EPA Method 313B

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EPA Method 313B:
THE DETERMINATION OF RESIDUAL HYDROCARBON IN SOLUTION POLYMERS BY CAPILLARY GAS CHROMATOGRAPHY

Summary:
A weighed sample of polymer is dissolved in chloroform and the cement is coagulated with an isopropyl alcohol solution containing a specific amount of alpha-methyl styrene (AMS) as the internal standard. The extract of this coagulation is then injected into a gas chromatograph and separated into individual components. quantification is achieved by the method of internal standardization.

Scope:
This method is applicable to solution polymerized polybutadiene (PBD).