Used in environmental and water quality testing to detect and quantify disinfection byproducts formed during chlorination of drinking water. Commonly applied in gas chromatography-mass spectrometry (GC-MS) analysis to ensure compliance with regulatory standards for trihalomethanes (THMs), which are potential carcinogens. Helps laboratories calibrate instruments and validate methods for accurate measurement of halogenated contaminants in water samples. Also utilized in research studies assessing the health risks associated with long-term exposure to disinfection byproducts.