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| Titel |
Using DNA-labelled nano- and microparticles to track particle transport in the environment |
| VerfasserIn |
Coy McNew, Chaozi Wang, Helen Dahlke, Steve Lyon, Todd Walter |
| Konferenz |
EGU General Assembly 2017
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| Medientyp |
Artikel
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| Sprache |
en
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 19 (2017) |
| Datensatznummer |
250146365
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| Publikation (Nr.) |
 EGU/EGU2017-10389.pdf |
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| Zusammenfassung |
| By utilizing bio-molecular nanotechnology developed for nano-medicines and drug
delivery, we are able to produce DNA-labelled nano- and microparticle tracers for
use in a myriad of environmental systems. The use of custom sequenced DNA
allows for the fabrication of an enormous number of uniquely labelled tracers with
identical transport properties (approximately 1.61 x 1060 unique sequences), each
independently quantifiable, that can be applied simultaneously in any hydrologic system. By
controlling the fabrication procedure to produce particles of custom size and charge, we
are able to tag each size-charge combination uniquely in order to directly probe
the effect of these variables on the transport properties of the particles. Here we
present our methods for fabrication, extraction, and analysis of the DNA nano- and
microparticle tracers, along with results from several successful applications of the tracers,
including transport and retention analysis at the lab, continuum, and field scales.
To date, our DNA-labelled nano- and microparticle tracers have proved useful in
surface and subsurface water applications, soil retention, and even subglacial flow
pathways. The range of potential applications continue to prove nearly limitless. |
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