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http://dx.doi.org/10.5322/JESI.2022.31.5.447

A Study on How to Improve the Accuracy of Automatic Micro Dust Measurement Equipment  

Cho, Min-cheol (Health and Environment Research Institute of Gwang-Ju)
Kim, Seung-Ho (Health and Environment Research Institute of Gwang-Ju)
Na, Hye-Yun (Health and Environment Research Institute of Gwang-Ju)
Kim, Nan-Hee (Health and Environment Research Institute of Gwang-Ju)
Cho, Gwang-un (Health and Environment Research Institute of Gwang-Ju)
Bae, Seok-Jin (Health and Environment Research Institute of Gwang-Ju)
Lee, Se-Haeng (Health and Environment Research Institute of Gwang-Ju)
Publication Information
Journal of Environmental Science International / v.31, no.5, 2022 , pp. 447-456 More about this Journal
Abstract
This study was conducted to propose a way to increase the accuracy and precision of 𝛽-ray measurement equipment. Statistical processing results of equivalent evaluation data from 2016 to 2021 confirmed that the concentration of micro dust measured by 𝛽-ray measurement equipment was higher than that of micro dust sampler. According to quarterly data, it was confirmed that the data from the third quarter (July to September) showed a different trend from other periods, which is assumed to be due to weather conditions. This study indicates that automatic micro-dust measurement equipment evaluation at air pollution measuring stations during the third quarter should be excluded. The evaluation cycle should be changed from once every two years to quarterly. In addition, when the criterion for determining equivalence evaluation falls within the range of the slope and intercept values of the existing trend line, it is necessary to evaluate the R2 value together and reduce the slope from 0.9-1.1 to 0.9-1.0.
Keywords
Micro dust; ${\beta}$-ray measurement equipment; Micro dust sampler; Equivalence evaluation;
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