Lab Metage results of the soot collected by the filtering cartridge made of fibre glass is effected by the circumstance humidity,cooling time,dying time and etc and then show as positive error.

• 在烟尘监测中,采用玻璃纤维滤筒收集烟尘,实验室进行滤筒称量时,受实验室环境湿度、冷却时间、烘干时间等因素的影响,对监测结果有显著的影响,且呈现正误差。