Types of Samplers that Rely on Natural Forces to Collect Samples

What are the different types of samplers that rely on natural forces to collect samples?

Choose the correct answer:

A. Active samplers

B. Passive samplers

C. Personal samplers

D. Integrated samplers

Answer:

Passive samplers rely on natural forces to collect samples, such as diffusion or natural movement.

Passive samplers are types of samplers that rely on natural forces instead of mechanical forces to collect samples. These samplers work by allowing substances or particles in the air or water to passively interact with a collecting medium, such as a sorbent material or a membrane. Examples of passive samplers include diffusion tubes, badges, or passive pumps.

Unlike active samplers that use mechanical means, such as pumps or impingers, to actively draw in air or water, passive samplers rely on the natural movement or diffusion of substances. They are often used to monitor and measure the long-term average concentrations of pollutants or substances in the environment.

Another type of sampler is integrated samplers. Integrated samplers are designed to collect samples over an extended period, usually 24 hours or more. These samplers are used to capture a representative sample of the ambient air or water quality during a specific time period.