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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Journal of Korean Society of Occupational and Environmental Hygiene
Journal Basic Information
Journal DOI :
Korean Industrial Hygiene Association
Editor in Chief :
Volume & Issues
Volume 25, Issue 4 - Dec 2015
Volume 25, Issue 3 - Sep 2015
Volume 25, Issue 2 - Jun 2015
Volume 25, Issue 1 - Mar 2015
Selecting the target year
Usage of Filtering-facepiece Masks for Healthcare Workers and Importance of Fit Testing
Han, Don-Hee ;
Journal of Korean Society of Occupational and Environmental Hygiene, volume 25, issue 3, 2015, Pages 245~253
DOI : 10.15269/JKSOEH.2015.25.3.245
Objectives: One aim of the study is to compare filtering facepiece masks for healthcare workers between Korea and other countries. The other is to emphasize the importance of fit testing for these masks using an analysis of previous research. Materials: An extensive literature review was performed by searching a number of websites and existing studies. Results: KF94 and KF99 masks certified by the Korean CDC are suitable for healthcare workers as filtering facepiece masks. The standards for these respirators are similar to FFP2 and FFP3 of EN 143 and 149. The performance, such as filtering efficiency, is almost the same between KP94 and N95. It was found that fit testing of respirators for healthcare workers was important to reduce infection risk. Conclusions: KF94 should be emphasized as filtering facepiece masks for healthcare workers rather than N95. Even though Korea has no fit testing regulations, implementing fit testing in healthcare settings is strongly recommended to decrease infection risk.
Selection of Target Materials for GLP Genotoxic Tests by Searching the Mutagenicity Information of Chemicals by Occupational Safety and Health Act
Rim, Kyung-Taek ; Lim, Cheol-Hong ; Ahn, Byung-Joon ;
Journal of Korean Society of Occupational and Environmental Hygiene, volume 25, issue 3, 2015, Pages 254~284
DOI : 10.15269/JKSOEH.2015.25.3.254
Objectives: There is a requirement to select target materials for mutagenicity(Genotoxicity) testing, so we determined to set the test priorities of them by searching the related database. Methods and Results: We searched a number of databases to find information on mutagenicity tests with chemicals under the Occupational Safety and Health Act(OSH Act), such as KOSHANET, National Toxicology Program(NTP), European Chemicals Agency(ECHA), US National Library of Medicine(NLM), and Genetic Toxicology Data Bank(GENE-TOX), as well as ChemIDplus webpage, and presented the information. Also we anticipated their hazards with ACToR sites to confirm the 58 mutagenicity(Genotoxicity) tests we will perform. Conclusions: We presented target materials for mutagenicity testing with specific GLP tests consisting of reverse mutation(Ames), chromosomal aberration and micronucleus test.
A Study on Important Factors for Chemical Risk Management in Small & Medium Enterprises
Kim, Shinbum ; Choi, Youngeun ; Chung, Taejin ; Lee, Junghwa ; Che, Simon ; Kang, Sungjoo ; Choi, Jaeyoung ; Choi, Jongkyung ; Kim, Sungmin ; Lim, Jongho ; Min, Kyungdoo ; Youn, Kanwoo ; Kim, Hyun-Ock ;
Journal of Korean Society of Occupational and Environmental Hygiene, volume 25, issue 3, 2015, Pages 285~293
DOI : 10.15269/JKSOEH.2015.25.3.285
Objectives: This study was conducted in order to ascertain the important factors for SMEs in managing the risks of chemicals and to suggest a government role in strengthening the responsibility of small and medium enterprises(SMEs) as employers. Methods: About 100 enterprises were surveyed in Incheon. A questionnaire for employers and walk-through surveys by occupational hygienists were performed at each enterprise. Results: The results showed that most employers thought chemicals were not hazardous but chemical management was needed. When employers determine how to manage chemicals, they rely heavily on personal experience and rather less on information from the government or experts. However, if employers think the chemicals are hazardous, they do more to manage the chemicals. Conclusions: When employers think chemicals are hazardous, risk assessment would be an effective tool to control chemical hazards in SMEs. Employers' position on chemical hazards is very important. Since the government is the initiator, it is the government who develops messages for SMEs, such as "Chemicals are hazardous and management can reduce the risk of chemicals." Governmental messages can play an invaluable role in strengthening the responsibility of SME employers to manage chemical hazards.
