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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Korean Journal of Environmental Health Sciences
Journal Basic Information
Journal DOI :
Korean Society of Environmental Health
Editor in Chief :
Volume & Issues
Volume 30, Issue 5 - Dec 2004
Volume 30, Issue 4 - Nov 2004
Volume 30, Issue 3 - Sep 2004
Volume 30, Issue 2 - Jun 2004
Volume 30, Issue 1 - Mar 2004
Selecting the target year
Effects of Skin Permeation for Rat of Thioglycolic Acid
Korean Journal of Environmental Health Sciences, volume 30, issue 2, 2004, Pages 65~70
Hair is based upon the skin which enroll the body of high living animals and have multiple membrane structure. This study were used rats and carried out to find out the effects of commercial permanent wave products to skin which are composed of thioglycolic acid and bases. Results were as follows. Permanent wave penetrated to 3 hours later with steady state in skins and was not significant changeable after 20hr later. In case of neutralizer with thioglycolic acid lag time and permeability coefficient in healthy skin were 3.38hr and 0.96
/hr, in old skin were 3.14hr and 0.l28
/hr, and in wounded skin were 3.08hr and 0.157
/hr. In conclusion, lag time and permeability coefficient in old skin and wounded skin were faster than healthy skin. In vivo which was studied by general time and method of permanent wave. We found out that fine rinkle and rash of skin were changeable in the case of treating with permanent wave drugs than normal skin. Also, permanent wave drugs could induced rash and eruption at the skin by the naked eye.
The Reproductive Toxicity by Combined Treatment of Bisphenol A and Butyl Benzyl Phthalate During Gestation, Lactation Period in Rats
Korean Journal of Environmental Health Sciences, volume 30, issue 2, 2004, Pages 71~78
This study was performed to evaluate developmental and estrogenic activity of bisphenol A (BPA) and butyl benzyl phthalate (BBP) to the second generation of Sprague-Dawley rats ingested during gestational or lactational periods. Rats were given BPA 20
/kg BBP 100mg/kg of pregnancy or lactation periods. Maternal body weight and neonatal body weight were recorded. The rats were sacrificed on day 21 after birth. Reproductive organs of dam and neonate were utilized for receptor binding assay. The plasma concentrations of BPA and MBep, one of the major metabolites of BBP were analyzed with HPLC. The co-administration of BPA and BBP induced slow weight gain compared with single administration in dams. Also, such mixture induced low neonatal body weights in next generation. The dams treated with BPA and BBP during lactational periods showed significant organ weight changes in liver and spleen. The dams exposed during lactational periods showed significant organ weight changes not only in liver and spleen but also in kidney, uterus and ovary. The F1 female rats exposed during lactation periods showed significant organ weight changes in liver, spleen, ovary. The F1 male rats showed significant organ weight changes in liver, kidney, epididymis, vesicular glands, prostate. However, no clear synergistic effects of BPA and BBP were noted. There was no significantly different ER
expression pattern between control and treated groups. However, ER
expression were increased in F1 male testis and female uterus. PI male showed distinct ER
expression, especially in the group of lactational combined exposure. Synergistic ER
expression was found by combined treatment of BPA and BBP. We could not find any evidences of synergistic effects on BPA and/or BBP combined administration on dams and their fetuses, except in ER
expression of F1 male.
Reaction Conditions for Laccase Catalyzed Degradation of Bisphenol A
Kim, Young-Jin ;
Korean Journal of Environmental Health Sciences, volume 30, issue 2, 2004, Pages 79~83
The oxidative degradation of BPA with laccase from Trametes versiclor was conducted in a closed, temperature controlled system containing acetate buffer for pH control. The effects of medium pH, buffer concentration, temperature and mediator on degradation of BPA were investigated. The inactivation of the enzyme by temperature and reaction product was also studied. The optimal pH for BPA degradation showed about 5. Buffer concentration did not affect BPA degradation. On the other hand, the enzyme stability was higher at low concentration buffer(25 mM). Temperature rise increased the degradation rate of BPA up to 45
. The valuable mediator of laccase for BPA was ABTS. Elevated temperature and reaction product irreversibly inactivated the enzyme.
