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Influences of Long‐Range Transported Air Pollutants on Atmospheric TSP Aerosol Compositions at Jeju Island of Korea during 2011–2013
Author(s) -
Song JungMin,
Bu JunOh,
Kim WonHyung,
Kang ChangHee
Publication year - 2016
Publication title -
bulletin of the korean chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.237
H-Index - 59
ISSN - 1229-5949
DOI - 10.1002/bkcs.10731
Subject(s) - aerosol , environmental chemistry , particulates , chemistry , ammonium , carbonate , inorganic ions , air mass (solar energy) , sulfate , chemical composition , atmosphere (unit) , ion , geography , meteorology , physics , organic chemistry , boundary layer , thermodynamics
Atmospheric total suspended particulate aerosols were collected at the Gosan site of Jeju Island during 2011–2013, and their major water‐soluble ionic and elemental species were analyzed in order to examine the chemical composition change and pollution characteristics change between Asian dust ( AD ) and non‐Asian dust ( NAD ) periods. The comparison of the aerosol compositions showed that the concentrations of soil‐originated species such as nss‐Ca 2+ , Al, Fe, Ti, Mn, Ba, and Sr increased by as much as 4.5–18.6 times during the AD periods. Meanwhile, the concentrations of nss‐ SO 4 2 − and NO 3 − , typical secondary aerosol species, increased 1.2 and 2.5 times, respectively. On the contrary, NH 4 + concentration decreased slightly during the AD periods, probably because of the neutralization reaction of acidic ammonium ion with basic calcium carbonate. A comparison of ion balances suggested that the carbonate contents in AD are likely much larger than those of NAD . Based on a cluster back‐trajectory analysis, it was found that the concentrations of anthropogenic and soil‐sourced components, such as nss‐ SO 4 2 − , NO 3 − , NH 4 + , and nss‐Ca 2+ , increased when an air mass moved into Jeju Island from the China continent, but decreased when an air mass moved from the North Pacific Ocean.