摘要：为了比较不同测试仪器的测试结果的可靠性,在GRIMM1.107和RP2000在2004年12月11日￣17日持续7d的对比测试中,获得了4个有效数据,其中由于受天气现象的影响,PM_2.5的质量浓度没有明显的日变化,降水过程是PM从大气中清除的主要机制。对比结果表明,12月14日和17日的结果相差较大,其相对标准偏差分别为34.6%和23.0%,而15日和16日的对比结果较理想。

关键词：大气颗粒物；时间序列；测试对比

Abstract：The comparison test of GRIMM 1.107 with RP2000 was conducted during 11¹7 Dec, 2004 to study the reliability of results measured by the different apparatuses. Four valid were available. Maybe due to weather conditions, the concentrations of PM_2.5 do not have obvious daily variability. Moreover, precipitation is the major eliminating mechanism for PM. The comparison results show that the differences are obvious on 14 and 17 December, its relative standard difference are 34.6% and 23.0%, respectively, while the comparison in the other two days are so satisfying.

Keywords：particulate; time series; test comparison