Physicochemical Characterization of Powder Byproducts Generated from a Metallization Process and Its 1st Scrubber in the Semiconductor Industry
Choi, Kwang-Min ; Jung, Myung-Koo ; An, Hee-Chul ;
Journal of Korean Society of Occupational and Environmental Hygiene, volume 25, issue 3, 2015, Pages 294~300
DOI : 10.15269/JKSOEH.2015.25.3.294
Objectives: The aim of this study is to identify physicochemical properties such as chemical composition, size, shape and crystal structure of powder byproducts generated from a metallization process and its 1st scrubber in the semiconductor industry. Methods: Powder samples were collected from inner chambers during maintenance of the W-plug process equipment (using tungsten hexafluoride as a precursor material) and its 1st scrubber. The chemical composition, size and shape of the powder particles were determined by field emission scanning electron microscopy (SEM) and transmission electron microscopy (TEM) equipped with an energy dispersive spectroscope (EDS). The crystal structure of the powders was analyzed by X-ray diffraction (XRD). Results: From the SEM-EDS and TEM-EDS analyses, O and W were mainly detected, which indicates the powder byproducts are tungsten trioxide (
), whereas Al, F and Ti were detected as low peaks. The powder particles were spherical and nearly spherical, and the particle size collected from the process equipment and its 1st scrubber showed 10-20 nm (agglomerates: 55-90 nm) and 16-20 nm (agglomerates: 80-120 nm) as primary particles, respectively. The XRD patterns of the yellow powder byproducts exhibit five peaks at
which correspond to the (200), (220), (222), (400), and (420) planes of cubic
. Conclusions: We elucidated the physicochemical characteristics of the powder byproducts collected from W-plug process equipment and its 1st scrubber. This study should provide useful information for the development of alternative strategies to improve the working environment and workers' health.
Exposure status of welding fumes for operators of overhead traveling crane in a shipyard
Lee, Kyeongmin ; Kim, Boowook ; Kwak, Hyunseok ; Ha, Hyunchul ;
Journal of Korean Society of Occupational and Environmental Hygiene, volume 25, issue 3, 2015, Pages 301~311
DOI : 10.15269/JKSOEH.2015.25.3.301
Objectives: Operators of overhead traveling crane in a ship assembly factory perform work to transmit large vessel blocks to an appropriate working process. Hazardous matters such as metal dusts, carbon monoxide, carbon dioxide, ozone, loud noise and fine particles are generated by variable working activities in the factory. The operators could be exposed to the hazardous matters during the work. In particular, welding fumes comprised of ultra fine particles and heavy metals is extremely hazardous for humans when exposing a pulmonary through respiratory pathway. Occupational lung diseases related to welding fumes are increasingly on an upward tendency. Therefore, the objective of this study is to assess properly unknown occupational exposure to the welding fumes among the operators. Methods: This study intended to clearly determine an equivalence check whether or not chemical constituents and composition of the dusts, which existed in the driver's cab, matched up with generally known welding fumes. Furthermore, computational fluid dynamics program(CFD) was used to identify a ventilation assessment in respect of a contamination distribution of welding fumes in the air. The operators were investigated to assess personal exposure levels of welding fumes and respirable particulate. Results: The dust in an operation room were the same constituents and composition as welding fumes. Welding fumes, which caused by the welding in a floor of the factory, arose with an ascending air current up to a roof and then stayed for a long time. They were considered to be exposed to the welding fumes in the operation room. The personal exposure levels of welding fumes and respirable particulate were 0.159(n=8, range=0.073-0.410)
and 0.138(n=8, range=0.087-0.178)
, respectively. They were lower than a threshold limit value level(
) of welding fumes. Conclusions: These findings indicate that an occupational exposure to welding fumes can exist among the operators. Consequently, we need to be keeping the operators under a constant assessment in the operator process of overhead traveling crane.
