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PCB contamination due to waste is still an issue in spite of the fact their production was banned several years ago. Their contamination in the environment, mainly related to inadvertently generated PCB, needs to be monitored, especially for the dioxin-like PCB (DL-PCB) regulated under the Stockholm Convention for POPs since 2001. EPA Method 1668 and following revisions, is applied for the determination of PCBs in wastewater, surface waters, soil, sediments, biosolids, and tissue matrices using gas chromatography coupled to high-resolution gas chromatography/high-resolution mass spectrometry (HRGC/HRMS). However, recent advances in gas chromatography-triple quadrupole mass spectrometry allow for high sensitivity and selectivity, leading to the consideration of GC-MS/MS as a reliable tool for PCBs analysis.
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