loading page

Settling of superparamagnetic silica encapsulated DNA microparticles in river water
  • +4
  • Yuchen Tang,
  • Fengbo Zhang,
  • J.W. Foppen,
  • Thom Bogaard,
  • Claire Chassagne,
  • Zeeshan Ali,
  • Sulalit Bandyopadhyay
Yuchen Tang
Technische Universiteit Delft Faculteit Civiele Techniek en Geowetenschappen

Corresponding Author:[email protected]

Author Profile
Fengbo Zhang
IHE Delft Institute for Water Education
Author Profile
J.W. Foppen
Technische Universiteit Delft Faculteit Civiele Techniek en Geowetenschappen
Author Profile
Thom Bogaard
Technische Universiteit Delft Faculteit Civiele Techniek en Geowetenschappen
Author Profile
Claire Chassagne
Technische Universiteit Delft Faculteit Civiele Techniek en Geowetenschappen
Author Profile
Zeeshan Ali
Norges teknisk-naturvitenskapelige universitet
Author Profile
Sulalit Bandyopadhyay
Norges teknisk-naturvitenskapelige universitet
Author Profile

Abstract

Particle tracers are sometimes used to track sources and sinks of riverine particulate and contaminant transport. A potentially new particle tracer is ~200 nm sized superparamagnetic silica encapsulated DNA (SiDNAFe). The main objective of this research was to understand and quantify the settling and aggregation behaviour of SiDNAFe in river waters. Our results indicated, that in quiescent conditions, more than 60% of SiDNAFe settled within 30 hours, starting with a rapid settling phase followed by an exponential-like slow settling phase in the three river waters we used (Meuse, Merkske, and Strijbeek) plus MilliQ water. From this, we inferred that the rapid SiDNAFe settling was mainly due to homo-aggregation and not due to hetero-aggregation (e.g., with particulate matter present in river water). Incorporating a first-order mass loss term which mimics the exponential phase of the settling in quiescent conditions seems to be an adequate step forward when modelling the transport of SiDNAFe in river injection experiments. Furthermore, we validated the applicability of magnetic separation and up-concentration of SiDNAFe in real river waters, which is an important advantage for carrying out field-scale SiDNAFe tracing experiments.
21 Jul 2022Submitted to Hydrological Processes
27 Jul 2022Submission Checks Completed
27 Jul 2022Assigned to Editor
28 Jul 2022Reviewer(s) Assigned
03 Oct 2022Review(s) Completed, Editorial Evaluation Pending
05 Oct 2022Editorial Decision: Revise Major
10 Nov 20221st Revision Received
11 Nov 2022Submission Checks Completed
11 Nov 2022Assigned to Editor
11 Nov 2022Reviewer(s) Assigned
15 Nov 2022Reviewer(s) Assigned
17 Dec 2022Review(s) Completed, Editorial Evaluation Pending
19 Dec 2022Editorial Decision: Revise Minor
22 Dec 20222nd Revision Received
27 Dec 2022Assigned to Editor
27 Dec 2022Submission Checks Completed
27 Dec 2022Reviewer(s) Assigned
27 Dec 2022Review(s) Completed, Editorial Evaluation Pending
28 Dec 2022Editorial Decision: Accept
Jan 2023Published in Hydrological Processes volume 37 issue 1. 10.1002/hyp.14801