residual product matrix (e.g. polymer), or transformed/added surface coatings. Methodology that uses transmission electron microscopy (TEM), single particle ICP-MS (spICP-MS) and field-flow fractionation (FFF) was developed to facilitate the investigation of metallic ENPs associated with CPs. In this study, colloidal-sized nanoplastic CPs consisting of a gold–polymer nanocomposite (polystyrene-block-poly(acrylic acid)) were examined to reveal how combining FFF with spICP-MS can be used to characterize CPs. Metal NP size and particle number concentration is obtained by spICP-MS. Asymmetric flow field-flow fractionation (AF4) and centrifugal field-flow fractionation (CFFF) separate and size the CPs based on their hydrodynamic diameter and buoyant mass, respectively. Off-line spICP-MS analysis of fractions obtained by the FFF separations facilitated measurement of the mass and number of Au–PS (gold–polystyrene) ENPs (from 1 to >8) contained in the CPs. In particular, CFFF utilizing a carrier that was density-matched to the polymer proved very successful in measuring multiple gold ENPS in the CPs. The developed methodology can be applied to investigate ENP properties in environmental systems.en_US
dc.description.reviewstatusRevieweden_US
dc.description.scholarlevelFacultyen_US
dc.description.sponsorshipThis study was partially funded by the National Science Foundation (CBET 1336168 and CBET 1512695) and the US Environmental Protection Agency through the STAR program (RD83558001). SK and MGM thank the Natural Sciences and Engineering Research Council (NSERC, Canada) for funding.en_US
dc.identifier.citationBarber, A., Kly, S., Moffitt, M. G., Rand, L., & Ranville, J. F. (2020). Coupling single particle ICPMS with field-flow fractionation for characterizing metal nanoparticles contained in nanoplastic colloids. Environmental Science: Nano, 2(7), 514-524. https://doi.org/10.1039/C9EN00637K.en_US
dc.identifier.urihttps://doi.org/10.1039/C9EN00637K
dc.identifier.urihttp://hdl.handle.net/1828/13064
dc.language.isoenen_US
dc.publisherEnvironmental Science: Nanoen_US
dc.subjectCentrifugal FFFen_US
dc.subjectAF4en_US
dc.subjectpolymer nanocompositeen_US
dc.subjectnanotechnologyen_US
dc.subjectheteroaggregatesen_US
dc.titleCoupling single particle ICP-MS with field-flow fractionation for characterizing metal nanoparticles contained in nanoplastic colloidsen_US
dc.typePostprinten_US

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