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dc.contributor.authorSekine, Ryo
dc.contributor.authorMarzouk, Ezzat R
dc.contributor.authorKhaksar, Maryam
dc.contributor.authorScheckel, Kirk G
dc.contributor.authorStegemeier, John P
dc.contributor.authorLowry, Gregory V
dc.contributor.authorDonner, Erica
dc.contributor.authorLombi, Enzo
dc.date.accessioned2019-02-01T00:17:05Z
dc.date.available2019-02-01T00:17:05Z
dc.date.issued2017
dc.identifier.issn0047-2425
dc.identifier.doi10.2134/jeq2016.12.0485
dc.identifier.urihttp://hdl.handle.net/10072/382230
dc.description.abstractWith the growing availability and use of copper-based nanomaterials (Cu-NMs), there is increasing concern regarding their release and potential impact on the environment. In this study, the short-term (≤5 d) aging profile and the long-term (135 d) speciation of dissolved Cu, copper oxide, and copper sulfide nanoparticles (CuO-NPs and CuS-NPs) were investigated in five different soils using X-ray absorption spectroscopy. Soil pH was found to strongly influence the short-term chemistry of the Cu-NMs added at 100 mg kg−1 above background. Low pH soils promoted rapid dissolution of CuO-NPs that effectively aligned their behavior to that of dissolved Cu within 3 d. In higher pH soils, CuO-NPs persisted longer due to slower dissolution in the soil and resulted in contrasting short-term speciation compared with dissolved Cu, which formed copper hydroxides and carbonates that were reflective of the soil chemistry. Organic matter appeared to slow the dissolution process, but in the long term, the speciation of Cu added as dissolved Cu, CuO-NPs, and CuS-NPs were found to be same for each soil. The results imply that, in the short term, Cu-NMs may exhibit unique behavior in alkaline soils compared with their conventional forms (e.g., in the event of an adverse leaching event), but in the long term (≥135 d), their fates are dictated by the soil properties, are independent of the initial Cu form, and are likely to present minimal risk of nanospecific Cu-NM impact in the soil environment for the concentration studied here.
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherAmerican Society of Agronomy
dc.relation.ispartofpagefrom1198
dc.relation.ispartofpageto1205
dc.relation.ispartofissue6
dc.relation.ispartofjournalJournal of Environmental Quality
dc.relation.ispartofvolume46
dc.subject.fieldofresearchEarth sciences
dc.subject.fieldofresearchEnvironmental sciences
dc.subject.fieldofresearchOther environmental sciences not elsewhere classified
dc.subject.fieldofresearchBiological sciences
dc.subject.fieldofresearchcode37
dc.subject.fieldofresearchcode41
dc.subject.fieldofresearchcode419999
dc.subject.fieldofresearchcode31
dc.titleAging of Dissolved Copper and Copper-based Nanoparticles in Five Different Soils: Short-term Kinetics vs. Long-term Fate
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
dc.description.versionAccepted Manuscript (AM)
gro.rights.copyright© The Author(s) 2017. This is the author-manuscript version of this paper. It is posted here with permission of the copyright owner(s) for your personal use only. No further distribution permitted. For information about this journal please refer to the journal’s website or contact the author(s).
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gro.griffith.authorSekine, Ryo


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