Standard Bio-Trap samplers in the simplest terms are a replacement for collecting groundwater samples using a conventional approach. Most microbes prefer to be attached to a surface rather than free floating. The Bio-Trap® provides a large surface area for the microbes to colonize and form biofilms. The results generated using this approach have been shown to minimize the variability associated with traditional sampling methods and to reflect the spatial and time dependent changes in the aquifer microbial community structure which is not always evident from groundwater analysis. Standard Bio-Trap® samplers are commonly used during site characterization and routine monitoring to:
As the name suggests, Bio-Trap® Samplers can be “baited” with various amendments or compounds to answer site-specific questions and screen remedial alternatives. For example, Bio-Traps can be baited with specific contaminants of concern, various electron donors such as HRC®, EOS®, or lactate, or with inorganic amendments like nitrate or sulfate. Bio-Traps can also be baited with 13C labeled compounds to conclusively demonstrate that biodegradation is occurring. For more information on baiting options and applications, please see Bio-Trap In Situ Microcosm.