A healthcare building reports a single total-VOC reading. What additional information is important before interpreting potential health effects?
- AOnly whether the reading is below an assumed universal 100 mg/m³ limit.
- The individual compounds, their concentrations and the exposure circumstances.
- COnly the color of the sampling instrument.
- DOnly the number of supply diffusers.
Where to look it up
https://www.epa.gov/indoor-air-quality-iaq/volatile-organic-compounds-impact-indoor-air-quality
Why B is correct
EPA describes VOC health effects as varying with chemical identity and exposure. A total alone cannot establish safety using an invented universal hospital threshold.