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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Korean Journal of Environmental Health Sciences
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Journal DOI :
Korean Society of Environmental Health
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Volume & Issues
Volume 38, Issue 6 - Dec 2012
Volume 38, Issue 5 - Oct 2012
Volume 38, Issue 4 - Aug 2012
Volume 38, Issue 3 - Jun 2012
Volume 38, Issue 2 - Apr 2012
Volume 38, Issue 1 - Feb 2012
Selecting the target year
Spatial Analysis Methods for Asbestos Exposure Research
Kim, Ju-Young ; Kang, Dong-Mug ;
Korean Journal of Environmental Health Sciences, volume 38, issue 5, 2012, Pages 369~379
DOI : 10.5668/JEHS.2012.38.5.369
Objectives: Spatial analysis is useful for understanding complicated causal relationships. This paper focuses trends and appling methods for spatial analysis associated with environmental asbestos exposure. Methods: Literature review and reflection of experience of authors were conducted to know academic background of spatial analysis, appling methods on epidemiology and asbestos exposure. Results: Spatial analysis based on spatial autocorrelation provides a variety of methods through which to conduct mapping, cluster analysis, diffusion, interpolation, and identification. Cause of disease occurrence can be investigated through spatial analysis. Appropriate methods can be applied according to contagiousness and continuity. Spatial analysis for asbestos exposure source is needed to study asbestos related diseases. Although a great amount of research has used spatial analysis to study exposure assessment and distribution of disease occurrence, these studies tend to focus on the construction of a thematic map without different forms of analysis. Recently, spatial analysis has been advanced by merging with web tools, mobile computing, statistical packages, social network analysis, and big data. Conclusions: Because the trend in spatial analysis has evolved from simple marking into a variety of forms of analyses, environmental researchers including asbestos exposure study are required to be aware of recent trends.
Pallidal Signal Intensities on T1-weighted MRI are Highly Observed in Advanced Liver Cirrhosis
Weon, Young-Cheol ; Park, Neung-Hwa ; Kim, Yang-Ho ; Lee, Heun ;
Korean Journal of Environmental Health Sciences, volume 38, issue 5, 2012, Pages 380~385
DOI : 10.5668/JEHS.2012.38.5.380
Background: Manganese (Mn) has been found to increase the signal intensity of the globus pallidus (GP) on T1-weighted magnetic resonance images (MRI). We performed this study in order to determine the features of liver disease that correlate with pallidal signal intensities. Methods: We assessed blood Mn levels and pallidal signals in T1-weighted MRI in 49 patients with liver cirrhosis and 23 healthy controls. Results: Increased signal intensity in the GP was observed in 30 of 49 (61.2%) patients with liver cirrhosis, with the pallidal index (PI) in patients with Child-Pugh classes B and C differing significantly from the PI in controls. Multiple linear regression analysis showed that blood Mn concentrations and Child-Pugh scores in cirrhotics were significantly associated with increased PI after controlling for other confounders (p<0.05 each). Conclusions: Pallidal signals on T1-weighted MRI are mainly observed in advanced liver cirrhosis. The present study suggests that advanced liver cirrhosis may be a human model for manganism.
Dietary Intake and Venous Blood Concentration of Polycyclic Aromatic Hydrocarbons in Low-level Exposure
Moon, Chan-Seok ;
Korean Journal of Environmental Health Sciences, volume 38, issue 5, 2012, Pages 386~392
DOI : 10.5668/JEHS.2012.38.5.386
Objectives: This study aims to evaluate the blood concentrations and dietary intake for 24-hour food duplicate of low level polycyclic aromatic hydrocarbons (PAHs). Design: The geometric means of the blood concentrations and dietary intake of 16 PAHs in college student candidates were simply compared with instrumental detection. Methods: The concentrations of 16 PAHs in venous blood and 24-hour food duplicates were analyzed with head-space solid phase microextraction (HS-SPME) of gas chromatography-mass spectrometry. Results: Naphthalene, acenaphthylene, pyrene, benz(a)anthracene, chrysene, and acenaphthene among the 16 analyzed PAHs were simultaneously detected both in venous blood and 24-hour food duplicate samples. Conclusion: The main exposure source of the six PAHs is thought to be oral intake from food through low level non-occupational exposure.
