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为了解大气颗粒物的粒度分布,1985年2月对博山城区的大气飘尘进行了调查。 在城区10km~2的范围内,选定火车站、百货大楼和卫校操场三个点,用低流量飘尘采样法连采四天,每天8～9点和15～16点进行采样。采样高度1.5米,同测气象条件。 用《滤膜法》测定分散度代表飘尘的粒度分布。每张玻片按顺序测300～500个粒子,以测微计刻度<1.4μm、2.8μm、4.2μm、5.6μm、7.0μm、8.4μm和>10μm
In order to understand the particle size distribution of atmospheric particles, airborne dustfall was investigated in Boshan in February 1985. In the urban area of 10km ~ 2, three points of train station, department store and health school playground are selected. Continuous sampling is carried out for four days with low-flow fly-dust sampling method, sampling is carried out every day from 8 to 9 and from 15 to 16. Sampling height of 1.5 meters, the same measurement meteorological conditions. The “filter method” to determine the degree of dispersion represents the particle size distribution of fly ash. Each slide was measured 300 ~ 500 particles in order to measure micrometer scale <1.4μm, 2.8μm, 4.2μm, 5.6μm, 7.0μm, 8.4μm and> 10μm