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A CUBIC METER

Introduction to Air Quality ATCEM November 6, 2012 Pat Ellsworth Institute for Tribal Environmental Professionals. A CUBIC METER. Step-by-Step Calculation of PM 10 Concentration. 1. Calculate particulate weight (in grams) as follows:

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A CUBIC METER

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  1. Introduction to Air QualityATCEMNovember 6, 2012Pat EllsworthInstitute for Tribal Environmental Professionals

  2. A CUBIC METER

  3. Step-by-Step Calculation of PM10 Concentration 1. Calculate particulate weight (in grams) as follows: final weight of dry filter - initial weight of dry filter = particulate weight __________ grams - __________ grams = __________ grams 2. Calculate total time sampler was running (in minutes):  __________ hours run x 60 minutes = __________ minutes 1 hour 3. Calculate average flow rate for the sampling period: initial flow meter rate + final flow meter rate = __________liters/min 2 4. Calculate volume of air sampled (in liters):   average flow rate x time = volume sampled _______ liters x _______ minutes = __________ liters 1 minute

  4. Step-by-Step Calculation of PM10 Concentration (continued)5. Convert particulate weight from grams to micrograms: __________ grams x 1 x 106 µg = ___________ µg 1 1 gram 6. Convert volume of air sampled from liters to cubic meters: __________ liters x 1 m3 = ___________ m3 1 1 x 103 liters 7. Divide particulate weight (µg) by volume of air sampled (m3). Report average particulate concentration as: __________ µg/m3

  5. National Ambient Air Quality Standards

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