Abstract
The new developed method is examined for measuring out the Dustfall to the north, east, south and west, winds. This apparatus is constituted of the round cover with a fan shape hole for catching Dustfall and wind vane, four receptacles and the cylindical receiver. And it is able to separately catch Dustfall in each receptacles by this apparatus.
The amounts of Dustfall were measured using this apparatus and dust-jar at TOYOHARA Cho in HIRATSUKA City for four months. And Iron, Manganese, Lead and Nickel in Dustfall were determined.
However, the amounts of Dustfall measured by the new apparatus showed about two times to the dust-jar, they are summarized as follows.
When the wind blew from the east, the amounts of Dustfall were shown the maximum affecting from the industrial and urban area, and minimum amounts of Dustfall were shown in blowing southerly from the seaside. Within the limits of this experiment, it was able to suppose the source of Dustfall.
