Kim, Cheol-Min;Lee, So-Young;Lee, Eun-Ju;Kim, Lee-Hyung
Journal of the Korean Society of Hazard Mitigation
/
v.8
no.6
/
pp.155-160
/
2008
The urban areas have various landuses such as residential, commercial, industrial and official purposes that are highly concerned with human activities. The other landuses are relating to vehicle activities, which are roads, parking lots, bridges, parks etc. The mainly using landuses by human activities are possessing three different areas that are buildings, parking lots/roads and landscapes. Of these areas, the buildings and landscapes can be classified as non-pollution areas. However, the parking lots or roads are classifying as the main pollution areas because of vehicle activities. Therefore, the landuses arising the nonpoint pollution during a storm in urban areas are roads and parking lots. The vehicles are emitting lots of nonpoint pollutants such as metals and particulate matters and it is impacting on water qualities and aqua-ecosystems nearby the city areas. Therefore, this research was conducted for characterizing the pollutant types and determining the EMCs (Event Mean Concentrations) and unit pollutant loads during a storm. The monitoring was performed on 9 locations such as highways, service area, tollgates, parking lot and bridges. All of the landuses selected for monitoring are concerned with transportation. The results can be effectively used to predict the pollutant loading before urban planning and to select the BMPs (Best Management Practices) for reducing the pollution.
This study was performed to investigate present water quality and pollution characteristics of them in the basin area of the Mankyung river near Chonju urban stream. In order to obtain the pollution characteristics of this investigation, the physio-chemical water analysis as temperature, pH, DO, BOD, Cd, Cu, Pb and Zn, and coliform group and their correlation analysis were determined from March to August 1988. The main results were summarized as follows 1. Each chemical constituent detected in three streams has the following variation range as pH(6.7-7.3), DO(1.3-8.9 mg/l), BOD(1.6-162.5mg/l) and water temperature was dominated by atmospheric temperature. 2. In three streams, concentration range of heavy metal was Cd N.D.-2.8 $\mu$g/l, Cu 1.1-10.2 $\mu$g/l, Pb 2.1-13.2 $\mu$g/l and Zn 25.6-62.2 $\mu$g/l, and was shown the order of Zn, Pb, Cu and Cd. 3. In the investigation on the bacteriological pollution-in the three streams. 1) The average number of general bacteria contaminated in the Chonju urban stream was $1.7 \times 10^{5}$ numbers/ml, which was higher than $2.6 \times 10^{2}$ numbers/ml, in the Gosan stream and 1.6 $\times$ 10 numbers/ml in the Mankyung river. 2) The average number of total coliform, fecal coliform and fecal streptococcus contaminated in the Chonju urban stream which was the highest polluted site than those of the other sampling sites were respectively $2.1 \times 10^{5}$, $2.1 \times 10^{5}$ and $9.6 \times 10^{4}$ MPN/100ml. 4. Correlation coefficient between GB and TC in the Chonju stream, Gosan stream and Mankyung river was respectively 0.99, 0.96 and 0.99, Correlation coefficient between TC and FC in Chonju stream, Gosan stream and Mankyung river was respectively 0.99, 0.97 and 0.99 and correlation coefficient between FC and TC was respectively 0.99, 0.91 and 0.99. This results mean positively dose relationship between them. 5. The occupied percentage of FC of TC in the Chonju stream, Gosan stream and Mankyung river was respectively 88.1%, 68.4% and 77.9% and the percentage of Tc of TS was respectively 43.5%, 31.6% and 41.4%. These .results was considered indicative of pollution derived from domestic wastes which had been contaminated by the feces of inhabitants and domestic animals.
