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5 EXTRACTION METHODS

5.8 SORBENT EXTRACTION


Use: Simple and inexpensive technique for extracting contaminants from water and/or gas samples. It is being widely used where preconcentration of samples is required.

Description:

Sorbent extraction involves the contact of air or water through a material, such as granular activated carbon, polyurethane, or resins, which trap organic compounds by sorption or filtration. Resin cartridges can be used for concentration of VOCs obtained from purge and trap.

Analytes:

1. Halogenated SVOCs 5. PAHs 8. Radionuclides
2. Non-Halogenated SVOCs 6. Pesticides/Herbicides 10. Explosives
4. Halogenated SVOCs 7. Metals

Media:

Soil: Ground Water: Surface Water: Gas/Air:
Not Applicable MINIMUM MINIMUME MINIMUM
Maximum Depth: Not Applicable.
Production Rate: Sample is available quickly.
Investigation Derived Waste Volume: Small volume of waste.
Technology Status: Commercially available technology with moderate field experience.
Certification/Verification: Technology has not participated in CalEPA certification and/or CSCT verification program.
Relative Cost per Sample: Least expensive.

Limitations:

EPA Methods:

5041A Analysis for Desorption of Sorbent Cartridges from Volatile Organic Sampling Train (VOST).
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