大气降尘测定中蒸发方式的选择

为了加快大气降尘样品的蒸发速度和报出数据的及时,经过分析总结,得出蒸发样品的步骤为:先电热套蒸发再水浴蒸发最后用电热板蒸发,这样既可以节省时间,又可以节约能耗,避免样品在空气中放置时间过长,空气中的尘粒进入样品中,影响样品测定的结果。

Selection of Evaporation Mode in Measurement of Atmospheric Dust Fall

In order to accelerate the evaporation rate of atmospheric dust samples and timely report the data,after analysis and summary,it is concluded that the steps of evaporation of samples are as follows:the samples is first evaporated by electric heating jacket,then by water bath,and finally by electric heating plate,this process can not only save time,but also save energy,at the same time,it can prevent the sample from being placed in the air for a long time and the dust particles in the air entering the sample,which will affect the results of sample determination.