Analyses of environmental gases which previously required months of laboratory work can now be carried out rapidly in the field. A group of Eawag scientists have developed a portable mass spectrometer allowing on-site measurements – and a spin-off has been created to commercialize the new system.
What are the effects of volcanic gases accumulating in Lake Kivu in central Africa? How does the Rhine’s groundwater system function near Pratteln? What is the best way of controlling greenhouse gas emissions from a landfill in northeastern Switzerland? Answers to questions like these can be provided by a newly developed portable mass spectrometer – by the researchers named “miniRuedi” – which allows gas and water samples to be analysed on site and in real time. For example, the concentrations of different gases were determined at a landfill during a one-day measurement campaign. This study supports the optimisation measures to aerate the landfill in order to reduce the formation of methane, a strong greenhouse gas.
Analyses of environmental gases which previously required months of laboratory work can now be carried out rapidly in the field. A group of Eawag scientists have developed a portable mass spectrometer allowing on-site measurements – and a spin-off has been created to commercialize the new system.
What are the effects of volcanic gases accumulating in Lake Kivu in central Africa? How does the Rhine’s groundwater system function near Pratteln? What is the best way of controlling greenhouse gas emissions from a landfill in northeastern Switzerland? Answers to questions like these can be provided by a newly developed portable mass spectrometer – by the researchers named “miniRuedi” – which allows gas and water samples to be analysed on site and in real time. For example, the concentrations of different gases were determined at a landfill during a one-day measurement campaign. This study supports the optimisation measures to aerate the landfill in order to reduce the formation of methane, a strong greenhouse gas.
System in a suitcase
Eawag environmental physicist Matthias Brennwald, who developed the portable mass spectrometer, explains: “Our instrument, weighing 13 kilograms and mounted in a wheeled suitcase, can be taken to the most remote locations. Once it’s been installed on site, the Mini-Ruedi can immediately and efficiently measure gases using very small samples, so it doesn’t interfere with the natural dynamics of the environment.” The system, which can operate autonomously, provides continuous measurements of a wide range of gases. The most suitable sites and times for sampling can thus be identified immediately. Long-term operation is also possible. As Brennwald points out, “Analyses which in the past would have been inconceivable – partly for financial reasons, as they’d have involved months of laboratory work – are now suddenly possible.”
Read more at Swiss Federal Institute of Aquatic Science and Technology
Image courtesy of EAWAG: Swiss Federal Institute of Aquatic Science and Technology
