Air

Question 0

Air samples collected from the environment fall into one of the following four categories…..

Answer 0

1. Ambient Air sample.
2. Indoor Air sample.
3. Emissions sample – automobiles, incinerator stacks, etc.
4. Soil atmosphere – landfills, contaminated soils from spills, etc.

Question 1

Name the 4 Types of Air Quality Decisions

Answer 1

1. Determination of effects:
2. Identification of pollutants causing effects:
3. Source attribution:
4. Emissions control:

Question 2

Ninety percent of air pollutants are ______ chemicals

Answer 2

organic

Question 3

An aerosol refers to…..

Answer 3

An aerosol refers to finely divided particles of solids or liquids suspended in the atmosphere or gas.

Question 4

The following must be considered when selecting the sampling site (name 5)

Answer 4

Source of contamination.
Air flow and direction and velocity. Density of contaminants.
Intensity of sunlight.
Time of day.
Presence of obstructions such as trees and buildings. Traffic.
Site access and amenities.

Question 5

Meteorological effects to consider when sampling are?

Answer 5

Wind direction and speed.
• Temperature.
• Atmospheric stability and pressure.
• Precipitation.

Question 6

The Four Collection Methods for Air Sampling Are….

Answer 6

Absorption/Adsorption
Filtration
Whole Air Sampling
Cryogenics

Question 7

____________ is the preferred method when dealing with volatile organic compounds.

Answer 7

Cryogenics

Question 8

__________ __________ canisters can be used to collect whole samples for VOC analysis.

Answer 8

stainless steel

Question 9

___________is the technique whereby a high volume air sampler draws air through quartz or glass fibre filters.

Answer 9

filtration

Question 10

__________is the technique whereby analytes in a sample of air is adhered to a physical material.

Answer 10

Sorption