摘要
目的研究3种型号的光散射工作原理颗粒物监测仪的室内细颗粒物监测效果,并探讨其可能的影响因素。方法在同一时间和地点,分别采用A、B、C3种颗粒物监测仪对室内空气中PM2.5质量浓度进行监测,同时采用膜称重法进行监测;采样同时,对室内采样点温度和湿度进行实时同步监测;连续监测2d,每天连续监测24h。结果尽管3种仪器监测结果有很好的一致性(r值分别为0.965,0.988,0.984),但监测结果差别较大,A、B和C仪器监测的PM2.5的24h平均质量浓度分别为(43.83±16.64),(64.76±29.24)和(27.13±12.17)μg/m3,膜称重的PM2.5质量浓度为50.12μg/m3。3种仪器中,以B仪器的监测结果为最高,C仪器的监测结果最低,其中A仪器监测结果与膜称重法结果最为接近。研究未发现室内温度和相对湿度对监测结果有明显影响。结论不同型号的颗粒物监测仪监测结果可能会有差别,温度和相对湿度可能不是影响监测结果的主要因素。
Objective To compare the results of three different types of fine particulate matter laser light scattering aerosol monitors and to explore the influencing factors. Methods Three types of Aerosol Monitor A, B, and C were used to monitor the mass concentration of indoor PM2.5 at the same time and place and the membrane weighing method was used at the same time. In order to explore the possible impacts of temperature and humidity indoor on the results of monitoring, a simultaneous monitoring on the temperature and humidity indoor was conducted. The sampling continued 2 days and with 23 hours per day. Results The results of PM2.5 monitored by the three types of aerosol monitors had a good consistency （r were 0.965, 0.988, and 0.984 respectively）, but there was significant difference among them （P〈0.01）. The 24-hour average concentration of PM2.5 monitored by A, B and C monitor were （43.83±16.64）,（64.76±29.24） and （27.13±12.17） μg/m^3 and the result by the membrane weighing method was 50.12 μg/m^3. The Aerosol Monitor type B had the highest result, C had the lowest, and A had a result which was most close to the result of the membrane weighing method. There were no obvious correlations between the PM2.5 results and the temperature or humidity indoor. Conclusion The results of measurements by the three different types of aerosol monitors were different and the temperature and humidity were not the major factors that may impact the monitoring results of PM2.5.
出处
《环境与健康杂志》
CAS
CSCD
北大核心
2009年第6期504-506,F0003,共4页
Journal of Environment and Health
基金
国家科技部"十一五"支撑计划项目(2006BAI19B06)
关键词
细颗粒物
空气污染
室内
光散射
温度
湿度
Fine particulate matter
Air pollution, indoor
Light scattering
Temperature
Humidity