Exposures of Ultrafine Particles for Passengers of Elephant Vehicle in the Seoul Grand Park
Joo, Song-Yi ; Hwang, Ji-Hee ; Ham, Seung-Hon ; Lee, Ki-Young ;
Korean Journal of Environmental Health Sciences, volume 38, issue 5, 2012, Pages 393~397
DOI : 10.5668/JEHS.2012.38.5.393
Objectives: The objectives of this study were to measure passengers' exposure to ultrafine particles (UFP) and to determine effects of fuel, operating condition and position of seat. Method: UFP exposures in front and back seats of the Elephant vehicle in Seoul Grand Park were simultaneously measured by a condensation particle counter (P-Trak model 8525, TSI). The measurements were conducted 7 times with diesel-powered vehicle and 3 times with electricity vehicle in one day. The vehicle stopped at 3 locations along with 2.2 km of driving route. Results: UFP concentration in diesel-powered vehicle was significantly higher than electricity vehicle. At front seat of diesel-powered vehicle, average UFP exposure during stopping was significantly higher than during moving. When diesel-powered vehicle moved, UFP exposure in back seat was significantly higher than in front seat. Conclusions: Passengers in the diesel-powered Elephant vehicle could be exposed to high level of UFP. The UFP exposure was associated with operation condition and position of seat.
A Study on the Allergen Skin Test Prevalence in the Residents of a Non-Industrial Area
Ahn, Seung-Chul ; Kim, Dae-Seon ; Yu, Hwa-Yon ; Kwon, Young-Min ; Zoo, Duck-Hyun ;
Korean Journal of Environmental Health Sciences, volume 38, issue 5, 2012, Pages 398~406
DOI : 10.5668/JEHS.2012.38.5.398
Objectives: In order to investigate the relation between environmental pollution and its effect on human health in large-scale industrial complex regions, monitoring studies have been conducted since 2003. The main purpose of this Gangneung study is to produce background data which can be compared with several large-scale industrial complex regions such as Ulsan, Sihwa, Banwol, Gwangyang, Yeosu, Pohang and Cheongju Daesan industrial complexes. Methods: In this Gangneung study, 1,007 local residents were recruited and the framework of this study was designed to evaluate and monitor health effects associated with low-level but long-term exposure to environmental pollutants. A survey was performed based on personal questionnaires, medical check-ups, and allergy skin prick tests for twelve common allergens. The authors reviewed the prevalence rate of skin allergens in Gangneung compared with in large-scale industrial areas. The results are summarized as follows. Results: The diagnosis prevalence and medical treatment prevalence of asthma were lower than in industrial complex regions, but allergic rhinitis was higher. The allergy skin test prevalence was 26.0% and the most common allergens were dust mites (D. pteronysinus 16.7% and D. farinae 16.3%). Conclusions: The positive findings of the skin prick test were similar with large-scale industrial complex regions in Korea. Further study is required to find the cause of the regional differences in skin prick prevalence.
Distribution Characteristics of Airborne Fungi in a Partial Area of Seoul City
Kim, Ki-Youn ; Kim, Dae-Keun ;
Korean Journal of Environmental Health Sciences, volume 38, issue 5, 2012, Pages 407~414
DOI : 10.5668/JEHS.2012.38.5.407
Objectives: This study was performed to assess based on field investigation the distribution characteristics of airborne fungi in an area of Seongdong-gu, Seoul. Methods: Three sites, a living area, forest and traffic site, were selected for evaluation of monthly level of outdoor airborne fungi. An on-site survey was executed between January 2009 and December 2009. During the experimental period, air sampling was performed every month in the afternoon (2:00 pm-5:00 pm) using a cascade impactor. Results: Outdoor airborne fungi measured in Seoul, Korea over one year showed a concentration range from 850CFU
. The mean respirable fraction of outdoor airborne fungi was 67% compared to total concentration. Regardless of measurement site, there was no significant concentration difference in outdoor airborne fungi between periods of yellow dust and non-yellow dust (p>0.05). There was no significant correlation relationship between outdoor airborne fungi and atmospheric factors such as temperature and relative humidity. The predominant genera of airborne fungi identified were Aspergillus, Cladosporium, Paecilomyces and Penicillium. Conclusion: Monthly levels of outdoor airborne fungi were highest in April and November and lowest in August. In seasonal concentration distribution, the autumn showed the highest level of outdoor airborne fungi, followed by spring, summer and winter. In regional concentration distribution, the highest level of outdoor airborne fungi was generally found in the forest, followed by the living area and traffic site.
