EPA Method 9078

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EPA Method 9078:
SCREENING TEST METHOD FOR POLYCHLORINATED BIPHENYLS IN SOIL

Summary:
A sample of the soil to be tested is extracted with a hydrocarbon based solvent. The resulting extract is filtered to remove moisture and inorganic salts. The dried extract is reacted with metallic sodium and a catalyst to strip chloride from any PCB that may be present. The resulting chloride ions are extracted into an aqueous buffer solution where they are detected using a chloride ion specific electrode.

Scope:
The method may be used to determine the amount of PCB (polychlorinated biphenyl) contamination in soils such as sand, gravel, loam, sediment, and clay, assuming that PCBs are the sole source of organic halogens in the sample.

Report Number:
SW-846 Ch 4.5