Analytical Characteristics of GC/MS and HPLC according to the Concentration Distribution of PAHs
Hong, Jwa-Ryung ; Choi, Kwang-Min ;
Journal of Korean Society of Occupational and Environmental Hygiene, volume 25, issue 3, 2015, Pages 312~321
DOI : 10.15269/JKSOEH.2015.25.3.312
Objectives: The purpose of this study was to determine the best method to analyze PAHs at extremely low concentrations. To this end, 16 PAHswere analyzed simultaneously by GC/MS, HPLC/FLD and HPLC/UVD, and the analytical characteristics of HPLC and GC/MS were compared. Methods: This study was conducted by GC/MS and HPLC/FLD/UVD, and evaluated linearity, precision and detection limit. Standard solutions were prepared for 21 samples in the range of
and the samples were divided into four groups. All samples were made in three sets and analysis was replicated seven times. Results: Sixteen PAHs could be simultaneously separated by HPLC and GC/MS, and the adequate equipment was HPLC/FLD. The retention times by HPLC were shorter than GC/MS, and HPLC had better separation for most PAHs than GC/MS. The peaks of naphthalene and naphthalene-D8 partially overlapped for GC/MS. HPLC/FLD had a 20-2000 times lower limit of detection than GC/MS and UVD. However FLD was not adequate for analyzing acenaphthylene because it has too low a fluorescence quantum yield to be detected. The precision of HPLC/FLD/UVD and GC/MS showed less than 20% at
PAHs and when the concentration was higher, the coefficient of variation was decreased. HPLC/FLD was better for the overall detection of limits. Conclusions: The results indicate that the HPLC/FLD method has good linear range, precision and a detection of limits from
for all 16 PAHs. This study contributes to providing useful data for analysis technology and can be applied to occupational exposure measurement for PAHs in workplaces.
The oral dose toxicity test and skin irritation test of eco-friendly plasticizer using crude glycerol derived
Kang, Soo-Jung ; Kim, Heeyoung ; Park, Sangwon ; Sim, Eunyoung ; Kim, Jinhwan ;
Journal of Korean Society of Occupational and Environmental Hygiene, volume 25, issue 3, 2015, Pages 322~327
DOI : 10.15269/JKSOEH.2015.25.3.322
Objectives: The major objective of this study is the oral dose toxicity test and skin irritation test of eco-friendly plasticizer using crude glycerol derived from the biodiesel process. Methods: Glyceroldiacetate laurate(GDL) was synthesized from glycerol monolaurat(GML) and acetic acid. The synthesis of the GDL plasticizer was measured with nuclear magnetic resonance spectroscop(NMR) and FT-IR(Fourier Transform Infrared Spectrometer). To provide information on the safety of GDL, we carried out an oral dose toxicity test for GDL in Sprague-Dawley rats. Also, we carried out a skin irritation test for GDL in New Zealand White rabbits. Results: The oral dose toxicity test in Sprague-Dawley rats showed that GDL is a non-toxic material. The result of the skin irritation test on New Zealand White rabbits showed that GDL is non-irritating. Conclusions: From the results of oral dose toxicity test and skin irritation test, we concluded that the developed plasticizer showed excellent eco-friendly property. Based on our results, we confirmed the development of an eco-friendly non-phthalate plasticizer. Applicability for PVC toys and food and drug packaging materials was found.
A Study on the Distribution of VOC Concentrations by Attachment Position of Air Samplers for Working Environment Measurement
Kwon, Yung-Gyu ; Won, Jung Il ; Jang, Hyung Seok ; Sim, Sang-hyo ;
Journal of Korean Society of Occupational and Environmental Hygiene, volume 25, issue 3, 2015, Pages 328~337
DOI : 10.15269/JKSOEH.2015.25.3.328
Objectives: The purpose of this study is to investigate differences in concentration according to the position at the left or right shoulder within a 30 cm of radius of workers' respirators and provide basic data for the establishment of an industrial health policy. Methods: Personal samples were collected from a total of 65 workers from 27 manufacturing firms in South Gyeongsang-do Province from November 5, 2011 to December 30, 2012 after classifying the laborers into left- and right-side groups. The organic compound samples were collected and analyzed in accordance with the NIOSH Manual of Analytical Methods (NMAM) 1501. Results: In terms of the concentration of organic compounds collected from both left and right shoulders at the position of workers' respirators, isobutyl acetate was the highest with 145 ppm at the left shoulder, followed by ethyl acetate (133.5 ppm) and toluene (38.13 ppm). At the right shoulder, on the contrary, ethyl acetate (149.3 ppm) was the highest, followed by toluene (46.26 ppm), xylene (29.63ppm) and isopropyl alcohol (28.06 ppm). Overall, the right shoulder was higher than the left shoulder in terms of concentrations. Conclusions: For the measurement of the working environment, workers' personal samples should be collected at the place closest to the respirator. In terms of the reduction of error, the attachment of two sample media is expected to reduce errors in exposure assessment.
