風向別試料捕集による大気汚染物質の調査研究 (2) 浮遊粉じん

抄録

The developed sampler is examined for measuring out suspended dust to the north, east, south and west winds in measuring period. This sampler is constituted of the four usual samplers, a wind-vane and switch auto-changer replying to the each wind direction. And it is able to separately catch suspended dust on the each filter for the different wind blowing by the developed sampler.
The suspended dust concentrations were five times measure using the developed sampler and the usual sampler at Toyohara Cho in Hiratsuka City for about fourty days from August to September in 1979. And Iron, Lead, Manganese, Vanadium, Titanium, Chromium and Nickel in the caught suspended dust were determined by the Fluorescent X-Ray Spectrometry method.
The concentrations of suspended dust and each metallic element measured by the developed sampler were compared with the value obtained by the usual sampler showed good agreement. When the wind blew from the east or north at the sampling site, the concentrations of air pollutants were shown the maximum affecting the industrial and urban area. On the other hand, the low level concentrations were shown in blowing southerly or westerly from the seaside and the rural country.
Within the results of this study, it was able to suppose the source of suspended dust and each metallic element by the developed sampler and this sampler was very useful.