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High retention of silver sulfide nanoparticles in natural soils

2019-10Journal article Restricted access
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dc.contributor.authorLi, Min
dc.contributor.authorGreenfield, Ben K.
dc.contributor.authorNunes, Luís
dc.contributor.authorDang, Fei
dc.contributor.authorLiu, Hai-long
dc.contributor.authorZhou, Dong-mei
dc.contributor.authorYin, Bin
dc.date.accessioned2020-07-24T10:51:17Z
dc.date.available2021-10-01T00:30:22Z
dc.date.issued2019-10
dc.description.abstractSilver, either in ionic or nanoparticulate form, is widely used in consumer products. However, silver sulfide (Ag2S) are more likely to be the form that Ag enters the environment. The retention of silver sulfide nanoparticles (Ag2S-NPs) in natural soils is critical for bioavailability and toxicity but remains unclear. Here, we examined the retention of Ag2S-NPs in 11 natural soils with varying properties using batch assays. More than 99% of Ag2S-NPs were retained in soil solids, irrespective of soil properties. Such high retention of Ag2S-NPs, at least partially, explained the distinct differences in phytoavailability performed in soil vs. liquid media in the literature. Nanoparticles containing Ag and S were identified in representative soil solids by high resolution transmission electron microscopy equipped with an energy dispersive X-ray spectrometer. Iron-rich acidic soil had a high dissolution of Ag2S-NPs ranging from 47.1% to 61.7% in porewater. In contrast to Ag2S-NPs, silver nanoparticles (AgNPs) and Ag+ in these soils were less retained (as described by Freundlich model) and the retention was closely associated with soil properties. These findings highlight the unique behaviors of Ag2S-NPs in natural soils.
dc.description.sponsorshipNational Natural Science Foundation of ChinaNational Natural Science Foundation of China [41430752, 41671484]
dc.description.sponsorshipNatural Science Foundation of Jiangsu ProvinceJiangsu Planned Projects for Postdoctoral Research FundsNatural Science Foundation of Jiangsu Province [BK20170110]
dc.description.versioninfo:eu-repo/semantics/publishedVersion
dc.identifier.doi10.1016/j.jhazmat.2019.06.012
dc.identifier.issn0304-3894
dc.identifier.urihttp://hdl.handle.net/10400.1/14214
dc.language.isoeng
dc.peerreviewedyes
dc.publisherElsevier
dc.subjectRay-absorption spectroscopy
dc.subjectSewage sludge
dc.subjectWaste water
dc.subjectOrganic matter
dc.subjectFate
dc.subjectAg
dc.subjectTransformation
dc.subjectSpeciation
dc.subjectPhytoavailability
dc.subjectNanosilver
dc.subjectSilver sulfide nanoparticles
dc.subjectRetention
dc.subjectTransformation
dc.subjectSilver speciation
dc.subjectSoil property
dc.titleHigh retention of silver sulfide nanoparticles in natural soils
dc.typejournal article
dspace.entity.typePublication
oaire.citation.startPageUNSP 120735
oaire.citation.titleJournal of Hazardous Materials
oaire.citation.volume378
person.familyNameNunes
person.givenNameLuís
person.identifier93800
person.identifier.ciencia-id3112-1FCD-6685
person.identifier.orcid0000-0001-5606-970X
person.identifier.ridM-4647-2013
person.identifier.scopus-author-id7102529511
rcaap.rightsopenAccesspt_PT
rcaap.typearticle
relation.isAuthorOfPublicationd32d0ac6-6cb6-4f03-afcf-3c80978d469f
relation.isAuthorOfPublication.latestForDiscoveryd32d0ac6-6cb6-4f03-afcf-3c80978d469f

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