Journal of Korean Society for Atmospheric Environment
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v.8
no.4
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pp.221-228
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1992
In order to evaluate the degree of air pollution, soils from 125 and 60points of main streets of Seoul and Daejeon, respectively, were sampled and analyzed for the contents of lead, copper, iron and zinc by nitric acid($HNO_3$) extraction followed by atomic absorption spectrophotometry during June and September, 1990. The Pb contents of Seoul and Daejeon were 350.2$\mu$g/g and 175.9$\mu$g/g, respectively, which were 14.5times and 7.3times respectively higher than the control(24.0). In Seoul, the commercial area gave the highest value followed by resdential and industrial areas in the decreasing order, while the order in Daejeon was Industrial, commercial and residential areas. The Cu contents in Seoul and Daejeon were very similar(236.6 and 234.6, respectively) each other, and about 11times higher than the control(20.9). The concentration was highest in industrial, followed by commercial and the lowest in residential areas in Seoul, while the order in Daejeon was industrial, residential and commercial areas. The Fe contents were 25716.5 in Seoul and 22838.6 in Daejeon, both being similar to the control value(22537.0). The value was highest in industrial and next in commercial areas and the lowest in residential area both in Seoul and Daejeon. The Zn contents in Seoul and Daejeon were 728.2 and 404.0, respectively, wihch were 6.3 and 3.6times higher than the control(113.3). The value was highest in commercial and next in industrial areas and the lowest in residental area in Seoul, while the order was industrial, residential and commercial areas in Daejeon. The heavy metal content was higher in the soil of main streets than that of minor streets in Seoul. The content of lead in Seoul was higher in the streets of Chongro-ku(525.9) and Chung-ku(684.8), the central area of the city which had a heavy traffic, than those in Nowon-ku(320.3) and Kwanak-ku(312.6) which had relatively less traffic crowd. The similar pattern was observed in the content of zinc; it was higher in Chongro-ku(1305.0) and Chung-ku(1335.4) than in Nowon-ku(489.1) and Kwanak-ku(569.8). In Daejeon, the contents of lead and zinc were decreasing as the distance from Daejeon Railroad Station increased : they were respectively 157.8 and 447.7 within 2km from the station, 157.6 and 235.7 with in 2-4km, and 63.5 and 156.2 within 4-6km and 58.7 and 142.2 within 6-8km. In summary, the contents of lead, copper and zinc were generally higher in the central area of the city, areas of heavy traffic and areas of industry and commerce.
The impervious surface rate increased by urbanization causes various problems on the environment such as water cycle distortion, heat island effect, and non-point pollutant discharges. The Low Impact Development (LID) techniques are significantly considered as an important tool for stormwater management in urban areas and development projects. The main mechanisms of LID technologies are hydrological and environmental pollution reduction among soils, media, microorganisms, and plants. Especially, the media provides important functions on permeability and retention rate of stormwater runoff in LID facilities. Therefore, this research was performed to assess the pollutant removal efficiency for different types of media such as zeolite, wood chip, bottom ash, and bio-ceramic. All media show high pollutant removal efficiency of more than 60% for particulate materials and heavy metals. Double layered media is more effective in reducing heavy metals by providing diverse sizes of micro-pores and macro-pores compared to the single layered media. The results recommend the use of different sizes of media application is more cost-effective in LID than a single size of media. Furthermore, soluble proportion of total heavy metal in the stormwater is an important component in proper media selection and arrangement.
Paddy lands around industrial areas in Gyeonggi and Jeonbuk provinces are increasingly concerned about pollution by heavy metals. This stimulated the quantitative analysis of copper, zinc, lead and cadmium in the soil from the aress concerned. Results obtained are summarized as follows: 1. Heavy metal contents of the soil from Sue-Myun, Siheung-Gun, Gyunggi province were 20.95 ppm of Cu, 226.46 ppm of Zn, 84.17 ppm of Pb, and 2.62 ppm of Cd, respectively. Those of Anyang, Kimpo, and Jeonbuk areas were as low as the natural background levels, about 10 ppm. 2. The contentration of heavy metals of the river valley soils tended to increase from upper stream to the lower. This seemed to be caused by the fact tat disposed water from plants flows to the lower stream and metals contained in the water accummlate in the soils around the lower stream. 3. Cadmium content was exceptionally lower than 0.2 ppm in all the areas tested. The present concentartion of cadmium is not of the extent to which any injury could occur to rice plants.
