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Lab Methods

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Complex Emission Calculation

  • Method EPA 40 CFR
  • Repeatability variable, see method
  • Reproducibility variable, see method
  • Blending non-linear
  • Additive Correction No

In an effort to better monitor the air pollution around the United States the EPA developed this emissions calculation as part of the 1994 “Clean Air Act” (For more information and specifics you can visit CFR 40 Chapter 80). This calculation uses the parameters below to calculate the total NOX (nitrogen oxides), VOC (volatile organic compounds), and TOX (toxics). These emissions are important because they react in the troposphere to produce a harmful type of ozone that can damage lung tissue and plants. They can also lead to the creation of acid rain. The protective ozone is produced further up in the Stratosphere which blocks UV rays and protects the surface. This calculation is regulated by the EPA which hold manufacturers and importers to strict requirements on per gallon or quarterly average basis.

1. Oxygen content
2. Sulfur
3. Rvp
4. Distillation
5. Aromatics
6. Olefins
7. Benzene