Best practice methods for the chemical and isotopic characterisation of porewater in low-permeability bedrock

Eichinger, Florian; Waber, H. Niklaus; Aschwanden, Lukas; Lippman-Pipke, Johanna; Rufer, Daniel; Bath, Adrian (2024). Best practice methods for the chemical and isotopic characterisation of porewater in low-permeability bedrock. Grundwasser Springer 10.1007/s00767-023-00563-4

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Sedimentary and crystalline rock formations are currently being intensely investigated in several countries as potential host rocks for deep geological repositories for radioactive wastes. An important aspect of investigations is to characterise and understand the movement and compositions of water in these rocks—both mobile groundwater in aquifers and faults/fractures, and immobile porewater in the matrix of intact rock. Non-reactive solutes, primarily Cl and Br, water isotope ratios, and dissolved helium are ‘natural tracers’ of diffusive transport and exchange between groundwater and porewater.
Recent developments of techniques for extracting and analysing porewaters from carefully preserved drill cores are summarised in this paper. It identifies practical challenges and suggests best practice strategies based on experience gained by various national research and repository programs in crystalline and sedimentary rocks.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Institute of Geological Sciences
08 Faculty of Science > Institute of Geological Sciences > Rock-Water Interaction

UniBE Contributor:

Aschwanden, Lukas, Rufer, Daniel

Subjects:

500 Science > 550 Earth sciences & geology

ISSN:

1430-483X

Publisher:

Springer

Language:

English

Submitter:

Daniel Rufer

Date Deposited:

24 Jan 2024 14:57

Last Modified:

24 Jan 2024 14:57

Publisher DOI:

10.1007/s00767-023-00563-4

BORIS DOI:

10.48350/192080

URI:

https://boris.unibe.ch/id/eprint/192080

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