Transformer oils as a potential source of environmental exposure to polychlorinated biphenyls (PCBs): an assessment in three central provinces of Iran

Dobaradaran, Sina and Saeedi, Reza and Koolivand, Ali and Khaloo, Shokooh Sadat and Jorfi, Sahand and Abtahi, Mehrnoosh (2017) Transformer oils as a potential source of environmental exposure to polychlorinated biphenyls (PCBs): an assessment in three central provinces of Iran. Environmental Science and Pollution Research, 24 (23). pp. 19098-19103.

Full text not available from this repository.
Official URL: https://www.ncbi.nlm.nih.gov/pubmed/28660512

Abstract

Polychlorinated biphenyl (PCB) contamination of oils from all transformers of the national electrical grid in Tehran, Qom, and Alborz, three central provinces of Iran, was assessed. The concentration of PCBs in transformer oils was determined by gas chromatography. At the national level, the proportions of transformers with oil PCB contents of <5, 5–49, 50–499, 500–4999, and >5000 ppm were determined to be 85.7, 12.4, 1.6, 0.1, and 0.1%, respectively. About 0.5% of transformer oils (66,000 kg out of 13,342,000 kg) exhibited PCB levels higher than 50 ppm that based on the Stockholm Convention should be phased out before 2025. The contaminated oils contained 91.4% of detected PCBs (132 kg PCBs out of 144 kg PCBs) and were located in 1.9% of transformers (27 transformers out of 1449 transformers). Statistical analysis indicated that the year of manufacture and manufacturing company provided significant effects on PCB contamination (p value <0.001). PCB contamination of transformer oils in Tehran was higher than that of the other provinces that could be mainly caused by the older average year of manufacture. PCB levels higher than 499 ppm were also observed only in Tehran. This study provided valuable information for future studies on identification of PCB-contaminated transformers as well as planning and design of waste management facilities for PCB-contaminated oils at the national level.

Item Type: Article
Subjects: WA Public Health
Divisions: Faculty of Public Health
Depositing User: محسن زارعی
Date Deposited: 31 Dec 2018 08:51
Last Modified: 31 Dec 2018 08:51
URI: http://eprints.bpums.ac.ir/id/eprint/7360

Actions (login required)

View Item View Item