Abstract：In order to evaluate the accuracy of BAM (Beta Attenuation Monitor) with simultaneous cone-sampler, two types of configuration instruments are compared with the long-term ambient air monitoring of inhalable particles (PM10) and fine particles (PM2.5), by using the BAM with step-by-step sampler as the reference method. According to EN 16450, this work evaluates the validity of the linear relationship of the data, establishes a modified linear equation, and derives the uncertainty evaluation formula between methods. The results demonstrate the effective linear relationship between the measuring results of BAM simultaneous cone-sampler and step-by-step sampler. After the concentration slope and concentration intercept are corrected by the built-in correction parameters, the slope, intercept and correlation coefficient (between reference method) of PM10 and PM2.5 meet the requirements of EPA-CFR-40-part53, even in case of relatively large concentration range (0~250μg/m3) and adequate data sets (n>100).
吴娟, 徐可欣, 迟颖, 周刚, 王玮. 两种不同构型b射线颗粒物分析仪线性关系的有效性评价[J]. 中国环境科学, 2022, 42(12): 5617-5625.
WU Juan, XU Ke-xin, CHI Ying, ZHOU Gang, WANG Wei. Evaluation of the linear relationship validity between two beta attenuation monitors with different configurations. CHINA ENVIRONMENTAL SCIENCECE, 2022, 42(12): 5617-5625.
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