Indoor air quality (IAQ) has a significant impact on human health and well-being. Poor IAQ can lead to respiratory problems, headaches, and fatigue. Therefore, it is essential to monitor and improve IAQ in homes, offices, and other indoor environments. Gas sensors are an effective tool for IAQ monitoring and improvement. This article will discuss the latest research on IAQ monitoring and improvement with gas sensors.

Gas sensors are devices that detect the presence of specific gases in the air. They work by measuring the concentration of the target gas in the air and converting it into an electrical signal. Gas sensors can detect a wide range of gases, including volatile organic compounds (VOCs), carbon monoxide (CO), nitrogen dioxide (NO2), and ozone (O3), which are common indoor air pollutants.

One of the most promising gas sensors for IAQ monitoring is the metal oxide gas sensor. Metal oxide gas sensors are composed of a metal oxide layer deposited on a substrate. When the target gas interacts with the metal oxide layer, it causes a change in the electrical conductivity of the sensor, which can be measured and used to determine the concentration of the gas in the air. Several studies have reported the use of metal oxide gas sensors for IAQ monitoring. For example,

Another promising gas sensor for IAQ monitoring is the electrochemical gas sensor. Electrochemical gas sensors work by measuring the current generated by a chemical reaction between the target gas and an electrode. Electrochemical gas sensors are highly sensitive and selective, making them ideal for IAQ monitoring.

Apart from gas sensors, several other technologies are used for IAQ monitoring and improvement. For example, air purifiers and ventilation systems can help remove indoor air pollutants and improve IAQ. However, gas sensors are essential for identifying the specific indoor air pollutants that need to be removed or reduced.

In addition to IAQ monitoring, gas sensors can also be used for IAQ improvement. For example, gas sensors can be used to control ventilation systems to ensure that indoor air pollutants are removed efficiently. Gas sensors can also be used to monitor the effectiveness of air purifiers and other IAQ improvement technologies.

In conclusion, gas sensors are a valuable tool for IAQ monitoring and improvement. Metal oxide gas sensors and electrochemical gas sensors are highly sensitive and selective, making them ideal for IAQ monitoring. Furthermore, gas sensors can be used to control ventilation systems and monitor the effectiveness of air purifiers and other IAQ improvement technologies. Future research should focus on developing gas sensors that can detect a wider range of indoor air pollutants with higher sensitivity and selectivity, which will be critical for improving IAQ and protecting human health.