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http://dx.doi.org/10.7780/kjrs.2021.37.6.2.8

Analysis of Correlation between Particulate Matter in the Atmosphere and Rainwater Quality During Spring and Summer of 2020  

Park, Hyemin (Division of Earth Environmental System Sciences (Major of Earth Environmental Sciences), Pukyong National University)
Kim, Taeyong (Division of Earth Environmental System Sciences (Major of Earth Environmental Sciences), Pukyong National University)
Heo, Junyong (Division of Earth Environmental System Sciences (Major of Earth Environmental Sciences), Pukyong National University)
Yang, Minjune (Department of Earth and Environmental Sciences, Pukyong National University)
Publication Information
Korean Journal of Remote Sensing / v.37, no.6_2, 2021 , pp. 1859-1867 More about this Journal
Abstract
This study investigated seasonal characteristics of the particulate matter (PM) in the atmosphere and rainwater quality in Busan, South Korea, and evaluated the seasonal effect of PM10 concentration in the atmosphere on the rainwater quality using multivariate statistical analysis. The concentration of PM in the atmosphere and meteorological observations(daily precipitation amount and rainfall intensity) are obtained from automatic weather systems (AWS) by the Korea Meteorological Administration (KMA) from March 2020 to August 2020. Rainwater samples (n = 216, 13 rain events) were continuously collected from the beginning of the precipitation using the rainwater collecting device at Pukyong National University. The samples were analyzed for pH, EC (electrical conductivity), water-soluble cations(Na+, Mg2+, K+, Ca2+, and NH4+), and anions(Cl-, NO3-, and SO42-). The concentration of PM10 in the atmosphere was steadily measured before and after the precipitation with a custom-built PM sensor node. The measured data were analyzed using principal component analysis (PCA) and Pearson correlation analysis to identify relationships between the concentration of PM10 in the atmosphere and rainwater quality. In spring, the daily average concentration of PM10 (34.11 ㎍/m3) and PM2.5 (19.23 ㎍/m3) in the atmosphere were relatively high, while the value of daily precipitation amount and rainfall intensity were relatively low. In addition, the concentration of PM10 in the atmosphere showed a significant positive correlation with the concentration of water-soluble ions (r = 0.99) and EC (r = 0.95) and a negative correlation with the pH (r = -0.84) of rainwater samples. In summer, the daily average concentration of PM10 (27.79 ㎍/m3) and PM2.5 (17.41 ㎍/m3) in the atmosphere were relatively low, and the maximum rainfall intensity was 81.6 mm/h, recording a large amount of rain for a long time. The results indicated that there was no statistically significant correlation between the concentration of PM10 in the atmosphere and rainwater quality in summer.
Keywords
particulate matter; precipitation,rainwater quality; correlation analysis; principal component analysis;
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Times Cited By KSCI : 2  (Citation Analysis)
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