今年1月,我国颁发了《生产性粉尘作业危害程度分级》和《作业场所空气中粉尘测定方法》两项标准。为了贯彻这些标准,搞好粉尘治理与监测工作,急需 研制提供一批便携式快速粉尘测定仪器。 粉尘的测量方法有两大类,均以计重浓度(毫克/米3)米表示。一类是用粉尘采样器,称为滤膜采 In January this year, China issued two standards, “Hazard Classification for Productive Dust Operations” and “Methods for Determining Dust in the Air at Workplaces”. In order to implement these standards and do a good job in dust control and monitoring, it is urgent to develop and provide a batch of portable rapid dust measuring instruments. There are two main types of dust measurement methods, both in weight concentration (mg / m3) meters. One is the use of dust sampler, known as the membrane mining