Theoretical and field evaluation of a PM2.5 high-volume impactor inlet design
Theoretical and field evaluation of a PM2.5 high-volume impactor inlet design
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PM2.5 大容量冲击器入口设计的理论和现场评估
DOI：
10.1016/j.atmosenv.2020.117811
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发表时间：
2021
影响因子：
5
通讯作者：
Okuda Tomoaki
中科院分区：
文献类型：
--
作者：
Patel Prashant;Aggarwal Shankar G.;Tsai Chuen-Jinn;Okuda Tomoaki
研制了一种PM2.5大体积撞击式采样器，采样流量为1130 L/min（1.13 m3/min），采样器中使用的过滤器尺寸为8英寸× 10英寸。与其他小容量采样器（流速16.67 lpm）相比，该采样器的主要优点是质量测量的不确定性较低，PM2.5质量收集量较高，采样时间较短。为了研制PM2.5HVI采样器，进行了一系列的模拟和实验研究。在真实的环境条件下（即多分散的环境颗粒），经过参数调整后，通过实验获得了2.52 μm的最佳D50截止尺寸。对商用PM2.5HV采样器的截留粒径进行了实验评价，结果与自行研制的PM2.5HVI采样器的D50截留粒径吻合较好。现场性能的研究开发的PM2.5 HVI采样器也进行了高和低颗粒物质量负荷条件下沿着与商业PM2.5高，低容量采样器。在测试条件下，所研制的PM2.5HVI采样器与市售PM2.5HVS、BAM和BEC参考采样器的质量测量结果一致，平均偏差分别为12.7、18.5和11.7 μg/m3（即5.05%、4.86%和3.70%）。这款PM2.5HVI采样器非常有用，尤其是在需要对过滤器样本/大量颗粒物进行广泛的离线化学分析的情况下，用于源解析研究或生物测定分析或毒理学目的（体外/体内研究），昼夜研究，以及颗粒物质量浓度非常低的空气采样，例如海洋，极地地区，大部分农村地区等。
A PM2.5high-volume impactor (HVI) sampler is developed, which has a flow rate of 1130 L per minute (lpm) (1.13 m3/min) and in it, the filter size used is of 8 inch × 10 inch. The major advantages of this sampler as compared to other low-volume sampler (flow rate 16.67 lpm) are lower uncertainty in mass measurement, higher PM2.5mass collection and lesser sampling time. To develop this PM2.5HVI sampler, a series of simulation and experimental studies were carried out. The optimized D50cutoff size of 2.52 μm was obtained experimentally under real ambient conditions (i.e. with polydisperse ambient particles) after the parametric adjustments. The commercial PM2.5HV sampler cutoff size was also evaluated experimentally, and agreed well to the D50cutoff size of developed PM2.5HVI sampler. Field performance studies of developed PM2.5HVI sampler were also carried out under both high- and low- particle mass loading conditions along with commercial PM2.5high- and low-volume samplers. The developed PM2.5HVI sampler agreed well with commercial PM2.5high- and low-volume samplers, i.e. PM2.5HVS, BAM and WINS reference sampler in mass measurement with mean deviations of 12.7, 18.5 and 11.7 μg/m3(i.e. 5.05, 4.86 and 3.70%), respectively under tested conditions. This PM2.5HVI sampler is very useful especially where the extensive offline chemical analysis of filter samples/high amount of particulate material is needed for source apportionment studies or analysis of bioassay or toxicological purposes (in vitro/in vivo studies), diurnal studies, and air sampling where the mass concentration of particles is very low, e.g. marine, polar regions, most of the rural sites, etc.
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β 衰减监测器 (BAM) 和二分采样器 (Dichot) 24 小时平均 PM2.5 浓度的差异
影响因子：
5
作者：
Chun;A. Awasthi;Yi;Balakrishnaiah Gugamsetty;Chuen;Yueh;Chung
通讯作者：
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影响因子：
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作者：
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DOI：
--
发表时间：
1996
期刊：
影响因子：
--
作者：
A. Muyshondt;A. Mcfarland;N. K. Anand
通讯作者：
N. K. Anand
影响因子：
5.2
作者：
Lundgren, DA;Hlaing, DN;Marple, VA
通讯作者：
Marple, VA
改进的颗粒冲击器组件，用于尺寸选择性大容量空气采样器
DOI：
10.1016/0021-8502(89)90113-4
发表时间：
1987
期刊：
--
影响因子：
--
作者：
Langer
通讯作者：
Langer