In situ speciation measurement of trace components using thin-film gels
DGT for measurements in waters, soils and sediments
What is it ?
DGT stands for diffusive gradients in thin films. Simple, but precision plastic DGT devices accumulate dissolved substances in a controlled way. Conventional analysis in the laboratory provides the in situ concentration at the time of deployment.
Uses ?
- For measduring, trace metals, phosphate, sulphide and radionuclides.
- Measures average concentrations (hours to weeks) in freshwater and seawater.
- Measures both fluxes and concentations in soils and sediments.
- Measures effective hazardous concentrations (bioavailable fraction).
- Measures at high spatial resolutions (microns to centimeters)