I'm hoping to build off previous posts about volatile organic compound (VOC) sensors (here about the CCS811 sensor, and here about PID sensors), and synthesize information on low-cost VOC sensors for the current research area review on outdoor air quality.
What are people's experiences using low-cost VOC sensors outdoors?
A couple of air quality researchers I've talked to say that currently available low-cost metal oxide (MOX) and photoionization detector (PID) sensors don't produce accurate data.
A few related questions:
- What can cause these VOC sensors to produce inaccurate data?
- What can/do people use these low-cost VOC sensors for? E.g., initial investigations into relative total VOCs, etc.
- What's needed to improve the accuracy of low-cost VOC sensor data? E.g., hardware improvements, calibrations/corrections, etc.?
Thanks for any insights folx can share!