ResearchInfrastructure@GFZ | Hydrogeochemisches Monitoring

Hydrogeochemisches Monitoring

Fig 1. Flow-through measuring cell for determining physico-chemical parameters (T. Ballerstedt, GFZ)

Fig 2. Measurement of rock samples with portable XRF (X-ray fluorescence analysis) handheld spectrometer for the quantification of elements in rock (T. Ballerstedt, GFZ)

Contact:

Simona Regenspurg

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Infrastructure belongs to:

Section 4.3 Geoenergy

Monitoring of geochemical and hydrochemical-physical parameters in the field

Portable Fluid-Monitoring System incl. flow-through cell „FluMini"

The portable fluid monitoring system has been developed for continuous in situ measurements of physico-chemical parameters of produced water e.g. borehole tests and geothermal fluid loops. Temperature, specific electrical conductivity, pH-value, dissolved oxygen and redox potential (all Endress + Hauser) can be measured simultaneously at pressures and temperatures up to 9 bar and 120 °C, with two filters connected in parallel upstream preventing any clogging of the flow-through cell.

Portable XRF Spectrometry

p-XRF is a non-destructive simple to handle elemental analysis technique. It provides a real-time quantification of many elements from Mg to U, which makes it a handy tool on drilling sites. Furthermore, scales can be identified quickly, and suitable sampling locations can be found by screening cores and outcropping rocks.

Disciplinary Keywords

Instrumentation

Instruments

Portable Fluid-Monitoring System incl. flow-through cell „FluMini"
X-Ray Fluorescence Spectrometer

X-Ray Fluorescence spectrometer (XRF: Primary X-Rays are used to excite (fluoresce) X-rays in the specimen. A fused disc or pressed pellet is used for the determination of major element concentrations or trace element abundances in a bulk specimen. The X-ray detector utilizes a set of diffracting crystals specially positioned to detect one characteristic X-ray at-a-time. This sequential measurement of X-rays is termed Wavelength Dispersive Spectroscopy (WDS). Additional information available at "http://www.nmnh.si.edu/minsci/labs/xrf.htm" (Source: Global Change Master Directory (GCMD). 2023. GCMD Keywords, Version 16.3. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects pision, Goddard Space Flight Center (GSFC) National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords)