Comparative analysis of dioxins and furans in ambient air by high-resolution and electron-capture mass spectrometry

Technical Report · Wed Jan 01 00:00:00 EST 1992

OSTI ID:7264138

Koester, C J; Harless, R L; Hites, R A

Known mixtures and unknown atmospheric sample extracts containing polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans (PCDD/F) were analyzed by both electron impact, high resolution, mass spectrometry (HRMS) and by electron capture, negative ion, low resolution mass spectrometry (ECNI). PCDD/F concentrations measured by the two methods were comparable, typically agreeing with + or - 33%. The major difference between the two techniques is that HRMS easily detects 2,3,7,8- tetrachlorodibenzo-p-dioxin but ECNI does not. Results suggest that ECNI can be a sensitive low cost alternative to HRMS for the determination of PCDD/F concentrations.

• Research Organization: Indiana Univ., Bloomington, IN (United States)
• OSTI ID: 7264138
• Report Number(s): PB-92-206440/XAB; CNN: EPA-R-812588
• Resource Relation: Other Information: Pub. in Chemosphere, v24 n4 p421-426 1992. Sponsored by Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Research and Exposure Assessment Lab
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
DIOXIN
MASS SPECTROSCOPY
FURANS
ACCURACY
AIR POLLUTION
COMPARATIVE EVALUATIONS
ELECTRON CAPTURE
RESOLUTION
TOXIC MATERIALS
CAPTURE
EVALUATION
HAZARDOUS MATERIALS
HETEROCYCLIC COMPOUNDS
MATERIALS
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
POLLUTION
SPECTROSCOPY
540120* - Environment
Atmospheric- Chemicals Monitoring & Transport- (1990-)