煤炭中干基灰分测量不确定度的分析

Analysis on uncertainty of the testing result of dried basis ash in coal

依据国家标准GB/T 212对煤炭的灰分进行测定,并依据JJG 1059对测定结果的不确定度进行了评定和表述。根据标准的要求和以往的工作经验,分析了影响测定不确定度的原因,并对各分量进行了分析、合成。

The coal ash content is tested in accordance with the national standard GB/T 212, and the uncertainty of the testing result is evaluated and described based on JJG 1059. The reason that will affect the uncertainty of the determination is studied. The combination of each component is carried out according to relevant standards and former experience.