Ionic Compositions of PM10 and PM2.5 Related to Meteorological Conditions at the Gosan Site, Jeju Island from 2013 to 2015

Song, Jung‐Min; Bu, Jun-Oh; Lee, Jae Yun; Kim, Won-Hyung; Kang, Chang‐Hee

doi:10.5572/ajae.2017.11.4.313

Cited by 5 publications

(2 citation statements)

References 15 publications

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“…Carbonates from building dust may have larger particle sizes than PM 10 and therefore are not monitored by some authors in PM 10 [56]. Like ammonia, carbonates may be important for neutralizing acidic gaseous components [57].…”

Section: Enrichment Factors Of Trace Elementsmentioning

confidence: 99%

Concentration Variability of Water-Soluble Ions during the Acceptable and Exceeded Pollution in an Industrial Region

Švédová

Raclavská

Kucbel

et al. 2020

IJERPH

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This study investigates the chemical composition of water-soluble inorganic ions at eight localities situated in the Moravian–Silesian Region (the Czech Republic) at the border with Poland. Water-soluble inorganic ions were monitored in the winter period of 2018 (January, 11 days and February, 5 days). The set was divided into two periods: the acceptable period (the 24-h concentration of PM10 < 50 µg/m3) and the period with exceeded pollution (PM10 ˃ 50 µg/m3). Air quality in the Moravian–Silesian Region and Upper Silesia is among the most polluted in Europe, especially in the winter season when the concentration of PM10 is repeatedly exceeded. The information on the occurrence and behaviour of water-soluble inorganic ions in the air during the smog episodes in Europe is insufficient. The concentrations of water-soluble ions (chlorides, sulphates, nitrates, ammonium ions, potassium) during the exceeded period are higher by two to three times compared with the acceptable period. The major anions for both acceptable period and exceeded pollution are nitrates. During the period of exceeded pollution, percentages of water-soluble ions in PM10 decrease while percentages of carbonaceous matter and insoluble particles (fly ash) increase.

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Section: Enrichment Factors Of Trace Elementsmentioning

confidence: 99%

Concentration Variability of Water-Soluble Ions during the Acceptable and Exceeded Pollution in an Industrial Region

Švédová

Raclavská

Kucbel

et al. 2020

IJERPH

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“…Many studies have emphasized the complexity of SIA formation and have recommended further in-depth investigation, especially regarding the formation mechanisms for variously sized SIA particles. In recent years, although the ionic composition of coarse and fine particle fractions in South Korea has been reported (Kim et al 2006;Park et al 2016;Shon et al 2012;Song et al 2017), few studies have investigated the aerosol size distribution of WSIIs in South Korea (Park and Lee 2015;Park et al 2019;Park et al 2004). Furthermore, most previous research in South Korea has involved short-term measurements and focused on urban areas such as Seoul and Busan (Kim et al 2006;Shon et al 2012) or background areas such as Jeju Island and Baengnyeong Island (Kim et al 1998;Lee et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Day–night variation and size distribution of water-soluble inorganic ions in particulate matter in Ulsan, South Korea

Vuong

Choi

2021

Atmospheric Research

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In the present study, 11 size classes of particulate matter were collected from a semi-rural site in the industrial city of Ulsan, South Korea in 2019 to investigate the size distribution and day-night variation of water-soluble inorganic ions (WSIIs). Approximately 70% of the detected WSIIs were found in fine particles, with Na + , Ca 2+ , Cl − , and NO 3 − dominant (~70%) in coarse particles and SO 4 2− , NO 3 − , and NH 4 + (SNA) dominant (~70%) in fine particles. Monthly variation in total WSIIs was observed, with the highest average concentration found in April for both coarse (2.71 μg/m 3 ) and fine particles (5.75 μg/m 3 ). Given that this month is characterized by prevailing southeasterly winds, these high levels may represent the adverse effects of industrial activity.Coefficients of divergence for individual WSIIs exhibited large variability, which is indicative of significant day-night differences in meteorology, chemistry, and source contributions. The size distributions of Na + , K + , F − , Cl − , NO 3 − , and SO 4 2− were bimodal, while Mg 2+ , Ca 2+ , and NH 4 + were unimodal. Peaks were generally found at 1.8-5.6 μm and 0.18-0.56 μm for coarse and fine particles, respectively. By plotting the linear relationship between the mole charge ratios of SNA, we found that coarse NO 3 − particles were mainly the result of heterogeneous reactions between HNO 3 and sea salts or crustal species, while the homogeneous reaction of HNO 3 and NH 3 played a crucial role in the formation of fine NO 3 − particles. In conclusion, though day-night variation in WSIIs was apparent, especially in SNA, the formation pathways for both coarse and fine particles were similar for day and night. Based on the verification of the formation mechanisms for WSIIs at this semirural site, the influence of industrial activity on the secondary formation of PM in urban and industrial areas can be investigated further.

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Chemical Characterization of Precipitation by Air Pollutants on Jeju Island in Korea during 2015–2016

Song

Kim

et al. 2019

Bulletin Korean Chem Soc

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Precipitation samples were collected in the Jeju Island during 2015-2016, and the ionic components of the precipitation were analyzed to investigate the chemical composition and pollution characteristics of the precipitation. In a comparison of ion balance, electrical conductivity, and acid fraction for verification of the analytical data, the correlation coefficients showed within the range of 0.953-0.991. During the study period, the volume-weighted mean pH and electrical conductivity were 5.1 and 15.9 μS/cm, respectively. The precipitation was weakly acidic, with a high frequency of precipitation (43.8%) in the range of pH 5.0-5.5. The ionic strength of the precipitation was 0.2 AE 0.2 mM, indicating that 44.5% of the total precipitation was within the pure precipitation criteria. The volume-weighted mean concentrations (μeq/L) of the ionic components in the precipitation were in order of Cl − > Na + > NH 4. Sea salt (Cl − , Na + , Mg 2+ ) and secondary pollutants (NH 4 + , nss-SO 4 2− , NO 3 − ) contributed to the total ionic species in the precipitation samples by 52.6% and 33.6%, respectively. The acidity contributions by inorganic (nss-SO 4 2− , NO 3 − ) and organic (HCOO − , CH 3 COO − ) acids were 89.3% and 10.7%, respectively. The neutralization factors by ammonium and calcium carbonate were 0.44 and 0.21, respectively. A clustered back trajectory analysis showed that the concentrations of secondary pollutants were relatively high when airflow moved to Jeju Island from the China continent.

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Ionic Compositions of PM10 and PM2.5 Related to Meteorological Conditions at the Gosan Site, Jeju Island from 2013 to 2015

Cited by 5 publications

References 15 publications

Concentration Variability of Water-Soluble Ions during the Acceptable and Exceeded Pollution in an Industrial Region

Concentration Variability of Water-Soluble Ions during the Acceptable and Exceeded Pollution in an Industrial Region

Day–night variation and size distribution of water-soluble inorganic ions in particulate matter in Ulsan, South Korea

Chemical Characterization of Precipitation by Air Pollutants on Jeju Island in Korea during 2015–2016

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