Levels of polychlorinated biphenyls (PCBs) in transformer oils from Korea

Catalytic dechlorination of polychlorinated biphenyls in subcritical water by Ni/Fe nanoparticles

“…As can be seen, the oil reveals more than 30 peaks, most of which are tri-and tetrachlorinated biphenyl with different positional chlorinated chlorine atoms, and the other peaks correspond with mon-, di-and pentachlorinated biphenyls. The similar profile of PCB congeners in raw capacitor oil and in Aroclor 1242 allows us to use Aroclor 1242 to quantify the total PCBs in capacitor oil according to previous reports [19,20] and EPA method 8270 with satisfying purpose. Eight major and well-resolved PCBs peaks both found in Aroclor 1242 standard mixture and capacitor oil are selected for the quantification, as suggested by Yak et al [21].…”

Local Sources of Polychlorinated Biphenyls (PCB) in Russian and Norwegian Settlements on Spitsbergen Island, Norway

“…PCB have been added to a wide range of applications, including hydraulic oils, electrical transformers and capacitors, double-glazed windows, masonry coatings, sealants, and paint (Sundahl et al, 1999;Poland et al, 2001;Andersson et al, 2004;Herrick et al, 2004;Shin & Kim, 2006). The addition of PCB to hydraulic oils as a flameretardant agent was especially essential for the coal mining industry during the decades preceding the national PCB ban in the 1980s.…”

Advantage of solvothermal procedure for polychlorinated biphenyls removal from e-waste contaminated site

“…1). A comparison of the chromatograms of the soil sample and standard samples Aroclor 1242 and 1260 showed that these PCBs were identical as a mixture of Aroclor 1242 and 1260, which allowed us to use Aroclor 1242 and 1260 as standards to quantify PCBs in the soil based on EPA method 8082 [29] and previous literatures [30,31].…”