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Metal associations to microparticles, nanocolloids and macromolecules in compost leachates: Size characterization by asymmetrical flow field-flow fractionation coupled to ICP-MS

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Title: Metal associations to microparticles, nanocolloids and macromolecules in compost leachates: Size characterization by asymmetrical flow field-flow fractionation coupled to ICP-MS
Authors: Bolea, E. edbolea@unizar.es, Laborda, F.1, Castillo, J.R.1
Source: Analytica Chimica Acta. Feb2010, Vol. 661 Issue 2, p206-214. 9p.
Subjects: Leachate, Composting, Metals, Nanoparticles, Nanofluids, Macromolecules, Particle size determination, Field-flow fractionation, Inductively coupled plasma mass spectrometry
Abstract: Abstract: A methodological approach based on the size characterization of environmental microparticles (size larger than 1μm), nanocolloids (1μm to 15nm) and macromolecules (lower than 1000kDa) by asymmetrical flow field-flow fractionation (AsFlFFF), taking advantage of both normal and steric elution modes, is presented. The procedure was optimized to minimize the potential alteration of the size distribution and metal associations of the species characterized. Prior to separation by AsFlFFF, samples are subjected to gravitational settling of the solid suspension, followed by a centrifugation of the settled sample. The comparison between the fractograms of the settled and the centrifuged samples allows the characterization of the microparticles, which are eluted in steric mode in the AsFlFFF system. The characterization of nanocolloids and macromolecules is carried out on the centrifuged sample by applying different operational conditions under normal mode in the AsFlFFF system. A comparison with the conventional frontal filtration through 0.45μm pore size membranes have shown that filtration removes particles below their nominal pore size, modifying the size distribution of the samples respect to the centrifugation. The methodology proposed has been applied to the size characterization of compost leachates. The contribution of these three differentiated fractions to the mobilization of metals has been determined by coupling the AsFlFFF system to an inductively coupled plasma mass spectrometer (ICP-MS). [Copyright &y& Elsevier]
Copyright of Analytica Chimica Acta is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 47826749
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PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Metal associations to microparticles, nanocolloids and macromolecules in compost leachates: Size characterization by asymmetrical flow field-flow fractionation coupled to ICP-MS
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  Data: <searchLink fieldCode="AR" term="%22Bolea%2C+E%2E%22">Bolea, E.</searchLink><i> edbolea@unizar.es</i><br /><searchLink fieldCode="AR" term="%22Laborda%2C+F%2E%22">Laborda, F.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Castillo%2C+J%2ER%2E%22">Castillo, J.R.</searchLink><relatesTo>1</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Analytica+Chimica+Acta%22">Analytica Chimica Acta</searchLink>. Feb2010, Vol. 661 Issue 2, p206-214. 9p.
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  Data: <searchLink fieldCode="DE" term="%22Leachate%22">Leachate</searchLink><br /><searchLink fieldCode="DE" term="%22Composting%22">Composting</searchLink><br /><searchLink fieldCode="DE" term="%22Metals%22">Metals</searchLink><br /><searchLink fieldCode="DE" term="%22Nanoparticles%22">Nanoparticles</searchLink><br /><searchLink fieldCode="DE" term="%22Nanofluids%22">Nanofluids</searchLink><br /><searchLink fieldCode="DE" term="%22Macromolecules%22">Macromolecules</searchLink><br /><searchLink fieldCode="DE" term="%22Particle+size+determination%22">Particle size determination</searchLink><br /><searchLink fieldCode="DE" term="%22Field-flow+fractionation%22">Field-flow fractionation</searchLink><br /><searchLink fieldCode="DE" term="%22Inductively+coupled+plasma+mass+spectrometry%22">Inductively coupled plasma mass spectrometry</searchLink>
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  Data: Abstract: A methodological approach based on the size characterization of environmental microparticles (size larger than 1μm), nanocolloids (1μm to 15nm) and macromolecules (lower than 1000kDa) by asymmetrical flow field-flow fractionation (AsFlFFF), taking advantage of both normal and steric elution modes, is presented. The procedure was optimized to minimize the potential alteration of the size distribution and metal associations of the species characterized. Prior to separation by AsFlFFF, samples are subjected to gravitational settling of the solid suspension, followed by a centrifugation of the settled sample. The comparison between the fractograms of the settled and the centrifuged samples allows the characterization of the microparticles, which are eluted in steric mode in the AsFlFFF system. The characterization of nanocolloids and macromolecules is carried out on the centrifuged sample by applying different operational conditions under normal mode in the AsFlFFF system. A comparison with the conventional frontal filtration through 0.45μm pore size membranes have shown that filtration removes particles below their nominal pore size, modifying the size distribution of the samples respect to the centrifugation. The methodology proposed has been applied to the size characterization of compost leachates. The contribution of these three differentiated fractions to the mobilization of metals has been determined by coupling the AsFlFFF system to an inductively coupled plasma mass spectrometer (ICP-MS). [Copyright &y& Elsevier]
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  Data: <i>Copyright of Analytica Chimica Acta is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1016/j.aca.2009.12.021
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        Text: English
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        PageCount: 9
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      – SubjectFull: Leachate
        Type: general
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      – SubjectFull: Metals
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      – SubjectFull: Nanoparticles
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      – SubjectFull: Macromolecules
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      – SubjectFull: Particle size determination
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      – SubjectFull: Field-flow fractionation
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      – SubjectFull: Inductively coupled plasma mass spectrometry
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      – TitleFull: Metal associations to microparticles, nanocolloids and macromolecules in compost leachates: Size characterization by asymmetrical flow field-flow fractionation coupled to ICP-MS
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              Text: Feb2010
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