Determination of chlorinated dibenzo-p-dioxins and chlorinated dibenzofurans in ambient air : proceedings of a workshop, September 17, 1989, Toronto, Ontario, Canada

Abstract

Much attention is presently focused on ambient PCDDs/PCDFs measurements in the vicinity of municipal solid waste incinerators. Typically a two-staged approach is employed consisting of ambient monitoring on both a pre-operational or background basis followed by a post-operational phase. Sample collection and analyses procedures most often consist of high volume sorbent samplers in concert with high-resolution gas-chromatography/high resolution or magnetic sector mass spectrometry (HRGC/HRMS). While much has been written in the open literature on the subject of measurement methodology, little has been written about other critical factors in program and monitoring network design. Critical factors or components in the design of state-of-the-art ambient monitoring networks for PCDDs/PCDFs in the vicinity of municipal solid waste incinerators are reviewed. Particular attention is focused on, but not limited to the following: monitoring network design, sampler placement criteria, siting criteria (both site specific and regional specific), meteorological parameters (wind speed, direction, temperature, baromeuic pressure, atmospheric stability class), sampling schedule, (frequency and duration), seasonal considerations, ambient background (What is it and how do we reliably establish it?) and quality assurance/quality control considerations. 'Pio.xjfi^'i in AtJibieni ,'?/? '..Oi o:\jns in Jlmbieni .^.ir Volume m Air and Surface Water Releases, EPA 530/SW-87-001, July 1987. 2. U.S. EPA, September 1984. Network Design and Site Exposure Criteria for Selected Non Criteria Air Pollutants. EPA 450/4-84-022. Office of Air Quality Planning and Standards. Research Triangle Park, NC 27711. 3.