乌鲁木齐市土壤中氡浓度水平及分布规律调查

INVESTIGATION ON SOIL RADON CONCENTRATION LEVELS AND DISTRIBUTION IN URUMCHI

为摸清乌鲁木齐市土壤中氡浓度水平及分布规律,采用网格布点、GPS定位、RAD7电子测氡仪,于2008年6～9月期间对乌鲁木齐市土壤氡浓度进行了调查。结果表明,在所测量的市区内100个点位中,土壤中氡浓度范围为45～41164Bq/m3,平均值为3288Bq/m3;氡浓度呈现南部高、北部低的变化趋势;不同类型土壤中氡浓度有所不同,浓度由高到低依次为:黄土(沙土)>砂土>泥土>砂石地。

To find out and verify the soil radon concentration levels and distribution in Urumchi, during June to September, 2008, a survey of spatial distribution of radon concentration in soil was carried out in accordance with grid methods, GPS positioning and RAD7 electronic radon monitor. The results indicated, among one hundred sampling sites, the data set spanned from 45 Bq/m^3 to 41164 Bq/m^3, the average was 3288 Bq/m^3; the soil radon concentration declined from the south to the north, and varied with different types of soil; different types of radon concentration in soil is different from high to low concentration as follows： yellow soil 〉 sand〉 clay〉 gravel.