List common indoor air quality problems and practical controls in offices/labs.

List common indoor air quality problems and practical controls in offices/labs.

• A. Poor ventilation, moisture/mold, off-gassing from materials; controls include increasing ventilation, improving filtration, humidity control, source elimination, and housekeeping.
• B. High noise levels and employee laziness; controls include playing music.
• C. Food odors only; controls include opening windows.
• D. Light flicker and color temperature; controls include changing light bulbs.

Answer: (A)

Indoor air quality problems in offices and labs come from airflow, moisture, and emissions from materials. The best answer identifies the main issues—poor ventilation, moisture or mold growth, and off-gassing from building materials and products—and pairs them with practical controls that both reduce contaminants and prevent them from occurring. Increasing ventilation dilutes indoor contaminants by bringing in outdoor air. Improving filtration captures more particles from the air before they’re inhaled. Humidity control prevents mold growth and dust-related issues by keeping relative humidity in a healthy range. Source elimination or substitution reduces emissions at their origin, and good housekeeping minimizes accumulation of dust, residues, and mold-friendly environments. Together, these controls address both the sources of pollutants and the ways they spread. The other choices miss essential IAQ concerns or rely on ineffective or irrelevant measures—noise or “laziness” does not fix air quality, food odors alone are an incomplete and variable issue, and lighting problems are separate from air quality.

Indoor air quality problems in offices and labs come from airflow, moisture, and emissions from materials. The best answer identifies the main issues—poor ventilation, moisture or mold growth, and off-gassing from building materials and products—and pairs them with practical controls that both reduce contaminants and prevent them from occurring.

Increasing ventilation dilutes indoor contaminants by bringing in outdoor air. Improving filtration captures more particles from the air before they’re inhaled. Humidity control prevents mold growth and dust-related issues by keeping relative humidity in a healthy range. Source elimination or substitution reduces emissions at their origin, and good housekeeping minimizes accumulation of dust, residues, and mold-friendly environments. Together, these controls address both the sources of pollutants and the ways they spread.

The other choices miss essential IAQ concerns or rely on ineffective or irrelevant measures—noise or “laziness” does not fix air quality, food odors alone are an incomplete and variable issue, and lighting problems are separate from air quality.