Contaminant analysis is the process of identifying and measuring harmful substances in various environments, such as air, water, and soil. This analysis helps determine the presence and concentration of pollutants, which can include chemicals, heavy metals, and biological agents. By understanding these contaminants, scientists and regulators can assess risks to human health and the environment. The methods used in contaminant analysis vary, including laboratory testing and field sampling. Techniques like gas chromatography and mass spectrometry are commonly employed to detect and quantify contaminants. This information is crucial for developing strategies to mitigate pollution and ensure safety in affected areas.