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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of Korean Society for Atmospheric Environment
Journal Basic Information
Journal DOI :
Korean Society for Atmospheric Environment
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Volume & Issues
Volume 12, Issue 5 - Dec 1996
Volume 12, Issue 3 - Nov 1996
Volume 12, Issue 4 - Oct 1996
Volume 12, Issue 2 - Jun 1996
Volume 12, Issue 1 - Mar 1996
Volume 12, Issue E - 00 1996
Selecting the target year
Concentrations and Distributions of PAHs in Soils Sampled at the Roadsides in Seoul
Journal of Korean Society for Atmospheric Environment, volume 12, issue 5, 1996, Pages 517~521
Surface soils sampled at several sites in Seoul, Korea were analyzed to determine the concentrarions and distributions of PAHs. Results are as follow; 1) The Bap concentration in soils was found to be the highest in the industrial area (128 ng/g) and lowest in the residential area(19 ng/g). 2) The Py concentration in soils was highest in the tunnel area (1,110 ng/g) and the lowest in the Achasan area(18 ng/g). 3) The BghiP concentration in soils was higher in road (538 ng/g) and tunnel (532 ng/g) areas than in others areas. 4) It was shown that the PAHs concentrations in residential areas were affected by combution of fossil fuel, those in industrial, road, tunnel, terminal and commercial areas were affected by vehicle exhaust.
Elemental Analysis of Road Aerosols using by a PIXE Method
Journal of Korean Society for Atmospheric Environment, volume 12, issue 5, 1996, Pages 523~528
Aerosol Particles were collected in a heaby traffic region in pusan. Samples were collected in two size fractions with a two-stage sampler during the day and the night. Elemental concentrations of these aerosol particles were determined by a PIXE(Proton Induced X-ray Emission) analysis method. The results suggest that the elements originating mainly from natural sources such as Si, Ca, Fe, Cl, and K are dominent in the coarse fraction, but the elements such as S, Pb, Br, and Zn are dominent in the fine fraction. Br/Pb ratio are evaluated in both coarse and fine size fraction, and which are mainly emitted automobile sources. The study further also discussed other Br/Pb ratio related works described elsewhere. Sulfur in the fine fraction was continuously increased during the sampling period without time variation.
Evaluation of Gaussian Puff Model with Tracer Experiment under Nighttime Strong Stable Conditions
Journal of Korean Society for Atmospheric Environment, volume 12, issue 5, 1996, Pages 529~540
Dispersion experiment using SF
tracer was performed in the flat field of Chunchon Basin during four nights from August 29 to September 2, 1991. The purpose of this study is to analyze toe horizontal distribution of tracer concentration under the strong stable conditions and to evaluate the results calculated by INPUFF model. Incase of high wind speed, plume spread of SF
concentration appeared in narrow area of the downwind and the standard deviation of the horizontal wind angle (.sigma.
) was amall. However, the SF
was spread widely in cases of low wind speed because of the large .sigma.
. The result of the INPUFF model was similar to the observed distribution of the SF
concentration. It is proved that the Gaussian puff model is useful when wind direction varies significantly.tly.tly.tly.
Characteristics of the Baseline SO
Concentration Variations at Kosan, Cheju Island, Retrieved from 1994's Data
Journal of Korean Society for Atmospheric Environment, volume 12, issue 5, 1996, Pages 541~554
A set of 1994 data was analyzed to investigate the characteristics of background surface SO
concentrations at Kosan, Cheju Island, Korea. The SO
concentrations at Kosan site show a seasonal variation with a minimum(0.46 ppb) in summer, maximum(1.02 ppb) in spring and an annual mean of 0.83 ppb. These values were 4-7 times higher than those measured in other remote areas, such as Bermuda and Oki Island, but they were similar to the baseline concentrations of other sites in the world. The diurnal variation of SO
concentrations was very small and it shows a peak at 10 am in spring and fall, 2 pm in summer, and 1 pm in winter, respectively. Correlations between local meteorological parameters and SO
concentrations were mot significant. This suggests that the variations of the Kosan's SO
comcentrations were relatively independent on local meteorological variables. Backward trajectory analysis results showed that the seasonal variation of the OS
concentration was mainly due to the inflow of air masses from the continent in spring and from the Pacific Ocean im summer. The results also revealed that the air masses with the highest SO
concentration came through China or the Korea peninsula in spring and through Japan during summer. It was found that the SO
concentrations at Kosan were under the influence of passage of air masses arriving at this site.
