MiniRUEDI portable membrane injection mass spectrometer for measuring water gas

miniRUEDIPortable membrane injection mass spectrometer

MiniRUEDI portable membrane injection mass spectrometerIt is a portable mass spectrometer used forQuantitative analysis of gasesandin the waterHe(Helium)Ne(Neon)Ar(Argon)Kr(Krypton)N₂(Nitrogen)O₂(Oxygen)CO₂(Carbon dioxide)CH₄(Methane)H₂(Hydrogen) and other gas components.

This instrument is developed by the Swiss Federal Institute of Aquatic Science and Technology（EAdi）Develop (and continuously improve). Specially designed for environmental research, capable of conducting maintenance free on-site gas analysis in remote wilderness areas.

The coupling technology between its membrane sampler and mass spectrometer is based on gas equilibrium membrane injection mass spectrometry，Capable of simple and accurate quantitative analysis of flowing water(Traffic)≳1L/min）In the middleThe dissolved gas concentration does not require calibration using external water standards with known gas concentrations.

The control software and data processing software of the instrument support the repeatability of analysis results, long-term analysis use, and also allow users to flexibly implement gas analysis and data processing for specific applications.

Main Features

uAccurate quantitative analysisGas or waterHeTheNeTheArTheKrTheN₂TheO₂TheCO₂TheCH₄TheH₂Waiting for ingredients.

umembraneinjectionmethodCan accurately and without deviation quantitatively analyze dissolved gases in water.

uSimple and reliable calibrationCalibration using ambient air or standard gas(Suitable not only for gas analysis, but also for water analysis)，No need to rely on water standards with known gas concentrations that are difficult to prepare and process, simplifying the calibration process.

uSpecially designed for maintenance free on-site gas analysis in remote areas：

²Simple and automated calibration

²low power consumption

²sturdy structure

²maintenance-free

²Support remote control

Technical Specifications

lAnalysis scope:ppmLevel up to100%v/v(Used in a gas matrix similar to air)HeTheArandKrConduct testing)

lAnalysis uncertainty: usually1-3%(Already in a gas matrix similar to air)HeTheArTheKrTheN₂andO₂Conduct testing)

lCalibration: Using ambient air as a standard gas for analyzing gases similar to air or waterHeTheArTheKrTheN₂andO₂

lGas inlet: equipped at atmospheric pressure6One air inlet (the number of air inlets can be increased according to requirements)

lLow sample gas consumption:≤0.1mL/min

lSize and weight (including portable case):80cm×52cm×32cm，32kg

lPower Supply:24V（DC）, can be used110-230VAC power（AC）Power converter (included) or battery, solar panel, etc. for power supply

lpower waste:50W(During normal operation)

lSoftware: Used for instrument control and data processing, supporting flexible implementation of customized analysis programs and data processing (supporting)PythonTheGNU Octave）.

accessories

lGE-MIMSMembrane module:Used for dissolved gas analysis in water.

lTotal gas pressure sensor(For example, used forGE-MIMSAnalysis), andruediPySoftware compatibility.

ltemperature sensor(For example, used forGE-MIMSAnalysis), andruediPySoftware compatibility.

Application Cases

case1Research on Deep Groundwater in Mount Fuji

Oliver SchillingAnd its team collaborationminiRUEDIData and environmentDNABy using vanadium tracer, it was observed that the freshwater springs of Mount Fuji are not only supplied by the recharge water from high-altitude areas, but also affected by the upwelling of deep groundwater. The hydrological system of Mount Fuji is more complex than previously thought.

case2Boas（Poas）Volcanic gas analysis

Alan SeltzerandMike BroadleyWaiting for useminiRUEDIAnalyze the gases in the pores of Mount Boas.

case3:Detecting groundwater flow direction

Swiss Federal Institute for Aquatic Science and Technology（EAdi）With its partnersCHYNandRhesiuseminiRUEDIWe tracked the flow of groundwater near a large river. In order to simulate natural erosion events that may occur after river restoration, the riverbed was manually excavated. Researchers inject different rare gases into different groundwater flows and utilize themminiRUEDIMonitor the breakthrough curve in nearby pumping wells. This injection experiment was repeated multiple times within a year. These measurement results reveal how the exchange between rivers and groundwater changes as the riverbed is excavated and 'healed' after erosion. This new tracer tool and the insights it brings are of great significance for the management of groundwater and the production of drinking water near the restoration of river systems.

case4Research on groundwaterPCEpollution

Chrisitan MoeckandThickuseminiRUEDIStudied groundwater flow and vinyl chloride in urban water systems（PCE）The transportation. They useminiRUEDIMeasure dissolved substancesHeConcentration to establish and³H/³HeThe relationship between groundwater age characterizes water flow and provides a concept of groundwater systems. Groundwater age data（miniRUEDI He,³H/³He）Related to hydrochemical data and water isotopes（¹⁸Oand²H）AndPCEThe combination of concentration shows the spatial mixing between artificially infiltrated groundwater and regional channel water. In addition, the age of groundwater is related toPCEThe correlation of concentration explains the groundwater systemPCEThe spatial distribution of pollution. Meanwhile, it was observed that the fault provided a preferred flow path, leading toPCEThe concentration increases.

case5: miniRUEDIinDIVEApplication in the project

Grenoble, FranceIsterreLaboratory and Potsdam, GermanyGFZThe German Earth Science Research CenterDIVEInternational Continental Drilling Program（ICDP）Collaborate in the project to monitor gases in real-time during the drilling process. In ItalyIvrea-VerbanoTwo nearly kilometer deep boreholes were drilled in the region to explore the deep continental crust and its transition to the mantle.miniRUEDISuccessfully deployed along with other gas analyzers throughout the entire drilling process (running continuously for four months each time). PhD from Grenoble Alpes UniversityHugo DutoitResponsible for monitoring work, data shows that the migration of deep fracture fluids can be tracked through mud gas logging.

case6：miniRUEDINot limited to groundwater research, but as a new tool for testing multi gas tracers

Swiss Federal Institute for Aquatic Science and Technology（EAdi）University of Neuch â tel（Uni Neuchatel）Collaborated, developed and testedminiRUEDIAs a tool for manual tracing testing using different rare gases.

In the first test, helium pulses were injected into the river.miniRUEDIUsed to analyze the helium concentration in nearby groundwater systems, the observed helium breakthrough curve indicates a significant loss of river water to the underlying aquifer. In the second test, multiple pulses of different rare gases (helium, krypton, and xenon) were injected into different locations of the aquifer.miniRUEDIUsed to record breakthrough curves of different gases in downstream groundwater flow, revealing changes in groundwater flow field and demonstrating how the flow field responds to changes in hydraulic connectivity between nearby rivers and aquifers. In these two tests,miniRUEDIEfficiently providing valuable new insights into the exchange between rivers and groundwater and its impact on groundwater quality.

case7:miniRUEDIRevealing how gases control the accumulation of arsenic in drinking water

Alex LightfootThe Swiss Federal Institute for Aquatic Science and Technology（EAdi）Commonwealth Scientific and Industrial Research Organisation of Australia（CSIRO）The Dutch Groundwater System Research Program（RIBES）And Karlsruhe Institute of Technology（KIT）Researchers useminiRUEDIStudied the interaction between groundwater and gases in the aquifer of the Red River Delta (Vietnam). Research has shown how gases control the migration and accumulation of arsenic in groundwater.