Major factors affecting the ambient particulate nitrate level at Gosan, Korea

Kim, N.K.; Kim, Y.P.

doi:10.1016/j.atmosres.2007.10.017

Cited by 7 publications

(2 citation statements)

References 27 publications

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“…This process is inferred to explain the occurrence of a relatively lower abundance of WSON observed over Mount Tateyama compared to that found in Asian dust [ Mochizuki et al ., ]. Likewise, water‐soluble nss‐Ca 2+ concentration in aerosols is highly influenced by the aging processes (or chemical reactions), unlike lipid biomarker compounds, via the reactive uptake of acidic species such as anthropogenic HNO 3 and H 2 SO 4 on atmospheric mineral dust during long‐range transport [ Sullivan et al ., ; Kim and Kim , ].…”

Section: Resultsmentioning

confidence: 99%

Hydroxy fatty acids in snow pit samples from Mount Tateyama in central Japan: Implications for atmospheric transport of microorganisms and plant waxes associated with Asian dust

et al. 2016

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We report here the source apportionment of atmospheric soil microorganisms and higher plant metabolites based on chemical markers (hydroxy fatty acids: FAs) in the snowpack samples collected from Mount Tateyama in central Japan during spring 2009 (N = 6) and 2011 (N = 7). A homologous series of β‐hydroxy FAs (C9–C20), constituents of Gram‐negative bacteria (GNB), in snowpacks clearly suggest a long‐range atmospheric transport of dust‐associated bacteria followed by scavenging by snowflakes. Similarly, higher atmospheric abundances of α‐(C16–C32) and ω‐(C9–C30)‐hydroxy FAs in the snow layers containing Asian dust revealed contributions from soil microbes and higher plant epicuticular waxes. Moreover, covariation between the concentrations of hydroxy FAs and water‐soluble Ca2+ (dust tracer), together with calculated air mass backward trajectories, demonstrated their source regions such as the Taklamakan Desert, Gobi Desert, and Loess Plateau. A close match of molecular distributions of hydroxy FAs (with the predominance of ω‐ and β‐isomers) is noteworthy between snowpack (present study) and springtime aerosols from Chichijima Island in the western North Pacific (WNP). This observation suggests a “below‐cloud scavenging” of transported dust particles and associated soil microbes in the East Asian outflow by snowflakes. These distributions are, however, contrary to those observed in the fresh snow samples from Sapporo, northern Japan (predominance of α‐hydroxy FAs), which could be explained by “in‐cloud” microbial oxidation processes. This comparison, therefore, provides additional insights regarding the aeolian transport of soil microbes in the East Asian outflow to the WNP, which has not been available.

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Section: Resultsmentioning

confidence: 99%

Hydroxy fatty acids in snow pit samples from Mount Tateyama in central Japan: Implications for atmospheric transport of microorganisms and plant waxes associated with Asian dust

et al. 2016

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“…Daily mean data of PM 10 mass and ionic species concentrations were used. Details on the sampling and analysis procedure for the data used in this study are described in Kim and Kim (2008).…”

Section: Datamentioning

confidence: 99%

Analysis of the Measurement Difference for the PM10 Concentrations between Beta-ray Absorption and Gravimetric Methods at Gosan

Shin

Jung

Kim

2011

Aerosol Air Qual. Res.

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The measured mass concentrations of particulate matter less than 10 μm in diameter (PM 10 ) by β-ray absorption method (BAM) and gravimetric method (GMM) at Gosan, Republic of Korea have shown consistent difference. By using a gas/particle equilibrium model, positive error by the absorption of water at the filter in BAM during the measurements were quantified. The positive error occupied about 50% of the measurement difference. The contributions from the volatilization of ionic species to the difference were minor. However, this estimated water content difference could fully explain the concentration difference by the two methods. Multiple regression analysis was applied to the PM 10 mass concentration to find out the major factors that affected the concentration difference. Relative humidity, dust storm event and wind direction were identified as other major factors in addition to water absorption i.e., positive error. Still these

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Chemical Composition Change in TSP Due to Dust Storm at Gosan, Korea: Do the Concentrations of Anthropogenic Species Increase Due to Dust Storm?

Kim

Park

Kim

2009

Water Air Soil Pollut

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Aerosol composition change between dust storm and non-dust storm periods in spring is studied using the total suspended particle data measured at Gosan, a background area in Korea. The concentrations of eight inorganic ions and 12 elements were analyzed for the TSP samples collected from March 1992 to May 2006. Two-step statistical analyses were carried out for the data: F test and t test. The concentrations of anthropogenic ionic species showed increasing trend since 2003. The absolute concentrations of most anthropogenic species such as sulfate or nitrate increased (from 7.33 to 9.25 µg m −3 and from 2.04 to 4.84 µg m −3 , respectively) during the dust storm period. However, the enrichment factors or normalized concentrations based on Al of most anthropogenic species decreased during dust storm period (factor of 0.1-0.5). It suggests that, in general, relative importance of anthropogenic species during dust storm would be not high.

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Major factors affecting the ambient particulate nitrate level at Gosan, Korea

Cited by 7 publications

References 27 publications

Hydroxy fatty acids in snow pit samples from Mount Tateyama in central Japan: Implications for atmospheric transport of microorganisms and plant waxes associated with Asian dust

Hydroxy fatty acids in snow pit samples from Mount Tateyama in central Japan: Implications for atmospheric transport of microorganisms and plant waxes associated with Asian dust

Analysis of the Measurement Difference for the PM10 Concentrations between Beta-ray Absorption and Gravimetric Methods at Gosan

Chemical Composition Change in TSP Due to Dust Storm at Gosan, Korea: Do the Concentrations of Anthropogenic Species Increase Due to Dust Storm?

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