1. 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

2. 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

3. 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

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

5. 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

6. 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

7. 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