A Study on the Biological Organic, Nitrogen and Phosphorus Removal in Sequencing Batch Biofilm Reactor
Korean Journal of Environmental Health Sciences, volume 30, issue 2, 2004, Pages 84~91
Biological nutrient removal(BNR) from wastewater was performed by adopting various process configurations. The simultaneous biological organics, phosphorus and nitrogen removal of synthetic wastewater was investigated in a sequencing batch biofilm reactor (SBBR). The other reactor was operating as a reference, without biofilm being added. The cycling time in SBR and SBBR was adjusted at 12 hours and then certainly included anaerobic and aerobic conditions. Both systems has been operated with a stable total organic carbon(TOC), nitrogen and phosphorus removal performance for over 90 days. Average removal efficiencies of TOC and total nitrogen were 83% and 95%, respectively. The nitrification rate in SBR was higher than that in SBBR. On the contrary, the denitrification rate in SBBR was higher than that in SBR. The phosphorus release was occurred in SBBR, however, not in SBR because of the inhibition effect of NO
Improvement of Indoor Air Quality by Coating of Indoor Materials of
Korean Journal of Environmental Health Sciences, volume 30, issue 2, 2004, Pages 92~97
Three methods for VOCs emissions control in indoor air are reduction at the source, ventilation between indoor and outdoor, and removal. The best alternative should be to replace highly emitting sources with sources having low emissions, but the pertinent information on VOCs is not always available from manufactures. Other ways of improving indoor air quality are needed. It is to increase the outside fresh-air flow to dilute the pollutants, but this method would generally provide only a dilution effect without destruction in residence. An ideal alternative to existing technologies would be a chemical oxidation process able to treat large volumes of slightly contaminated air at normal temperature without additional oxidant such as ozone generator and ion generator. Photocatalytic oxidation(PCO) represents such a process. It is characterized by a surface reaction assisted by light radiation inducing the formation of superoxide, hydroperoxide anions, or hydroxyl radicals, which are powerful oxidants. In comparison with other VOCs removal methods, PCO offers several advantages. The purpose of this study was to explore the possibilities for photocatalytic purification of slightly contaminated indoor air by using visible light such as flurescent visible light(FVL). In this study, a PCO of relatively concentrated benzene using common FVL lamps was investigated as batch type and total volatile organic compounds(TVOCs) using a common FVL lamp and penetrated sun light over window. The results of this study shown the possibility of TiO
photocatalyst application in the area of indoor air quality control.
A Study on the Drinking Water Quality and Contamination Sources in a Rural Area
Korean Journal of Environmental Health Sciences, volume 30, issue 2, 2004, Pages 98~103
To evaluate the quality of drinking water and contamination sources in a rural community, this study was carried out on the summer of 2003 at Shin-Dong Myun, Chun-Cheon, Gang-Won province. Seventy three drinking water samples were collected from three different types of water supply systems. Sources of contamination were identified and the public perception of water quality area were evaluated. The findings of this study are as follows; Drinking water was mainly obtained from Local Water and Simple Piped Water Supply Systems, and pollution sources varied over the study area. Most of residents (＞63%) were satisfied with the quality of drinking water and could not identify any contamination sources. Corresponding to this perception, measured water quality parameters generally met the Drinking Water Quality Standards (＞64%). However, approximately 35.6% of samples exceeded the regulation for Nㅒ
N, coliform, and general bacteria. The water quality was significantly different among the three water supply systems, and between the potentially contaminated areas and the rest of the areas (p＜0.05). In the potentially contaminated areas, the levels of coliform and general bacteria contamination were significantly higher than the rest of the areas (p＜0.05). The coliform and general bacteria values of Simple Piped Water were significantly higher than Own Piped Water＇s, and the NO
N values of Own Piped Water were significantly higher than those of water＇s (p＜0.05). Based on this study, NO
N, coliform, and general bacteria were identified as a major problem of drinking water. To regularly manage drinking water supply systems, to identify contamination sources, and to add drainage systems are required in the study area.
