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Membrane Interface Probe (MIP) |
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The Membrane Interface Probe (MIP) is an advanced site investigation tool that provides a reliable and
accurate understanding of VOC contaminant location, site geology and transport paths.
The MIP heats the adjacent soil and groundwater to
100-120°C volatilizing VOC contaminants that are present.
These vapors diffuse across a semi permeable membrane into a closed inert gas loop.
A continuous carrier gas flows through the system at a rate ranging from 35-45 ml/min bringing the
compounds to the surface to be analyzed by a series of detectors in a mobile lab.
The travel time from the membrane to the detectors ranges from 30-60sec depending on carrier flow rate and the length of
trunkline.
Our MIP system can be deployed with any of our probes and can be run by the generator or plugged into 120V electric for a non emmision option for inside projects.
Matrix’s MIP system uses up to three detectors at once: PID, XSD and FID for one of
the most effective compound detection systems available in a traditional MIP configuration.
This detector series allows our experienced chemists the ability to determine the “family” of compounds present
in a log by examining which combination of detectors that the compounds are responding on.
The MIP/EC log provides semi quantitative/qualitative information on contaminant levels.
Matrix highly recommends that targeted samples be collected from contaminated zones to confirm
specific compounds and precise concentrations. These samples can either be analyzed in one
of our mobile labs or have them sent to a fixed based lab.
Advantages:
- Continuous chemical and physical logs are simultaneously graphed in real time.
- Able to detect both chlorinated and non-chlorinated VOCs down to <500ppb.
- Works in both in the vadose and saturated zones.
- MIP/EC logging can reach 200-300 feet per day.
- Log graphs are printed immediately after the log is completed.
- Map the horizontal and vertical extent of contaminants.
- The logs can be inputted into 2D or 3D cross-sectional maps of the site.
- Emailing of logs can allow offsite managers to view progress and help make decisions.
- Eliminates soil cuttings during the logging process.
- Save money on remediation costs with the ability to surgically apply remediation efforts.
- Immediate knowledge of the site conditions allow for rapid field decision.
- Photo-ionization detector (PID)
Detects petroleum hydrocarbons, & some chlorinated solvents.
- Halogen specific detector (XSD)
Detects only halogenated solvents, does not respond to petroleum.
- Flame ionization detector (FID)
Detects petroleum hydrocarbons, chlorinated solvents and methane.
These 5 logs recorded in 50' spacing across a site indicate a near surface chlorinated source area (in log#4). As we move away from the source area we can see the contamination amount reducing in concentration and volume and sinking in the aquifer.
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