DS EN 12766-1:2000 Petroleum Products And Used Oils - Determination Of Pcbs And Related Products - Part 1: Separation And Determination Of Selected Pcb Congeners By Gas Chromatography (Gc) Using An Electron Capture Detector (Ecd) Describes a method to determine the concentration of up to 12 individual or defined unresolved small groups of polychlorinated biphenyl (PCB) congeners in petroleum products and related materials by m