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Open AccessReview

Solute Reactive Tracers for Hydrogeological Applications: A Short Review and Future Prospects

1
Faculty of Natural Sciences, Hung Vuong University, Nguyen Tat Thanh Str., Viet Tri, 35120 Phu Tho, Vietnam
2
Lower Saxony Water Management, Coastal Defence and Nature Conservation Agency (NLWKN), Hanover-Hildesheim branch, An der Scharlake 39, 31135 Hildesheim, Germany
3
Geoscience Centre, Department of Applied Geology, University of Goettingen, Goldschmidtstr. 3, 37077 Göttingen, Germany
4
Applied Geology, Institute of Geology, Mineralogy and Geophysics, Ruhr University Bochum, Universitätsstr. 150, 44801 Bochum, Germany
*
Author to whom correspondence should be addressed.
Water 2020, 12(3), 653; https://doi.org/10.3390/w12030653
Received: 30 January 2020 / Revised: 26 February 2020 / Accepted: 27 February 2020 / Published: 28 February 2020
Tracer testing is a mature technology used for characterizing aquatic flow systems. To gain more insights from tracer tests a combination of conservative (non-reactive) tracers together with at least one reactive tracer is commonly applied. The reactive tracers can provide unique information about physical, chemical, and/or biological properties of aquatic systems. Although, previous review papers provide a wide coverage on conservative tracer compounds there is no systematic review on reactive tracers yet, despite their extensive development during the past decades. This review paper summarizes the recent development in compounds and compound classes that are exploitable and/or have been used as reactive tracers, including their systematization based on the underlying process types to be investigated. Reactive tracers can generally be categorized into three groups: (1) partitioning tracers, (2) kinetic tracers, and (3) reactive tracers for partitioning. The work also highlights the potential for future research directions. The recent advances from the development of new tailor-made tracers might overcome existing limitations. View Full-Text
Keywords: reactive tracers; tailor-made tracer design; hydrogeological tracer test; kinetics; partitioning reactive tracers; tailor-made tracer design; hydrogeological tracer test; kinetics; partitioning
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MDPI and ACS Style

Cao, V.; Schaffer, M.; Taherdangkoo, R.; Licha, T. Solute Reactive Tracers for Hydrogeological Applications: A Short Review and Future Prospects. Water 2020, 12, 653.

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