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  • Praetorius, A. (author)

Strategies for determining heteroaggregation attachment efficiencies of engineered nanoparticles in aquatic environments

  • Article/chapterEnglish2020

Publisher, publication year, extent ...

  • 2020
  • Royal Society of Chemistry (RSC),2020

Numbers

  • LIBRIS-ID:oai:gup.ub.gu.se/291225
  • https://gup.ub.gu.se/publication/291225URI
  • https://doi.org/10.1039/c9en01016eDOI

Supplementary language notes

  • Language:English

Part of subdatabase

Classification

  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • Heteroaggregation of engineered nanoparticles (ENPs) with suspended particulate matter (SPM) ubiquitous in natural waters often dominates the transport behaviour and overall fate of ENPs in aquatic environments. In order to provide meaningful exposure predictions and support risk assessment for ENPs, environmental fate and transport models require quantitative information about this process, typically in the form of the so-called attachment efficiency for heteroaggregation alpha(hetero). The inherent complexity of heteroaggregation-encompassing at least two different particle populations, various aggregation pathways and several possible attachment efficiencies (alpha values)-makes its theoretical and experimental determination challenging. In this frontier review we assess the current state of knowledge on heteroaggregation of ENPs with a focus on natural surface waters. A theoretical analysis presents relevant equations, outlines the possible aggregation pathways and highlights different types of alpha. In a second part, experimental approaches to study heteroaggregation and derive alpha values are reviewed and three possible strategies are identified: i) monitoring changes in size, ii) monitoring number or mass distribution and iii) studying indirect effects, such as sedimentation. It becomes apparent that the complexity of heteroaggregation creates various challenges and no single best method for its assessment has been developed yet. Nevertheless, many promising strategies have been identified and meaningful data can be derived from carefully designed experiments when accounting for the different concurrent aggregation pathways and clearly stating the type of alpha reported. For future method development a closer connection between experiments and models is encouraged.

Subject headings and genre

  • NATURVETENSKAP Biologi Ekologi hsv//swe
  • NATURAL SCIENCES Biological Sciences Ecology hsv//eng
  • suspended particulate matter
  • titanium-dioxide nanoparticles
  • hematite
  • colloids influence
  • zero-valent iron
  • particle icp-ms
  • organic-matter
  • gold nanoparticles
  • inorganic colloids
  • silver nanoparticles
  • deposition
  • kinetics
  • Chemistry
  • Environmental Sciences & Ecology
  • Science & Technology -
  • Other Topics

Added entries (persons, corporate bodies, meetings, titles ...)

  • Badetti, E. (author)
  • Brunelli, A. (author)
  • Clavier, A. (author)
  • Gallego-Urrea, Julian A.,1977Gothenburg University,Göteborgs universitet,Institutionen för marina vetenskaper,Department of marine sciences(Swepub:gu)xurrju (author)
  • Gondikas, Andreas P.,1981Gothenburg University,Göteborgs universitet,Institutionen för marina vetenskaper,Department of marine sciences(Swepub:gu)xgonan (author)
  • Hassellöv, Martin,1970Gothenburg University,Göteborgs universitet,Institutionen för marina vetenskaper,Department of marine sciences(Swepub:gu)xhassm (author)
  • Hofmann, T. (author)
  • Mackevica, A. (author)
  • Marcomini, A. (author)
  • Peijnenburg, W. (author)
  • Quik, J. T. K. (author)
  • Seijo, M. (author)
  • Stoll, S. (author)
  • Tepe, N. (author)
  • Walch, H. (author)
  • von der Kammer, F. (author)
  • Göteborgs universitetInstitutionen för marina vetenskaper (creator_code:org_t)

Related titles

  • In:Environmental Science-Nano: Royal Society of Chemistry (RSC)7:2, s. 351-3672051-81532051-8161

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