Distinguish breathing-zone sampling from general-area sampling.

Distinguish breathing-zone sampling from general-area sampling.

• A. Breathing-zone sampling measures ambient conditions; area sampling targets the worker's inhalation zone
• B. Breathing-zone sampling targets the worker’s inhalation zone; area sampling measures ambient conditions
• C. They are the same
• D. Breathing-zone sampling measures only body exposures

Answer: (B)

Breathing-zone sampling measures the air the worker actually inhales, while general-area sampling measures ambient conditions in the room. Breathing-zone sampling is typically done with a personal sampler worn by the worker, positioned near the nose and mouth (the inhalation zone), so it captures the concentration the worker is exposed to as they move and work. General-area sampling uses stationary monitors placed in the workspace to describe the overall environmental air quality and ventilation performance, but these measurements may not reflect what a specific worker breathes because concentrations can vary with proximity to sources, air currents, and the worker’s own movements. In short, breathing-zone targets the worker’s inhalation zone; area sampling measures ambient conditions.

Breathing-zone sampling measures the air the worker actually inhales, while general-area sampling measures ambient conditions in the room. Breathing-zone sampling is typically done with a personal sampler worn by the worker, positioned near the nose and mouth (the inhalation zone), so it captures the concentration the worker is exposed to as they move and work. General-area sampling uses stationary monitors placed in the workspace to describe the overall environmental air quality and ventilation performance, but these measurements may not reflect what a specific worker breathes because concentrations can vary with proximity to sources, air currents, and the worker’s own movements. In short, breathing-zone targets the worker’s inhalation zone; area sampling measures ambient conditions.