The Effects of pH on Early Embryo Development of Sea Urchins
Korean Journal of Environmental Health Sciences, volume 30, issue 2, 2004, Pages 104~107
This study was conducted to evaluate the effects of pH, using gametes, embryos and early development system of three sea urchins species, Hemicentrotus pulcherrimus, Anthocidaris crassispina and Scaphechinus brevis. As the result of performing effects of pH on early embryo development, the conditions of appropriate pH on formation of normal pluteus were pH 7.0-8.0 for H. pulcherrimus, A. crassispina and S. brevis. Otherwise, the conditions of pH 5.0, pH 6.0, pH 9.0 and pH 10.0 damaged the development of early embryos of each testing animal moderately or strongly.
Development of Observation Equipment for Soil Microorganisms Using Vision System
Korean Journal of Environmental Health Sciences, volume 30, issue 2, 2004, Pages 108~114
Observation of microorganisms collected from contaminated soils has been mainly conducted by using microscopy. Microscopic measurement is occupied an important part of the microorganism experiment, and is used as an important tool to count microorganisms as well as to observe cellular form and mode of life in the field of soil microbe observation. In general, observation equipments for soil microbes consist of electron microscope, camera, frame grabber (image acquisition baud), and image analysis software. Because image analysis software should be linked with frame grabber most equipments have to be imported as the package form. Therefore, the observation system is very expensive and difficult to be operated. In this study, soil microbes＇ observation equipment with the vision system which is easy operated and cheaper than imported one was developed and tested. The efficiency of image capturing and data aquisition with developed frame grabber and software in this experiment was good enough to analyze the image of soil microorganism.
Differential Pulse Voltammetric Determination of Copper(II) Using Glassy Carbon Electrodes Modified with Nafion-DTPA-Glycerol
Korean Journal of Environmental Health Sciences, volume 30, issue 2, 2004, Pages 115~122
A glassy carbon electrode(GCE) modified with nafion-DTPA (diethylene triamine-pentaacetic acid)-glycerol is used for the highly selective and sensitive determination of a trace amount of Cu(II). Various experimental parameters, which influenced the response of nafion-DTPA-glycerol modified electrode to Cu(II), are optimized. The Copper(II) is accumulated on the electrode surface by the formation of the complex in an open circuit, and the resulting surface is characterized by medium exchange, electrochemical reduction, and differential pulse voltammetry(DPV). The electrochemical response is evaluated with respect to concentration of modifier, pH and preconcentration time, quiet time, copper(II) concentration, and other variables. A linear range is obtained in the concentration range 1.0
MCu(II) with 7 min preconcentration time. The detection limit(3s) is as low as 2.36
M (1.50 ppb).
and Air-borne Metallic Elements in Asan and Seoul
Korean Journal of Environmental Health Sciences, volume 30, issue 2, 2004, Pages 123~132
The purpose of this study was to characterize background mass concentration of PM
and metallic composition from September 2001 to August 2002 in comparison with Asan and Seoul. Annual mean of PM
concentrations in Asan and Seoul were 47.98 and 75.33
/㎥, respectively. The concentrations of PM
were highest in spring season in both cities. The concentrations of measured metals except for As and Pb in Asan were higher than those in Seoul. Yellow dust could affect the mass and metals concentrations of measured PM
in Asan and Seoul. Relationship between measured metals concentrations showed that Si and Fe were associated with natural sources such as soil. Pb, Cu and Zn were closely related to urban anthropogenic sources such as fuel combustion. Especially, relationship between metals showed different association during yellow dust. Proper management for PM
will need in Asan, considered the concentrations of metallic elements in PM
in Asan were relatively higher than those in Seoul.se in Seoul.
