Rob Price

Question 1

Define dust

Answer 1

Solid particles formed by mechanical disintegration of a material

Question 2

Define smoke

Answer 2

A visible aerosol resulting from incomplete combustion

Question 3

Define fog/mist

Answer 3

Liquid particles formed by condensation or atomisation

Question 4

Aerodynamic properties depend on what 3 things

Answer 4

Size
Shape
Density

Question 5

Aerodynamic behaviour is controlled by what?

Answer 5

The interaction with surrounding molecules and gravity

Question 6

Give 3 examples shapes/sizes of aerosols

Answer 6

Spherical
Fibrous
Aggregates

Question 7

If you have an aerosol to target the respiratory tract directly eg bronchioles, what particle size do you need?

Answer 7

5um

Question 8

If you want to target to alveoli to get to the systemic system via the respiratory tract, what particle size do you need?

Answer 8

2um

Question 9

What is an aerosol

Answer 9

A relatively stable suspension of solid or liquid particles in a gaseous medium (0.001um-100um)

Question 10

What is inertial impaction due to

Answer 10

Inertial force of a particle in an airstream

Question 11

Which is less efficient:
Inertial impaction
Gravitational sedimentation

Answer 11

Gravitational sedimentation

Question 12

Name three forms of inhaler device

Answer 12

pMDI
DPI
Nebuliser

Question 13

Name two types of nebuliser

Answer 13

Pneumatic

Ultrasonic