雨天硫酸盐化速率样品扩散分析

Extending Analysis on the Sample of Sulphuricacid Salinizate Rate in Rain

选择采样期不同降雨天数的碱片，测定余边的硫酸盐化速率含量，其结果为：采样期全月无雨时，余边上的硫酸盐均未检出；半月以上至全月有雨时检出率为１００％，检出量占样品量的２．７０％～１５．９５％。经扩散试验，查清了余边上的硫酸盐主要是有效面积上采集的样品的扩散，并提出了相应的修正方法。

By selecting alkali paper in different sample days in rain,the content of sulphuricacid salinizate rate in the residual paper was determined.The result showed that all sulfates couldnot be determined in the residual paper while there was not any rainwater during the whole month of sample period.The detection rate was 100% while there was rainwater from half to whole month,and the detection quatity is 2.70%-15.95% of whole sample quitity.By extending experiment,it is cleared that sulfate in the residual paper was majority extended from collected sample in effective area,and a correlation method to correct was put.