Fundamental Kinetics of Cephradine Oxidation in Supercritical Water
Korean Journal of Environmental Health Sciences, volume 30, issue 2, 2004, Pages 133~139
The objective of this study was to investigate the destruction efficiency and to determine the fundamental parameters of oxidation kinetics under the supercritical water(SCW) condition. Target material was cephradine, toxic and antibiotic material, in the pharmaceutical wastewater. For this purpose, the effect of reaction temperature and oxidant were investigated on the destruction efficiency of cephradine. And the oxidation kinetics of cephradine was derived by using a empirical power-law model. The experiment was carried out in a cylindrical batch reactor made of Hastelloy C-276 which was endurable high temperature and pressure. The destruction efficiency of cephradine increased with increment of the temperature and reaction time. Also the type of oxidants was effected and oxidants(Air and
) were enhanced the destruction efficiency. The global oxidation kinetics for cephradine has led to two rate expressions according to type of oxidant. - In the presence of air oxidant: Rate=k.
sec. Ea=63.25 kJ/mole) - In the presence of
oxidant : Rate=kㆍ
/sec. Ea=47.65 kJ/mole)ole))
A Study on the Acute Effects of Eine Particles on Pulmonary Function of Schoolchildren in Beijing, China
Korean Journal of Environmental Health Sciences, volume 30, issue 2, 2004, Pages 140~148
To evaluate the acute effects of fine particles on pulmonary function, a longitudinal study was conducted. This study was carried out for the schoolchildren (3rd and 6th grades) living in Beijing, China. Each child was provided with a mini-Wright peak flow meter and a preformatted health symptom diary for 40 days, and was trained on their proper use. Participants were instructed to perform the peak flow test three times in standing position, three times a day (9 am, 12 pm, and 8 pm), and to record all the readings along with the symptoms (cold, cough, and asthmatic symptoms) experienced on that day. Daily measurement of fine particles (PM
) was obtained in the comer of the playground of the participating elementary school for the same period of this longitudinal study. The relationship between daily peak expiratory flow rate (PEFR) and fine particle levels was analyzed using a mixed linear regression models including gender, height, the presence of respiratory symptoms, and daily average temperature and relative humidity as extraneous variables. The total number of students participating in this longitudinal study was 87. The range of daily measured PEFR was 253-501
/min. In general, the PEFR measured in the morning was lower than the PEFR measured in the evening (or afternoon) on the same day. The daily mean concentrations of PM
over the study period were 180.2
/㎥ and 103.2
/㎥, respectively. The IQR (inter-quartile range) of PM
/㎥ and 58.0
/㎥. During the study period, the national ambient air quality standard of 150
/㎥ (for PM
) was exceeded in 23 days (57.5%). The analysis showed that an increase of 1
/㎥ of PM
corresponded to 0.59
/㎥ increment of PM
. Daily mean PEFR was regressed with the 24-hour average PM
) levels, weather information such as air temperature and relative humidity, and individual characteristics including gender, height, and respiratory symptoms. The analysis showed that the increase of fine particle concentrations was negatively associated with the variability in PEFR. The IQR increments of PM
(at 1-day time lag) were also shown to be related with 1.54
/min (95% Confidence intervals: 0.94-2.14) and 1.56
/min (95% CI: 0.95-2.16) decline in PEFR.R.ine in PEFR.ine in PEFR.
Effect of pH on Continuous Hydrogen Fermentation
Lee, Young-Joon ;
Korean Journal of Environmental Health Sciences, volume 30, issue 2, 2004, Pages 149~153
The influences of pH on hydrogen production were also investigated over the pH range from 4.1 to 8.0 at HRT 10 hours. The hydrogen content for the produced gas was changed from 41 to 71% with corresponding pHs throughout this experiment. The produced hydrogen/carbon dioxide ratio was not vary significantly up to 6.0, then steepenly increased with increases in the pH. The maximal hydrogen yield was found to be 3.16
/g sucrose at pH 5.0. Acetate production yield increased with increased pH, but butyrate production yield decreased with increased pH. Biomass yield increased with increased pH.
A study on Characteristics of Airborne Dusts in Seoul Subway Stations
Korean Journal of Environmental Health Sciences, volume 30, issue 2, 2004, Pages 154~160
The purpose of this study was to evaluate airborne concentrations and characteristics of TSP, IPM, TPM and RPM in Seoul subway stations. Sampling was performed at 14 stations from April 11 to 29, 2002. Size-selective dust concentrations and metal concentrations were measured by gravimetric method and ICP-AES, respectively. The geometric mean of TSP, IPM, TPM and RPM concentrations in Seoul subway stations were 176
/㎥ and 104
/㎥, respectively. Dust concentrations in pathway were the highest and those in lobby were the lowest. The size distribution of dusts was significantly different by location of collection. When the deposition rate into pulmonary gas exchange region was estimated by size distribution, the deposition rate of dust collected from platform was higher than those of dust collected from lobby and pathway. The lower the basement levels were, the higher the deposition rates of dusts into tracheobronchial region and gas exchange region were. Copper and iron concentrations measured in platform higher were than those in other areas.
