scope:

OBJECTIVES: The specific objectives of this test were to:

Primary objectives

• Compare PM2.5 mass measured using an in-stack filter and iced impinge train (EPA Method 201A/202) and PM2.5 mass measured using a dilution tunnel;

• Develop emission factors and speciation profiles for organic aerosols and PM2.5 mass;

• Characterize sulfate (SO₄⁼), nitrate (NO₃^-), ammonium (NH₄⁺), chloride (Cl^-) elemental carbon (EC) and organic carbon (OC) in particulate matter collected on filter media after stack gas dilution;

• Characterize semivolatile organic compounds (SVOC) in stack gas samples after dilution;

• Characterize key gaseous secondary particle precursors in stack gas samples: volatile organic compounds (VOC) with carbon number of 7 and above; sulfur dioxide (SO₂); sulfur trioxide (SO₃); ammonia (NH₃); and oxides of nitrogen (NOX);

• Document the relevant process design characteristics and operating conditions during the test.

Secondary Objectives

• Characterize ions (SO₄⁼, NO₃^-, NH₄⁺ and Cl^-), OC, and EC in particulate collected on filter media in stack gas sampling trains;

• Characterize the size distribution of solid and condensible particles at stack conditions.