Antibiotic Resistance of Food-Borne Pathogens Isolated from an Indoor Environment of a Lunchroom in a Child Care Center
Kim, Jung-Beom ; Kim, Jong-Chan ;
Korean Journal of Environmental Health Sciences, volume 38, issue 5, 2012, Pages 415~423
DOI : 10.5668/JEHS.2012.38.5.415
Objectives: This study was performed in order to evaluate antibiotic resistance and analyze the multiple antibiotic resistance of food-borne pathogens isolated from indoor air and an air cleaner at a lunch room in a child care center. Methods: An antibiotic test of food-borne pathogens, including four Staphylococcus aureus and 23 Bacillus cereus was conducted through the disk diffusion method from Clinical and Laboratory Standard Institute. Results: All Staph. aureus was resistant to Ampicillin and Penicillin, while B. cereus was also resistant to Ampicillin, Cefepime and Penicillin. All isolates showed Vancomycin susceptibility but three out of four Staph. aureus and all B. cereus were resistant to Oxacillin. Staph. aureus and B. cereus presented two or more multiple antibiotic resistances. Conclusions: The results indicated that food-borne pathogens isolated from indoor air and an air cleaner at a lunch room in a child care center showed multiple antibiotic resistances. The repeated control of indoor environment quality is required and continuous surveillance of antibiotic resistant strains is demanded.
A Study on Grain Size Dependency of Selected Heavy Metals in the Surface Sediment of Lake Paldang
Shin, Kyung-Yong ; Jun, Sang-Ho ;
Korean Journal of Environmental Health Sciences, volume 38, issue 5, 2012, Pages 424~430
DOI : 10.5668/JEHS.2012.38.5.424
Objective: The purpose of this study was to present the standard deviation of the elemental normalization of concentration of selected heavy metals in the surface sediment of Lake Paldang. Methods: Grain size dependency of selected heavy metal concentrations in the surface sediments of Lake Paldang was analyzed by the extrapolation method. The heavy metal concentrations were the sum of all fractions. Results: Cd and Cu showed an increase of the coefficient of determination(
) in the fractional content of particle size, from <256
, and a decrease from <20
. The normalized concentration of Cd and Cu by extrapolation at 50% <20
were 0.8 mg/kg, 37.0 mg/kg, 57.6 mg/kg and 201.7 mg/kg respectively. Conclusions: The normalized concentrations in the sediment of Lake Paldang are 1.5-2.0 times higher than mean average concentration. We concluded that in interpretation of heavy metal concentration in the sediment of Lake Paldang, normalization of grain size dependency should be considered.
Effects of Kudzu Leaf Extracts on Stress Reduction in Rats with Damaged Larynxes
Lee, Tae-Jong ; Yea, Chun-Jung ;
Korean Journal of Environmental Health Sciences, volume 38, issue 5, 2012, Pages 431~437
DOI : 10.5668/JEHS.2012.38.5.431
Objectives: This study aims to investigate the effects of voice disorders on changes in stress among people with damaged larynxes. To accomplish this, physiological changes and reductions in the stress of Sprague-Dawley rats whose larynx had been damaged were investigated after the laboratory animals were administered kudzu leaf extracts with sedative effects. Methods: In the experiment, a total of 24 rats were divided into four groups of six rats, including the normal group, control group, experimental group 1, and experimental group 2. After orally administering to the subjects a predetermined amount of the extract at a specific time (once per day over five weeks), changes in physiological functions, internal organ weight, cortisol, estrogen, and progesterone in the subjects were examined, and an immunological test was conducted on their brain tissues. Results: Statistical significance was seen in the experimental group as opposed to the control group and the results were similar to those of the normal group. Conclusions: In consideration of these results, it is deemed that there are severe effects on stress due to voice disorders and that the administration of kudzu leaf extracts results in improvement in stress.
Assessment of the Water Quality of Jungnang Stream by Flow Conditions Using Load Duration Curve
Choi, Kyung-Wan ; Shin, Kyung-Yong ; Lee, Hyung-Jin ; Jun, Sang-Ho ;
Korean Journal of Environmental Health Sciences, volume 38, issue 5, 2012, Pages 438~447
DOI : 10.5668/JEHS.2012.38.5.438
Objective: The objective of this study was to suggest a method through which load duration curve was used to assess the achievement of water quality targets in accordance with the criteria for pollutant load depending on flow rate variation. Methods: The stage-discharge curve and flow duration curve of Jungnang Stream were deduced. Using water quality targets and measurement of the stream, the flow duration curve was also drawn. Based on these, the feasibility of achievement of water quality targets in respect to flow rate was assessed. Results: In terms of the load duration curve of the stream, it was observed that excess of criteria for concentrations of
and SS frequently occurred. On the other hand, when the flow rate was low, the concentrations of T-N and T-P exceeded the criteria. Conclusions: Through the load duration curve, the overall water quality of Jungnang Stream was understood. When the flow rate is high, management of point source of
and SS is needed to achieve water quality targets for Jungnang Stream. On the other hand, when the flow rate is low, the management of non-point source T-N and T-P is necessary to attain the water quality goal.
Behavior in the Environment of Hydrogen Fluoride
Shin, Ho-Sang ;
Korean Journal of Environmental Health Sciences, volume 38, issue 5, 2012, Pages 448~449
DOI : 10.5668/JEHS.2012.38.5.448