Environmental & Soil Remediation

Environmental remediation deals with the removal of pollution or contaminants from environmental media such as soil, groundwater, sediment, or surface water for the general protection of human health and the environment or from a brownfield site intended for redevelopment. Remediation is generally subject to an array of regulatory requirements, and also can be based on assessments of huma health and ecological risks where no legislated standards exist or where standards are advisory. 

Gases you will frequently measure here, are:

Benzene, Toluene, Ethylbenzene, Xylene, Trichloroethane, Carbon Tetrachloride, Tetrachloroethylene, Trichloroethylene, Mercury, Gasoline, Vinyl Chloride.



The Basic Tools and Techniques of Soil Gas Sampling


Soil gas sampling is an important part of ensuring that outdoor air quality is safe for human and animal populations. It can also determine which areas are likely to yield crops if farmed, and what type of plant life will grow best in a particular location.

Here are a few of the tools that make this process possible, and their function in the overall work of soil gas sampling.


The syringe is the first line of extraction and containment for soil gas sampling. Inserted directly into areas to be sampled from, it allows for samples to be drawn into an air-tight chamber and prevents cross-contamination between samples and outside influences. It also allows for samples to be injected directly into measurement instruments onsite, often negating the need for containment altogether.

Bulbs and Tubing

The glass bulbs or tubes that gas samples are immediately put into can contain a variety of addition substances to aid in containment. Charcoal tubes are those that contain activated charcoal in order to absorb gas contaminants for later examination. Containment inside glass tubing is typically limited to 24 hours or less, as these bulbs and tubes are breakable and allow for leakage of gases over longer-term storage.

Containment Bags

Another storage solution for gas samples is the containment bag. Often made from a DuPont® creation called Tedlar™ film, these bags provide a safe storage solution for gas and other samples, as they allow for very little leakage and are available in many sizes and styles to accommodate any testing needs.

Flux Chambers

While it sounds like something out of a science fiction novel, a flux chamber is simply a containment method that is laid on a flat surface for a predetermined period of time to allow for concentration of gasses to be tested.

Direct Measurement Devices

These handheld devices detect and convey information about various organic compounds found in both air and soil. While they provide immediate results, these results are not always as accurate as scientists need them to be. Low levels of contaminants can sometimes slip through these detection methods, leading to the need for more thorough probing.

Looking for bags, syringes, charcoal tubes and other gas sampling supplies? Contact 7Solutions B.V., the industry leader in gas detection technology and monitoring equipment. They will outfit your lab and staff to keep your area's soil and air quality safe and your tests going smoothly.



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