摘要
为了分析采用空气动力学粒径谱仪实时测量畜禽养殖场空气颗粒污染物的可行性及效果,首先使用APS和MOUDI在实验室对玻璃球粉末和植物油滴进行同步测量与对比分析,然后在畜禽养殖场实时地对下风向空气颗粒污染物进行测量。结果表明:在实验室中,APS测得的2种玻璃球粉末和植物油滴的结果较准确;通过线性回归证明这2种仪器测得的玻璃球粉末和植物油滴的累积质量浓度具有一定相关性,R2都大于0.9,表明拟合度较好。在使用APS实时测量畜禽养殖场的空气颗粒污染物时,APS能够较好地反映空气颗粒污染物的变化情况,能基于其实时测量的颗粒物几何平均直径、数量浓度和质量浓度等指标从多个角度对空气颗粒污染物进行分析。
The composition of particulate matter （PM） emitted from animal feeding operations （AFOs） is complex, and those particulates have negative impact on the health of people and animal in and near the AF0s. To better understand the degree of pollution caused by those PMs, it is necessary to conduct real-time measurement, such as particle sizes and concentrations and so on. The main aim of this study is to evaluate the possibility and effectiveness of the aerodynamic particle sizer （APS） on measuring PM emitted from AFOs. An APS was firstly employed to measure the size distribution of the glass sphere powder and vegetable oil with different attributes in the laboratory. The measurement results were compared with those simultaneously measured by micro-orifice uniform deposit impactor （MOUDI）. Then particulate matter emitted from a cattle feedlot was measured by APS at real-time. The result showed that APS performed well when using it to measure two types of glass sphere powder and vegetable oil in the laboratory. According to linear regression analysis, there was correlation between the cumulative mass concentrations of glass sphere powder obtained by APS and MOUDI, as well as the vegetable oil. Both of the values of determination coefficient R2 were greater than 0. 9. APS also performed well when using it to measure the particulate emitted from the cattle feedlot since it well recorded the pollution scenarios and reflected the variation of the air pollutant. APS provided values of geometric mean diameter, number concentration and mass concentration, which can be used to evaluate pollution level of particulates emitted from animal feeding operation from different aspects.
出处
《农业机械学报》
EI
CAS
CSCD
北大核心
2015年第8期246-251,共6页
Transactions of the Chinese Society for Agricultural Machinery
基金
中国博士后科学基金面上资助项目(2013M540252)
吉林大学科研配套启动基金资助项目
