Atomic Absorption Spectrophotometry (AAS) is a highly sensitive method used to detect and quantify metals in liquid samples. The system works by measuring the absorption of light at specific wavelengths corresponding to the metals being analyzed, making it ideal for detecting trace elements such as lead, mercury, and arsenic. AAS systems are essential in environmental monitoring, food safety, and clinical diagnostics to ensure compliance with health and safety standards. This technology is also widely used in water quality analysis, where it plays a critical role in ensuring safe drinking water.