Yoon, Jeong-Ki;Kim, Rog-Young;Kim, Ji In;Noh, Hoe-Jung;Yu, Soon-Ju;Kim, Tae Seung;Lee, Myung Gyu;Yun, Dae-Geun;Lee, Hong-gil;Kim, In Ja;Park, Gyoung-Hun
Journal of Soil and Groundwater Environment
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v.20
no.7
/
pp.61-69
/
2015
This study was performed to provide fundamental data to establish the new soil pollution standards and the soil contamination management plans in a rational manner. The distribution characteristics of new soil contaminants such as barium (Ba) and chromium (Cr) in soils (n=140) were investigated in relation to land-use classification and geological features. Also, the sequential extraction test was conducted to evaluate fate and mobility of new soil contaminants. The soil samples taken from 140 sites were analyzed to survey distribution levels of selected new soil contaminants. The average concentration and range for hazardous metals (Ba, Cr) were Ba 128.946 (26.757~489.587) mg/kg, Cr 30.121 (2.579~132.783) mg/kg. Based on land use classification, the highest Ba concentration was found in factory soils, followed by dry field and park soils, while Cr concentration was highest in rice paddy soils, followed by dry field and factory soils. Within 10 geological units investigated the highest Ba and Cr concentrations were observed in the soils from Okcheon group and metamorphic rocks, respectively. The BCR (European Community Bureau of Reference) sequential extraction was conducted to identify chemical distributional existence of 2 elements of soils from each geological unit. Ba in soils is mainly assumed to exists as reducible form (such as BaSO4, BaCO3) and Cr in soils mainly is assumed to exist as residual form (such as Cr2O3, CrxFe1-x(OH)3(x < 1)).
Journal of Physiology & Pathology in Korean Medicine
/
v.19
no.5
/
pp.1204-1212
/
2005
Lung cancer is one of the common malignant tumors in the world. It occurs more increasingly due to the serious air pollution, heavy smoking, expoure to ionized radiation, pollution with heavy metal, and owing to well advanced diagnostic skill, etc. Also lung cancer has the limitation of medical care because metastasis is already shown up in more than half cases when it is first detected through medical examination. Although it is treated with chemoradiation, the rate of deaths from lung cancer is high as well, because blood has a lot of toxicity which give side effects. So it has a low rate of cure. So, the ways of various treatment is being researched to raise the rate of care and decrease the side effects recently, and one of the results is inducing apoptosis which makes use of molecularbiologic diagnosis of lung cancer's cell and using oriental medicine drugs. The purpose of this study is whether apoptosis would happen on the human lung carcinoma cell by treated with Junglyeokdaejosape-tang, Junglyeok-tang Junglyeokdaejosape-tang and Junglyeok-tang has been prescribed for cough, chest pain, and many other similar cases. Cough and chest pain is shown in early lung cancer. That is why we used these prescriptions. Apoptosis happend on the human lung carcinoma A549 cells treated with Jeongiyeokdaejosapye-tang, Jeonglyeok-tang. The concentration-dependent inhibition of cell viability was observed and apoptosis was confirmed by DNA fragmentation. Bcl-2 and COX-2 mRNA expression decreased, but Bax mRNA expression increased, so it was identified with the case of indomethacin known to enhance apoptotic DNA fragmentation. Also expression of the p21, p53, cyclin E, cyclin D1, cytochrome c, caspase-3, and caspase-9 protein increased and the activity of caspase-3 increased, as well. Last, fragmentation of the PARP was shown. The previous and present results indicated that apoptosis of A549 cells by above-mentioned drugs is associated with the blockage of G1/S progression.
