Size distributions and characteristics of atmospheric inorganic particles by regional comparative study in Urban Osaka, Japan

Funasaka, Kunihiro; Sakai, Michihiko; Shinya, Masanao; Miyazaki, Toshimasa; Kamiura, Toshikazu; Kaneco, Satoshi; Ohta, Kouji; Fujita, Tadao

doi:10.1016/j.atmosenv.2003.08.004

Cited by 59 publications

(27 citation statements)

References 5 publications

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“…There was a relatively strong correlation (correlation coefficient ϭ 0.93) between wind speed and PM 10 concentration measured at source site A. [20][21][22][23][24][25][26] Shown in Figure 4a are the average (SD) size distributions of the three species measured at source site A. NO 3 Ϫ was found in both the fine and coarse modes, whereas SO 4 2Ϫ and NH 4 ϩ were found primarily in the fine particle mode and were significant fractions of the submicron particles (PM 1 ).…”

Section: Particle Concentrations and Distributions At Emission Sourcementioning

confidence: 88%

Mass-Size Distributions of Particulate Sulfate, Nitrate, and Ammonium in a Particulate Matter Nonattainment Region in Southern Taiwan

Tsai

Chang

Lin

et al. 2005

Journal of the Air & Waste Management Association

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Concentrations and distributions of three major watersoluble ion species (sulfate, nitrate, and ammonium) contained in ambient particles were measured at three sampling sites in the Kao-ping ambient air quality basin, Taiwan. Ambient particulate matter (PM) samples were collected in a Micro-orifice Uniform Deposit Impactor from February to July 2003 and were analyzed for watersoluble ion species with an ion chromatograph. The PM 1 / PM 2.5 and PM 1 /PM 10 concentration ratios at the emission source site were 0.73 and 0.53 and were higher than those (0.68 and 0.48) at the background site because there are more combustion sources (i.e., industrial boilers and traffic) around the emission source site. Mass-size distributions of PM NO 3 Ϫ were found in both the fine and coarse modes. SO 4 2Ϫ and NH 4 ϩ were found in the fine particle mode (PM 2.5 ), with significant fractions of submicron particles (PM 1 ). The source site had higher PM 1 /PM 10 (79, 42, and 90%) and PM 1 /PM 2.5 concentration ratios (90, 58, and 93%) for the three major inorganic secondary aerosol components (SO 4 2Ϫ , NO 3 Ϫ , and NH 4 ϩ ) than the receptor site (65, 27, and 65% for PM 1 /PM 10 ; 69, 51, and 70% for PM 1 /PM 2.5 ). Results obtained in this study indicate that the PM 1 (submicron aerosol particles) fraction plays an important role in the ambient atmosphere at both emission source and receptor sites. Further studies regarding the origin and formation of ambient secondary aerosols are planned.

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Section: Particle Concentrations and Distributions At Emission Sourcementioning

confidence: 88%

Mass-Size Distributions of Particulate Sulfate, Nitrate, and Ammonium in a Particulate Matter Nonattainment Region in Southern Taiwan

Tsai

Chang

Lin

et al. 2005

Journal of the Air & Waste Management Association

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“…Iron (Fe) was analyzed by inductively coupled plasma-atomic emission spectrometry, ICP-AES (Thermo-Jarrel Ash, IRIS 1000), and lead (Pb) was analyzed by Zeeman electrothermal atomic absorption spectrometry, AAS (Perkin-Elmer, Analyst 600), as described previously. 17) In these methods, the rates of recovery of the elements in the reference urban atmospheric particles (NIST, SRM1648a) were: Fe: 96% and Pb: 83% (each, n=3).…”

Section: Reagentsmentioning

confidence: 99%

Seasonal Fluctuations in Air Pollution in Dazaifu, Japan, and Effect of Long-Range Transport from Mainland East Asia

