Pollutant detection refers to the methods and technologies used to identify harmful substances in the environment, such as air, water, and soil. This process is essential for monitoring environmental health and ensuring compliance with regulations. Common pollutants include carbon monoxide, lead, and pesticides, which can have serious effects on human health and ecosystems. Various techniques are employed for pollutant detection, including chemical sensors, spectroscopy, and biological assays. These tools help scientists and environmental agencies assess pollution levels and take necessary actions to mitigate risks. Accurate detection is crucial for protecting public health and preserving natural resources.