Journal of Korean Society for Atmospheric Environment
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v.26
no.6
/
pp.606-615
/
2010
This study aims to identify the characteristics of soil in Mongolia, one of the major Asian dust sources that influence the Korean Peninsula. Soil particle size was analyzed and the result shows that sand (57.5~97.3%) was identified prominently in most regions, followed by silt (2.5~34.7%) and clay (0.0~7.8%). Soil pH of the covered regions were in the range 7.1~10.1, either weak alkaline or strong alkaline. Analysis of ion species in the soil samples exhibited that $Na^+$ ($91.9\;mg\;kg^{-1}$), $Cl^-$ ($65.9\;mg\;kg^{-1}$), and $Ca^{2+}$ ($53.5\;mg\;kg^{-1}$) were detected more in the soil than other species such as ${SO_4}^{2-}$ ($19.2\;mg\;kg^{-1}$), ${NO_3}^-$ ($46.6\;mg\;kg^{-1}$), ${NH_4}^+$ ($3.9\;mg\;kg^{-1}$), $K^+$ ($22.0\;mg\;kg^{-1}$), and $Mg^{2+}$ ($10.2\;mg\;kg^{-1}$). As for heavy metal content in the soil, concentrations of soil-borne metals including Fe, Al, Ca, Mg, and K tended to be high, while metals that come from manmade sources Pb, Cd, Cr, V, and Ni were remarkably low. The concentration of organic carbon (OC) was relatively high at $15.9\;{\mu}g\;mg^{-1}$, while elemental carbon (EC), directly released in the process of fossil fuel combustion, was not detected at all or found in very small amounts. The result indicates that pollution from manmade sources scarcely occurred. The analysis results from this study may contribute to improving modeling accuracy by providing input data for Asian dust prediction models, and be used as base data for determining the process of physiochemical transformation of Asian dust during long-range transport.
In order to select more proper plants for phytoextraction at the heavy metal polluted areas, 11 species of non-edible plants were cultivated at the cadmium(Cd) and Lead(Pb) treated soils and analyzed the content of the absorbed Cd and Pb in each part of plants. Plants include three fibers(Linum usitatissimum, Cannabis sativa, Gossypium spp.), three flowers(Calendula officinalis, Rhododendron lateritium, Portulaca grandiflora), and five trees(Pinus thunbergii, Magnolia kobus, $Populus\;nigra\;{\times}\;P.$ maximowiczii, Euonymus japonica, Fraxinus rhynchophylla). Yield of tree species were higher than that of fiber and flower species. Cd and Pb were highly accumulated in root rather than leaves and stems. The Cd content of plants was in the order Portulaca grandiflora > Calendula officinalis > Gossypium spp. > Linum usitatissimum, Pb was Cannabis sativa > Linum usitatissimum > Fraxinus rhynchophylla. Total absorbed Cd by each plant was in the order $Populus\;nigra\;{\times}\;P.$ maximowiczii > Euonymus japonica > Rhododendron lateritium, but Pb was $Populus\;nigra\;{\times}\;P.$ maximowiczii > Rhododendron lateritium > Euonymus japonica. Total absorbed Cd and Pb contents in plants were negatively correlated with the residual Cd and Pb in the treated soils. It was estimated that $Populus\;nigra\;{\times}\;P.$ maximowiczii, Euonymus japonica, Fraxinus rhynchophylla, and Rhododendron lateritium were the most effective species for phytoextraction in the polluted area considering yield and heavy metal uptake.
The quality of groundwater in the central part of Taegu City is influenced by upstreams of Sin-stream and Beomeo-stream because the stream waters are main source of the groundwater, and chemical composition of the upstream waters has close relationship with andesite and monzonite in the igneous rock terrain. The pH of upstreams are weak acid ~ neutral in the igneous rock area and weak alkaline in the sedimentary rock area. Contents of $Ca^{2+}$ and $Mg^{2+}$ in the streams are apparently high, and $Na^{+}$ content is only slightly high in the sedimentary rock area. But $K^{+}$ content is lower in the Panyaweol formation area than in the monzonite area. The contents of heavy metals and $N0_3^{-}$ are also higher in the sedimentary rock area of residential sections and industrial complexes than those in the igneous rock area. The groundwater is contaminated in comparison to the upstream water of the igneous rock areas, and there are some differences in pollution level between the Panyaweol formation area of residential sections and the Haman formation area of industrial complexes. K, Na, Ca, Mg, Cl, $SO_4$ and $NO_3$ contents in the Haman formation area are relatively higher than those in the Panyaweol formation area. But pH is nearly equal in the two areas. The content of heavy metal ions is still lower than the drinking water standard of Korea and only slightly differs in the two sedimentary rock areas. But the groundwater in the Haman formation area is considerably contaminated by Kongdanstream and Dalseo-stream.
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