Gas Chromatograph – Electron Capture Detector (GC/ECD) The ECD or electron capture detector measures electron-absorbing components (usually halogenated) by creating an electrical field in which molecules exiting the GC column can be detected by the drop in current in the field. The ECD uses a radioactive beta particle (electron) emitter in conjunction with a makeup gas flowing through the detector chamber.
Gas Chromatograph – Mass Spectrometer (GC/MS)Gas chromatography–mass spectrometry (GC-MS) is a method that combines two techniques to form a single method of analyzing samples. Gas-chromatography separates the elements of a sample and the mass-spectrometry characterizes each element making it possible to qualitatively and quantitatively analyze samples. The GC-MS is a system tailored to meet the rigorous demands for scientist in both routine analysis and research.
The laboratory analyzes pesticides, herbicides, haloacetic acids, PCBs, semi-volatile organic compounds in drinking water by various EPA. Pesticides, PCBs and semi-volatiles in wastewater, soil, hazardous waste, sediments, and sludge are analyzed by EPA method 8270 in support of State and federal environmental regulations.
Local Health Departments
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