The Membrane Interface Probe (MIP), is one of the High Resolution Vertical Profiling tools which COLUMBIA Technologies offers to detect subsurface contamination for environmental site assessments and characterizations. MIP is a multipurpose tool for mapping soil and groundwater contamination, specifically volatile organic compounds (VOCs) such as halogenated solvents and petroleum compounds.
Where can I apply the Membrane Interface Probe as a detector for my environmental site assessments?
- Dry cleaners
- Gasoline/fuel retail stations and petroleum terminals
- Manufacturing facilities, warehouses, and other industrial sites
- Railroads
- Military installations
- Brownfields, Superfunds, and other cleanup sites
- Landfills
- Environmental pre- and post-remediation assessments
What compounds can the Membrane Interface Probe detect for my environmental site assessments?
Dissolved phase and Non-Aqueous Phase Liquid (NAPL), including:
- Halogenated solvents
- Tetrachloroethylene (PCE, also referred to as Perc)
- Trichloroethylene (TCE)
- DCE
- Other non-halogenated solvents
- Petroleum compounds
- Benzene, Toluene, Ethylbenzene, and Xylenes (BTEX)
Please contact us to find out if the MIP can detect other compounds for your specific environmental site assessment.
How can the Membrane Interface Probe be applied at my specific site?
The MIP is a multipurpose tool for mapping soil and groundwater contamination, specifically VOCs such as halogenated solvents and petroleum compounds. As a continuous VOC sampling system which heats the soil, water, and vapor matrix as it is driven into the subsurface, the MIP maps contaminants within the groundwater and the surrounding soil. The VOC mass which is extracted across a semi-permeable membrane is carried to the surface by an inert purge gas via small diameter inert tubing. Once the compounds reach the surface they are analyzed by a suite of three laboratory grade detectors.
The sensor detection system includes:
- Photo Ionization Detector (PID)
- Flame Ionization Detector (FID)
- Electron Capture Detector (ECD)
Together, these three detectors offer a range of sensitivities and a means of discriminating different classes of compounds – anything from chlorinated solvents to gasoline hydrocarbons to methane soil gas. The use of multiple detectors is important for separating different types of contamination such as petroleum (retail gasoline station) from chlorinated solvents (dry cleaners). The complementary range of performance of the different detectors enables the system to function from low contaminant levels to near NAPL levels.
The MIP includes an integrated Electrical Conductivity (EC) probe to provide indication of general soil particle size which can help determine zones of sands, silts, and clays. Using the EC logs you can define zones of lower conductivity which allows the movement of contaminants into the subsurface.
Since our sensors can be deployed from any type of Geoprobe (ranging from all-terrain track rigs to confined-space dolly mounts) we can increase your reach in locations that would typically be difficult to access.
Go from the Membrane Interface Probe page to our High Resolution Vertical Profiling services page.
Do you want to further discuss the possibilities of using MIP technology at your specific site? Complete the form below and we’ll contact you to discuss your scope of work in greater detail.
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