Impact of Dissolved Wastewater Constituents on Laccase-Catalyzed Treatment of Bisphenol A
Kim, Young-Jin ;
Korean Journal of Environmental Health Sciences, volume 30, issue 2, 2004, Pages 161~166
The impact of dissolved wastewater constituents on the treatment of synthetic bisphenol A (BPA) solutions was investigated under a variety of reaction conditions. The laccase enzyme from Trametes vesicolor was used for the BPA treatment. The constituents studied included various inorganic salts, organic compounds and heavy metal ions. BPA degradation was inhibited by sulfate, thiosulfate, sulfide, nitrite, and cyanide ions at 25 mg/
, 25 mg/
, and 2.5 mg/
, respectively. However, the inhibitive effects of sulfide and sulfite on BPA degradation were diminished by additional aeration to oxidize them. Formaldehyde significantly reduced the rate of BPA degradation at 1.0% among organic compounds studied. Among heavy metal ions tested, Fe(II) substantially suppressed BPA removal at 1 mM. MgCl
exhibited great inhibition of BPA degradation at 25mM.
Manufacture and Characterization of Interlocking Block Using Incineration Ash of Dyeing Wastewater Treatment Sludge
Korean Journal of Environmental Health Sciences, volume 30, issue 2, 2004, Pages 167~172
In this study, we carried out the research for the recycling potential of the dyeing wastewater treatment sludges as construction materials. The incineration ash of sludges were solidified as interlocking block in condition of sludge/cement ratio 2.5%, 5.0% and 10%, respectively. Those interlocking blocks were cured for 3days, 7days and 28days in ambient air condition, respectively. The results of this research were summarized as follows: The dyeing wastewater treatment sludges was below the Korea Leaching Limit. After incineration, the ash was manufactured as interlocking block. Bendable strength over 50kg
suitable for interlocking block was obtained only when the sample was cured for 7days at sludge/cement ratio 2.5% and 5.0%. Hygroscopic ratio of interlocking block was above the Korea Industry Standard. We think that recycling of the incineration ash from dyeing wastewater treatment sludges to interlocking block will have high potential possibility.y.
Studies on the Food Hygiene & Safety Knowledge, Attitudes, and Practices of Kitchen Employees in School Food-Service Programs-Part 1
Korean Journal of Environmental Health Sciences, volume 30, issue 2, 2004, Pages 173~183
The purpose of the present study was to assess food hygiene and safety knowledge, attitudes, and practices of food-service personnel in school food-service programs and to find factors affecting their knowledge, attitudes, and practices. A self-administered questionnaire was offered to a random sample of 40 kitchen employees in elementary schools in one region of Korea, with 37 completing the survey, a response rate of 92.5%. The survey was carried out over a two-month period (April-May, 2001). Knowledge score of the employees was high with a mean/standard deviation of 4.75/0.32 on a 5.0-point scale. They had significantly lower attitude score (4.55
0.33) and practice score (4.55
0.45) compared to the score of knowledge (p＜0.05). Logistic regression analysis showed that (1) the employees＇ education level and work experience in school food-service programs affected their knowledge, (2) age, level of living, monthly income, and housing type affected their attitudes, and (3) monthly income, level of living, housing type, and work experience in school food-service programs affected their practices. Pearson＇s correlation analysis confirmed that the knowledge and attitude scores were significantly correlated (r=0.598, p＜0.001). The results indicate that the knowledge, attitude, and practice levels of the employees regarding the food hygiene and safety were better than expected, however, the results suggest a need for the adoption of approaches which take account of socio-economic and environmental influences on behavior to improve and maintain their practice level. The food-handling practices of school food-service employees need to be monitored routinely in order to ensure that safe food is served to our school children.