Analysis of polychlorinated dibenzofurans and polychlorinated dibenzo-/ital p/-dioxins in transformers and capacitors: Volume 2, Formation of PCDF (polychlorinated dibenzofurans) and PCDD (polychlorinated dibenzo-/ital p/-dioxins) in Askarel and contaminated mineral oil equipment: Final report

Technical Report · Tue Mar 01 04:00:00 EST 1988

OSTI ID:5077024

Cooke, W M; DeRoos, F L

A study was conducted by five independent laboratories to evaluate methods for the measurement of trace levels of polychlorinated dibenzofurans (PCDFs) and polychlorinated dibenzo-p-dioxins (PCDDs) in utility dielectric liquids. Each laboratory evaluated a different analytical method. The method evaluated by Battelle involved spiking with labelled internal standards, analyte enrichment by column chromatography/high resolution mass spectrometry (HRGC/HRMS). Baseline analyses of five dielectric fluids were conducted by each laboratory as an initial test of their methods. The variability of results between the five methods was within expectations, and the five methods were deemed suitable for round robin evaluation. The in-service liquids used in this study were found to have relatively low levels of PCDDs and trace amounts of PCDF. Liquids from transformers with more than 25 years of service had higher PCDF levels than liquids from newer transformers. Liquids from utility appliances exposed to thermal and electrical stresses did not have elevated PCDD or PCDF levels. PCDF levels increased as the Aroclor number (and relative amount of chlorination) increased. 1 fig., 22 tabs.

• Research Organization: Electric Power Research Inst., Palo Alto, CA (USA)
• OSTI ID: 5077024
• Report Number(s): EPRI-EL/EA-5443-Vol.2; ON: TI88920261
• Country of Publication: United States
• Language: English

Related Subjects

200300* -- Electric Power Engineering-- Power Transmission & Distribution-- (-1989)
24 POWER TRANSMISSION AND DISTRIBUTION
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102 -- Chemical & Spectral Procedures
400201 -- Chemical & Physicochemical Properties
42 ENGINEERING
420800 -- Engineering-- Electronic Circuits & Devices-- (-1989)
BENZOFURANS
CAPACITORS
CARBON 13
CARBON ISOTOPES
CHEMICAL ANALYSIS
CHEMICAL REACTIONS
CHROMATOGRAPHY
COMBUSTION
DECOMPOSITION
DIOXIN
DOCUMENT TYPES
ELECTRICAL EQUIPMENT
EQUIPMENT
EVEN-ODD NUCLEI
FLUIDS
FURANS
GAS CHROMATOGRAPHY
HETEROCYCLIC COMPOUNDS
INSULATING OILS
ISOTOPES
LIGHT NUCLEI
LIQUIDS
MASS SPECTRA
NUCLEI
OILS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXIDATION
PROGRESS REPORT
PYROLYSIS
SEPARATION PROCESSES
SPECTRA
STABLE ISOTOPES
THERMOCHEMICAL PROCESSES
TRANSFORMERS