Development of a Portable Volatile Organic Compounds Concentration Measurement System Using a CCS811 Air Quality Sensor

Volatile organic compounds or VOCs can be derived from many sources, like cooking, smoking, biomass burning, and motor vehicle emission. VOCs are a type of gas known to have a significant relationship with human health and air quality. It is necessary to have a monitoring system to determine VOC concentration in the surrounding environment. This study aims to develop a portable concentration measurement system for volatile organic compounds for different emission sources. The designed system was tested under different emission sources: cigarette smoke, mosquito coil, spray paint, and filtered ambient air. All measurements were carried out for ten minutes with a minute of the interval time for each sampling period. The measurement results show that the system has good responsibility and sensitivity to the VOC concentration. The range of VOC concentrations that can be detected by the system is from 0 ppm to 32 ppm. The system has a resolution of 0.001 ppm, with an accuracy of ±2 ppm.