EPA Method 313A


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EPA Method 313A:
DETERMINATION OF RESIDUAL HYDROCARBONS IN RUBBER CRUMB

Summary:
The wet crumb is placed in a sealed vial and run on a headspace sampler which heats the vial to a specified temperature for a specific time and then injects a known volume of vapor into a capillary GC. The concentration of each component in the vapor is proportional to the level of that component in the crumb sample and does not depend on water content of the crumb.

Scope:
This method determines residual toluene and styrene in stripper crumb of the of the following types of rubber: polybutadiene (PBR) and styrene/butadiene rubber (SBR), both derived from solution polymerization processes that utilize toluene as the polymerization solvent.

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Examples:  8260
TO-15

Examples:  Dioxin
Mercury
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