What is the analysis of PCBs in transformer oils?

The analysis of PCBs in transformer oils is crucial for assessing environmental and health risks associated with electrical equipment. Polychlorinated biphenyls (PCBs) can be present in older transformer oils due to historical use. Analytical methods such as gas chromatography-mass spectrometry (GC-MS) are employed to detect and quantify PCB concentrations. Regular monitoring ensures compliance with regulations and helps in the safe disposal or remediation of contaminated transformer oils.