Abstract
In this study, six typical construction sites in Hengyang City were selected to monitor the dust emission concentration in earthwork stage, main structure stage and decoration stage. The average monitoring time of each stage is 2 or 3 days, totally 15 days. 45 samples of quartz filter were obtained. The initial emission factors and emission inventory of building dust were estimated based on FDM model. The results show that the average net concentration of earthwork stage, Main structure stage and decoration stage are 162 ug/m3, 72 ug/m3 and 54 ug/m3 respectively. PM10 emission factor is the largest in the stage of earthwork foundation, followed by the stage of main structure, and the lowest in the stage of decoration. The actual emission factors are 0.449, 0.177 and 0.149 g/(m2.h).
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