Urinary Cadmium Concentration of Residents around Industrial Complex in Gwangyang and Yeosu
Park, Heejin ; Kang, Tack-Shin ; Lee, Jong-Dae ; Kim, Geun-Bae ; Yu, Seungdo ; Jang, Bong-Ki ; Lee, Jong-Wha ; Son, Bu-Soon ;
Journal of Korean Society of Occupational and Environmental Hygiene, volume 25, issue 3, 2015, Pages 338~345
DOI : 10.15269/JKSOEH.2015.25.3.338
Objectives: The objective of this study was to evaluate the distribution of urine cadmium levels of residents in the surrounding areas of an industrial complex. Methods: During the period of three month from August to October 2012, informed consent was obtained from a total of 362 residents in Kwangyang and Yeosu. We collected urine sample from all subjects and their demographic characteristics, including alcohol drinks and smoking habits, using a questionnaire. The urine samples were analyzed using atomic absorption spectrometer. Results: The urinary cadmium geometric mean concentration of total participants was
. The results of this study showed that higher urine cadmium levels were observed in females and some subjects with a higher level of education level and a lower BMI. Also, those subjects who preferred to take vegetables and took fish 3 days before urine sampling procedure revealed higher urine cadmium concentrations. The urine cadmium concentrations of subjects in the exposed area(
) were significantly higher than those in the control area(
). Conclusions: An additional study is needed to assess health risks of residents in the vicinity of environment-unfriendly areas, coupled with endeavors to examine possible heavy metals contamination factors that may affect the human body.
Mortality and Morbidity Based on Secondary Data Analysis for Respiratory System Diseases among Residents around Ansim, Daegu, Korea
Min, Young-Sun ; Lee, Kwan ; Lim, Hyun-Sul ; Lee, Duk-Hee ; Hong, Nam Soo ; Kim, Geun-Bae ;
Journal of Korean Society of Occupational and Environmental Hygiene, volume 25, issue 3, 2015, Pages 346~354
DOI : 10.15269/JKSOEH.2015.25.3.346
Objectives: This study was conducted to evaluate the changes and regional differences of mortality and morbidity particularly respiratory system diseases in the area of exposure to coal dust(Ansim area, Dong-gu, Daegu). Methods: The authors analyzed secondary data(cancer registration data, mortality data, and health insurance data) for respiratory system diseases. We calculated age standardized incidence ratio(SIR), mortality ratio(SMR), and health care utilization ratio(SHR) using those data. Results: There were no significant differences between Ansim area(or Dong-gu, Daegu) and the control area for cancer registration data and mortality data. In the results for the health insurance data, significant increased SHR in asthma was observed compared to the control area. Conclusions: Although confounders such as selection bias were not clearly ruled out, our findings reveal increased asthma SHR in the area of exposure to coal dust. Further prospective studies are required to clarify the increasing respiratory disease due to exposure to coal dust.
A Study on the Results of Questionnaire Survey and Health Examination for Respiratory Disease among Residents in Briquette Fuel Complex in Ansim, Daegu
Lee, Kwan ; Lim, Hyun-Sul ; Kim, Min-Gi ; Min, Young-Sun ; Lee, Young-Hyun ; Kim, Sung-Woo ; Choi, Hye-Sook ; Ahn, Yeon-Soon ; Sakong, Joon ; Yu, Seung-do ; Kim, Geun-Bae ; Yoon, Mi-Ra ;
Journal of Korean Society of Occupational and Environmental Hygiene, volume 25, issue 3, 2015, Pages 355~365
DOI : 10.15269/JKSOEH.2015.25.3.355
Objectives: This study was conducted to better understand the relationship between health effects and exposure to dusts from a briquette fuel complex in Ansim, Daegu, Korea. Methods: The subjects of this study consisted of 2,980 persons over 40 years old who had lived 20 years or more around a briquette fuel complex in Daegu. We conducted a questionnaire survey, and chest radiography was performed. In addition, chest computed tomography(CT) (335 cases) and pulmonary function test(PFT) (658 cases) were done. Pneumoconiosis was diagnosed if one of three radiologists determined(or suspected) pneumoconiosis. We also conducted in-depth interviews for pneumoconiosis cases. We defined the exposed group as subjects residing within a 500 meter radius from the walls of the briquette fuel complex, and the others were defined as the control group. Results: Subjects in the exposed and control groups are respectively 715(24%) and 2,265 cases(76%). Major respiratory symptoms in the exposed group such as sputum, dyspnea, chest tightness and wheezing were significantly higher than in the control group. By chest radiography, 173 cases of pneumoconiosis or suspicious pneumoconiosis were detected. By PFT, 62 cases(29.5%) of chronic obstructive pulmonary disease(COPD) among 210 asymptomatic subjects were detected. Finally, by chest CT we concluded 28 cases to be pneumoconiosis, and eight cases among them proved to be pneumoconiosis by environmental exposure. Conclusions: Through this study, we concluded that health outcomes such as respiratory symptoms, pneumoconiosis, and COPD were caused by continuous exposure to dusts from the briquette fuel complex. Policies to reduce environmental exposure are needed, and cases of environmental disease should be intensively followed up by the government.