Coulibaly

Minami

Abe

et al. 2015

Biological & Pharmaceutical Bulletin

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To clarify the seasonal fluctuations in air pollution and the effect of long-range transport, we collected airborne particles (n 118) at Dazaifu in Fukuoka, Japan, from June 2012 to May 2013 and measured Pb and SO 4 2 , which are indicators of the long-range transport of anthropogenic air pollutants, as well as their mutagenicity, and other factors. The levels of airborne particles, Pb, and SO 4 2 were very high on March 4, 8, 9, and 19, and May 13, 21, and 22, 2013. The backward trajectories indicated that air masses had arrived from the Gobi Desert and northern China on those days. The mutagenicity of airborne particles was examined using the Ames test on Salmonella typhimurium YG1024. Highly mutagenic airborne particles were mostly collected in winter, and most of them showed high activity both with and without S9 mix. High levels of polycyclic aromatic hydrocarbons (PAHs) were found in many samples that showed high mutagenicity. For the samples collected on January 30, February 21, and March 4, the levels of Pb, SO 4 2 , PAHs, and mutagenicity were high, and the backward trajectories indicated that air masses present on those days had passed through northern or central China. The Japan Meteorological Agency registered Asian dust events at Fukuoka on March 8, 9, and 19, 2013. The results of the present study suggest that high levels of anthropogenic air pollutants were transported with Asian dust. Similarly, long-range transport of air pollutants including mutagens occurred on days when Asian dust events were not registered.Key words transboundary air pollution; airborne particle; Asian dust; China; Ames test; mutagenicity Many epidemiological studies have indicated that ambient air pollution is associated with mortality from lung cancer and respiratory diseases, and others. [1][2][3][4][5] The International Agency for Research on Cancer (IARC) announced that outdoor air pollution and particulate matter, which is a major component of outdoor air pollutants, are carcinogenic to humans (Group 1).6) In recent decades, emissions of air pollutants from mainland East Asia have unprecedentedly increased with the rapid economic growth 7) and long-range transport of air pollutants in East Asia has been reported in recent years. [8][9][10][11][12][13][14] The occurrence and transport of dust storms and anthropogenic air pollutants in East Asia have been monitored using satellite data and ground-based measurements in central Korea. 9,10) Kim et al. 9) reported episodes of anthropogenic pollutant particles that arrived at the Korean peninsula from eastern China and indicated that the anthropogenic pollutant particles were largely detected in the form of smoke over the Yellow Sea region. Takami et al. 12) assessed anthropogenic aerosols and dust particles (Asian dust or Kosa) at Cape Hedo in Okinawa Prefecture, Japan, using high-time-resolution apparatuses and clarified that the anthropogenic aerosols originated from Taiwan and southern China and had been transported in association with a cold front. Ohara et al. 13) an...

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“…Over Osaka, the AERONET observations at 670 nm in 2002 by Sano et al (2003) showed peaks in spring and summer seasons and lesser values during winter. Funasaka et al (2003) noted an enhancement in total and coarse mode particles in spring using surface observations over Osaka. The spring time AOT enhancement and corresponding lower AE agrees with this, although it must be noted that surface and total column measurements could as well be very different.…”

Section: Resultsmentioning

confidence: 97%

Analysis of Aerosol Properties Coupled with Meteorological Parameters over East Asia

Gerelmaa

Liu

Kuo

et al. 2015

Terr. Atmos. Ocean. Sci.

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This paper investigates the aerosol properties over the major East Asian stations of Beijing, Gosan, Osaka, Taipei, Mukdahan, and Bac-Giang, during the years 2002 -2008. Aerosol optical thickness (AOT) product from the moderate resolution imaging spectroradiometers (MODIS) onboard the Aqua and Terra satellites are used for this study. The aerosol robotic network (AERONET) ground observations are used to validate the satellite AOT. The daily, monthly, seasonal, and inter-annual AOT variations over the selected locations are described along with meteorological parameters from National Center for Environmental Prediction, National Center for Atmospheric Research (NCEP-NCAR) reanalysis data and Global Precipitation Climatology Center (GPCC) data. Angstrom exponent (AE), and fine mode fraction (FMF) from MODIS and AERONET are used to discuss the size, type and possible particle sources. Seasonal wind patterns from NCEP-NCAR reanalysis data are used to confirm particle transport from the source regions around the study area to the chosen stations. The results suggest that the maximum aerosol loading occurs over Beijing with the daily mean AOT reaching above 2.0. Gosan and Taipei are among the stations having the smallest AOT in most seasons with values below 0.5. Dust influence appears to be significant over Beijing, Osaka, and Gosan and to a lesser extent over Bac-Giang in the spring. Pollution, bio-mass burning, etc. contribute in the summer and spring over all stations. The detailed AOT characteristic over Mukdahan and Bac-Giang are reported for the first time.

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Size distributions and characteristics of atmospheric inorganic particles by regional comparative study in Urban Osaka, Japan

Cited by 59 publications

References 5 publications

Mass-Size Distributions of Particulate Sulfate, Nitrate, and Ammonium in a Particulate Matter Nonattainment Region in Southern Taiwan

Mass-Size Distributions of Particulate Sulfate, Nitrate, and Ammonium in a Particulate Matter Nonattainment Region in Southern Taiwan

Seasonal Fluctuations in Air Pollution in Dazaifu, Japan, and Effect of Long-Range Transport from Mainland East Asia

Analysis of Aerosol Properties Coupled with Meteorological Parameters over East Asia

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