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| Titel |
Bacteriophages as surface and ground water tracers |
| VerfasserIn |
P. Rossi, N. Dörfliger, K. Kennedy, I. Müller, M. Aragno |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1027-5606
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| Digitales Dokument |
URL |
| Erschienen |
In: Hydrology and Earth System Sciences ; 2, no. 1 ; Nr. 2, no. 1, S.101-110 |
| Datensatznummer |
250000397
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| Publikation (Nr.) |
 copernicus.org/hess-2-101-1998.pdf |
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| Zusammenfassung |
Bacteriophages are increasingly used as tracers for
quantitative analysis in both hydrology and hydrogeology. The biological particles are
neither toxic nor pathogenic for other living organisms as they penetrate only a specific
bacterial host. They have many advantages over classical fluorescent tracers and offer the
additional possibility of multi-point injection for tracer tests. Several years of
research make them suitable for quantitative transport analysis and flow boundary
delineation in both surface and ground waters, including karst, fractured and porous media
aquifers.
This article presents the effective application of bacteriophages based on their
use in differing Swiss hydrological environments and compares their behaviour to
conventional coloured dye or salt-type tracers. In surface water and karst aquifers,
bacteriophages travel at about the same speed as the typically referenced fluorescent
tracers (uranine, sulphurhodamine G extra). In aquifers of interstitial porosity, however,
they appear to migrate more rapidly than fluorescent tracers, albeit with a significant
reduction in their numbers within the porous media. This faster travel time implies that a
modified rationale is needed for defining some ground water protection area boundaries.
Further developments of other bacteriophages and their documentation as tracer methods
should result in an accurate and efficient tracer tool that will be a proven alternative
to conventional fluorescent dyes. |
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