Evaluation of aerosol sizing characteristic of an impactor using imaging plate technique.
Evaluation of aerosol sizing characteristic of an impactor using imaging plate technique.
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DOI：
10.1093/rpd/ncl106
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发表时间：
2007-02
影响因子：
1
通讯作者：
N. M. Rahman;T. Iida;Fumihiro Saito;J. Koarashi;K. Yamasaki;H. Yamazawa;J. Moriizumi
中科院分区：
文献类型：
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作者：
N. M. Rahman;T. Iida;Fumihiro Saito;J. Koarashi;K. Yamasaki;H. Yamazawa;J. Moriizumi
氡衰变产物的活度-粒径分布通常采用两种方法测定：直接法和间接法。本研究利用直接的方法来评估尺寸信息的低压级联撞击器使用成像板（IP）技术的氡衰变产物。实验验证了冲击器制造商建议的收集介质的使用，并对冲击器的尺寸特性提出了一些改进。氡衰变产物的相对活性尺寸分布呈现出尖锐的单峰对数正态分布的颗粒，其特征在于活性中值空气动力学直径（AMAD）为268 nm，几何标准偏差（σ（g））为1.66。通过从扫描迁移率粒度仪（SMPS，Model 3934，TSI Inc）获得的数据作为参考数据来评价具有所有建议改进的所获得的数据。该验证导致参比数据和实验数据之间的导数面积比为0.803。
The activity-size distribution of radon decay products are normally determined using two approaches: direct and indirect. The present study utilises the direct approach to evaluate sizing information of a low pressure cascade impactor using imaging plate (IP) technique for radon decay products. The experiment verified the use of the collection media as suggested by the manufacturer of impactor and proposed a few improvements toward sizing characteristics of impactor. The obtained relative activity-size distribution of radon decay products presents a sharp unimodal log-normal distribution of the particle characterised by activity median aerodynamic diameter (AMAD) of 268 nm and geometric standard deviation (sigma(g)) of 1.66. The obtained data with all the suggested improvements were evaluated by the data obtained from a scanning mobility particle sizer (SMPS, Model 3934, TSI Inc), as reference data. The verification lead to a derivative area ratio of 0.803 between the reference and experimental data.