Air Transport and Fate Research Partnership Meeting,

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Presentation transcript:

Air Transport and Fate Research Partnership Meeting, Washington DC, USA October 10-11, 2007 Monitoring Project for Ambient Atmospheric Mercury and Other Heavy Metals in Okinawa, Japan - Progress Report - Koyo Ogasawara IDEA Consultants

Objectives of the pilot project (1) Monitor current levels of mercury and other heavy metals in air, particles, and precipitation; Obtain useful information on the long-range transportation of trace elements in Asia-Pacific region; Develop monitoring methodologies UNEP Air Transport & Fate Research Partnership Meeting, Washington DC, Octber 2007

Objectives of the pilot project (1) Contribute to the international efforts in ambient atmospheric monitoring; Develop the fate modeling methodology to understand the global cycling of mercury in atmosphere and related environment UNEP Air Transport & Fate Research Partnership Meeting, Washington DC, Octber 2007

Project Site: Cape Hedo in Okinawa Cape Hedo Atmosphere and Aerosol Monitoring Station UNEP Air Transport & Fate Research Partnership Meeting, Washington DC, Octber 2007

Measurement Items, Sampling, and Analytical methods Component Measurement items Sampling and analytical methods Atmosphere Mercury Mercury speciation (Hg(0), RGM, TPM) Continuous measurement with Tekran mercury speciation system Hg(0) 24 hours continuous sampling by gold trap amalgamation method and analysis by ICP/MS Particulate matter Pb, Cd, Cu, Zn, As, Cr, V, Ni, Hg 7 days continuous sampling by the low-volume sampler and analysis by ICP/MS Precipitation Same as particulate matters Sampling by the automatic wet-only sampler and analysis by ICP/MS UNEP Air Transport & Fate Research Partnership Meeting, Washington DC, Octber 2007

Mecury Measurement Systems Low-volume sampler Automatic wet-only sampler Tekran mercury speciation systems UNEP Air Transport & Fate Research Partnership Meeting, Washington DC, Octber 2007

Obsevations of mercury species Gaseous elemental mercury (Hg(0)) Divalent reactive gaseous mercury (RGM) Total particulate mercury (TPM) Obsevations of mercury species Hg(0) RGM TPM UNEP Air Transport & Fate Research Partnership Meeting, Washington DC, Octber 2007