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435 Atmospheric Sampling (1983)

(PM 2.5 Monitoring Update-1998)

5 day laboratory course
4 CEUs

Course Description
Students successfully completing this course will understand how to select sampling methods and the instruments appropriate to various sampling needs. The students will be able to calibrate and operate laboratory air sampling devices. They will learn about factors affecting sample collection efficiency. Topics discussed in lectures and investigated in the laboratories include methods of calibration, use of flow rate measuring instruments, general techniques for sampling the atmosphere, and reference methods for sampling and analyzing criteria pollutants. A scientific calculator is required for class exercises.

Major topics

LECTURE

• Generation of test atmospheres of gaseous pollutants
• Effects of variables on atmospheric sampling
• Selection of sampling train components
• Air quality surveillance networks and their siting
• Concepts and procedures for ensuring quality in atmospheric sampling

• High volume sampler and orifice calibration.
• Performance audit of reference flow device.
• Use of constant flow controllers.

• Calibration of flow devices including wet test meters, limiting orifices, rotameters, and mass flow meters.
• Preparation of dynamic calibration gas via a dilution system.

• Preparation of dynamic calibration gas via a permeation system coupled with a dilution system calibration of continuous monitors using these calibration gases.

• Internal and external leak checks, calibrate temperature sensor, pressure sensor, and flow rate system

Desired Background
Use of mathematics at the level of first year college algebra.