What is the determination of PCBs in transformer oil?

The determination of PCBs in transformer oil involves analytical techniques such as gas chromatography-mass spectrometry (GC-MS) or high-performance liquid chromatography (HPLC). These methods enable the identification and quantification of polychlorinated biphenyls (PCBs) present in the oil. Accurate determination is crucial for assessing environmental impact and ensuring compliance with regulations, as PCBs are hazardous substances that can pose significant health and ecological risks.