An Assessment of the Long-Term Concentration of Heavy Metals and Associated Risk in Ambient PM-10
Journal of Korean Society for Atmospheric Environment, volume 12, issue 5, 1996, Pages 555~566
In order to assess the long-term airborne concentrations of 6 metals such as Cr, Cd, Pb, Zn, K, and Na and the associated health resk, a great number of PM-10 samples were collected and analyzed in Kyung Hee University-Suwon Campus for three years from 1991 to 1993. The 3-year average concentration of Pb in respirable particulate matters was 142.6 ng/m
while that of Zn was 1,210.5ng/m
. The corresponding hazard index from Pb Zn for the ingalation route was estimated to be 9.5.times.10
, respectively. Therefore, it can be said that there was no adverse chronic health effects by airborne Pb and Zn. However, the 2-year average concentration of Cr(6) was estimated to be 1.3ng/m
shile the 3-year average concentration of Cd was 3.1ng/m
. The total cancer risk by these two metals for the inhalation route was estimated to be about 7.2.times.10
. This order-of-magnitude risk estimate suggests that the ingalation risk in the study area from all carcinogenic metals including As and Ni (subsulfide) might exceed the acceptable risk criteria of 10
by U.S.EPA.For a better risk assessment in the future, alveolar deposition of PM-10 in the study area were also discussed and an assessment was done.
Assessment of Health Risk Posed by Orgnic Substances of Suspended Particulate Matters in a Heavy Traffic Area of Seoul
Journal of Korean Society for Atmospheric Environment, volume 12, issue 5, 1996, Pages 567~576
Air pollution has been recognized for many years as a factor which heightens the risk of cancer. Extractable polycyclic organic matters in air particulates have been recognized as to have carcinogenic effects. This study examined the health risks posed by organic substances of air particulates in Seoul based on methodelogies that have been developed for conducting risk posed by organic substances of sir particulates in Seoul based on methodologies that have been developed for conducting risk assessment of complex -chemical-mixture. The data used in this study was obtained from air samples collected in a heavy traffic area of Seoul (Shinchon) from 1986 to 1994. The mean concentration of total supended pariculates was 158.0.mu.g/m/msup 3/, 5% of which is consisted of organic matter. The excess cancer risk from benzo(a)pyrene (BaP) was estimated to be 3.48.times.10
by applying BaP unit risk estimates to the mean concentration. 8.74ng/m BaP equivalents of potency method was 1.0.times.10
. The calculated risk from EOM were comparably higher than that from benzo(a)pyrene and exceeded the acceptable risk level.
Numerical Simulation of NO Emission and Combustion Characteristics in Furnace
Journal of Korean Society for Atmospheric Environment, volume 12, issue 5, 1996, Pages 577~585
A screening study was performed in order to resolve the flow, combustion and emission characteristics of the gas furmace with co-axial diffusion flane burner. A control-valume based finite-difference method with the power-law scheme was employed for discretization. Numerical procedure for the differential equation was used by SIMPLEST to enclosute rapid converge. A k-.varepsilon. model was incorporated for the closure of turbulence. The mass fraction and mixture fraction were calculated by cinserved scalar method. An equilibrium analysis was employed to determine the concentration of radicals in the product stream and conserbation equations were them solved for N amd NO by Zelovich reaction scheme. The method was exercised in a simple one-dimensional case first, to determine the effects of air ratio, temperature and residence time on NO formation and applied to a furnace with co-axial diffusion flame burner.
An Intercomparison of Atmospheric SO
Journal of Korean Society for Atmospheric Environment, volume 12, issue 5, 1996, Pages 587~591
An intercomparison experiment was implemented to assess the uncertainties and precisions om atmospheric SO
measurement techiques including a pulsed fluorescence (P-F), a diffusion-scrubber /ion chromatography (D-I), and a mist-chamber/ion chromatography (M-I). Each of those three techniques was investigated by researchers at Seoul National University, Yonsei University, and Hankuk University of Foreign Studies, respectively. The concentrations of atmospheric SO
were determined concurrently using three independent measurement techniques at the Seoul National University campus, Korea during Nov.22 to Dec.2, 1995. While the results from the P-F and D-I techinques showed the very close agreements (within +-5%) throughout the experiment period, M-I technique showed systematically smaller values (up to 30%) than the other two techniques. Although sources of larger discrepancy between different techniques were mot identified, the lower SO
values of the M-I method may be related to the errors associated with sample collection effciency, mass flow rate measurements, and standardization of ion chromatography.
Release of Airborne Mercury from Major Waste Incineration Systems in Korea
Journal of Korean Society for Atmospheric Environment, volume 12, issue 5, 1996, Pages 593~596
The encironmental consequences of airborne mercury (Hg) release from waste incineration system are wellperceived. To provide some insights into those phenomena, we have assessed annual emission rates of Hg for several major incineration systems in Korea following the procedures developed abroad. The results of our computation, derived on the basis of dividing the whole amounts of annually incinerated wastes into municipal solid Wastes (MSW), and medical solid wastes (MDW), indicate that the extent of Hg release may be significant nationwide, possibly approaching a few tonnes of Hg per year basis. Knowing that the airborne transport and the resulting deposition of Hg can exert serious pollutions to the aquatic ecosystems, of particular fisheries, we are obliged to establish a stringent measure to confine the amount of Hg released via incineration.