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dc.contributor.authorUlrich, A.-
dc.contributor.authorLosert, S.-
dc.contributor.authorBendixen, Nina-
dc.contributor.authorAl-Kattan, A.-
dc.contributor.authorHagendorfer, H.-
dc.contributor.authorNowack, B.-
dc.contributor.authorAdlhart, Christian-
dc.contributor.authorEbert, Jürgen-
dc.contributor.authorLattuada, M.-
dc.contributor.authorHungerbühler, Karin-
dc.date.accessioned2018-01-17T10:05:36Z-
dc.date.available2018-01-17T10:05:36Z-
dc.date.issued2012-
dc.identifier.issn0267-9477de_CH
dc.identifier.urihttps://digitalcollection.zhaw.ch/handle/11475/2076-
dc.description.abstractThe analysis of engineered nanomaterials (ENMs), especially nanoparticles (ENPs) is a fast growing analytical research field. New trends in plasma spectrometry such as direct single particle inductively coupled plasma mass spectrometry (spICPMS) or the coupling of asymmetric flow field flow fractionation to ICPMS (A4F-ICPMS) allow direct analysis of ENPs by getting not only chemical but also size information simultaneously. However, in both techniques dilution of ENP samples is needed or occurs during analysis. The colloidal stability and the agglomeration behavior depend on the ENP-type, coating agent and also on the surrounding media. The stability of charge stabilized ENPs is especially sensitive to changes of pH or ionic strength, sometimes even to dilution. Although the stability of sterically stabilized ENP is typically less affected by the above mentioned factors, agglomeration can still occur in certain environments. Thus, storage, handling and sample preparation is a big challenge in ENP analysis. Kinetic studies of different ENPs, representative for typical nanoparticle types and coatings, point out that the behavior is dependent on various influencing factors pertaining to the chemical environment (pH, ionic strength, dilution). In this study polyvinyl alcohol (Ag@PVA) and citrate (Ag@citrate) stabilized silver nanoparticles, as well as titanium oxide ENPs coated with poly-acrylate (TiO2@PA) have been studied. A simple analytical approach using batch analysis with dynamic light scattering (DLS) is proposed for a fast assessment of samples containing unknown ENP types or structures. Furthermore, unwanted particle-membrane-interactions, which often lead to inappropriate recovery rates in A4F fractionation, are investigated. They are caused by the electrostatic charges carried by different membrane materials and the resulting interaction with the ENP charge. This is critically discussed for membrane materials typical for A4F analysis: polyethersulfone (PES), regenerated cellulose (RC), and polyvinylidene difluoride (PVDF).de_CH
dc.language.isoende_CH
dc.publisherRoyal Society of Chemistryde_CH
dc.relation.ispartofJournal of Analytical Atomic Spectrometryde_CH
dc.rightsLicence according to publishing contractde_CH
dc.subjectParticle-membrane interactionde_CH
dc.subjectEngineered nanoparticlesde_CH
dc.subjectICPMSde_CH
dc.subjectField flow fractionationde_CH
dc.subject.ddc620: Ingenieurwesende_CH
dc.titleCritical aspects of sample handling for direct nanoparticle analysis and analytical challenges using asymmetric field flow fractionation in a multi-detector approachde_CH
dc.typeBeitrag in wissenschaftlicher Zeitschriftde_CH
dcterms.typeTextde_CH
zhaw.departementLife Sciences und Facility Managementde_CH
zhaw.organisationalunitInstitut für Chemie und Biotechnologie (ICBT)de_CH
zhaw.publisher.placeLondonde_CH
dc.identifier.doi10.1039/C2JA30024Ade_CH
zhaw.funding.euNode_CH
zhaw.issue7de_CH
zhaw.originated.zhawYesde_CH
zhaw.pages.end1130de_CH
zhaw.pages.start1120de_CH
zhaw.publication.statuspublishedVersionde_CH
zhaw.volume27de_CH
zhaw.publication.reviewPeer review (Publikation)de_CH
Appears in collections:Publikationen Life Sciences und Facility Management

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Ulrich, A., Losert, S., Bendixen, N., Al-Kattan, A., Hagendorfer, H., Nowack, B., Adlhart, C., Ebert, J., Lattuada, M., & Hungerbühler, K. (2012). Critical aspects of sample handling for direct nanoparticle analysis and analytical challenges using asymmetric field flow fractionation in a multi-detector approach. Journal of Analytical Atomic Spectrometry, 27(7), 1120–1130. https://doi.org/10.1039/C2JA30024A
Ulrich, A. et al. (2012) ‘Critical aspects of sample handling for direct nanoparticle analysis and analytical challenges using asymmetric field flow fractionation in a multi-detector approach’, Journal of Analytical Atomic Spectrometry, 27(7), pp. 1120–1130. Available at: https://doi.org/10.1039/C2JA30024A.
A. Ulrich et al., “Critical aspects of sample handling for direct nanoparticle analysis and analytical challenges using asymmetric field flow fractionation in a multi-detector approach,” Journal of Analytical Atomic Spectrometry, vol. 27, no. 7, pp. 1120–1130, 2012, doi: 10.1039/C2JA30024A.
ULRICH, A., S. LOSERT, Nina BENDIXEN, A. AL-KATTAN, H. HAGENDORFER, B. NOWACK, Christian ADLHART, Jürgen EBERT, M. LATTUADA und Karin HUNGERBÜHLER, 2012. Critical aspects of sample handling for direct nanoparticle analysis and analytical challenges using asymmetric field flow fractionation in a multi-detector approach. Journal of Analytical Atomic Spectrometry. 2012. Bd. 27, Nr. 7, S. 1120–1130. DOI 10.1039/C2JA30024A
Ulrich, A., S. Losert, Nina Bendixen, A. Al-Kattan, H. Hagendorfer, B. Nowack, Christian Adlhart, Jürgen Ebert, M. Lattuada, and Karin Hungerbühler. 2012. “Critical Aspects of Sample Handling for Direct Nanoparticle Analysis and Analytical Challenges Using Asymmetric Field Flow Fractionation in a Multi-Detector Approach.” Journal of Analytical Atomic Spectrometry 27 (7): 1120–30. https://doi.org/10.1039/C2JA30024A.
Ulrich, A., et al. “Critical Aspects of Sample Handling for Direct Nanoparticle Analysis and Analytical Challenges Using Asymmetric Field Flow Fractionation in a Multi-Detector Approach.” Journal of Analytical Atomic Spectrometry, vol. 27, no. 7, 2012, pp. 1120–30, https://doi.org/10.1039/C2JA30024A.


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