大气二氧化硫采样对比试验

对大气二氧化硫连续自动采样过程中的导气管吸附，样品的放置时间，吸收液的放置时间，采样高度等方面进行了试验，结果表明，导气管的吸附是使二氧化硫的监测值较五日采样法明显偏低的主要因素，其余方面无显著影响。

Test for comparing methods in sampling atmospheric sulfur dioxide

The test result shows absorption of air pipe with automatic monitoring sampling is main reasons causing lower value than that of the five days sampling method do. They also do experiment in delay time of absorption solution before and after sampling as well as height of sampling.