Exposure Assessments of Environmental Contaminants in Ansim Briquette Fuel Complex, Daegu(I) - Effect zone of environmental pneumoconiosis and fugitive dust -
Jung, Jong-Hyeon ; Oh, In-Bo ; Phee, Young-Gyu ; Nam, Mi-Ran ; Hwang, Mi-Kyoung ; Bang, Jin-Hee ; Jeon, Soo-Bin ; Lee, Sang-sup ; Yu, Seung-do ; KimS, Byung-Seok ; Yoo, Seok-Ju ; Lee, Kwan ; Lim, Hyun-Sul ;
Journal of Korean Society of Occupational and Environmental Hygiene, volume 25, issue 3, 2015, Pages 366~379
DOI : 10.15269/JKSOEH.2015.25.3.366
Objectives: The objective of this study is to assess airborne particulate matter(PM) pollution and its effect on health of residents living near Ansim Briquette Fuel Complex in Daegu metropolitan region. Methods: The California Puff(CALPUFF) dispersion model, version 5.8, which can estimate the dispersion direction and range of airborn
was used to determine the possible areas affected by
pollutants emitted from Ansim briquette fuel complex. The CALPUFF modeling with 200 m grid-cell resolution was performed based on
emissions estimated from the amount of coal consumption in the fuel complex for four months in 2012. The Weather Research and Forecasting(WRF) fields were processed using CALMET to produce CALPUFF-ready meteorological inputs. Also, the distance from Ansim Briquette Fuel Complex to the residence of each environmental pneumoconiosis patient was analyzed. In addition, the affecting region of the pollutants emitted from briquette factories in Ansim Briquette Fuel Complex was determined. Results: CALPUFF modeling results showed that the highest concentrations of
were found near around the fuel complex. The modeled
distributions were characterized by significant decreases in concentration with distance from the complex. Seasonally, the highest concentration of
was calculated in October which was mostly due to the distinct variation of amount of emission. Additional modeling with the maximum
emission of about 88 tons per year in 1986 showed that the highest concentration in October was nearly increased by 8 times than the concentration modeled with emission of 2010. As a result of medical examination and interviews for the residents in Ansim Briquette Fuel Complex and its surroundings, 8 environmental pneumoconiosis patients were found. These patients do not have occupational exposure and history. These patients have lived 0.3~1.1 km area in Ansim Briquette Fuel Complex and its surroundings. Conclusions: Airborne particles emitted from Ansim Briquette Fuel Complex can contribute to significant increase in
concentration in residential areas near around the complex. Especially, the residents near fuel complex may exposed to the pollutants emitted from the factories in Ansim Briquette Fuel Complex.
Exposure Assessments of Environmental Contaminants in Ansim Briquette Fuel Complex, Daegu(II) - Concentration distribution and exposure characteristics of TSP, PM
, and heavy metals -
Jung, Jong-Hyeon ; Phee, Young-Gyu ; Lee, Jun-Jung ; Oh, In-Bo ; Shon, Byung-Hyun ; Lee, Hyung-Don ; Yoon, Mi-Ra ; Kim, Geun-Bae ; Yu, Seung-do ; Min, Young-Sun ; Lee, Kwan ; Lim, Hyun-Sul ;
Journal of Korean Society of Occupational and Environmental Hygiene, volume 25, issue 3, 2015, Pages 380~391
DOI : 10.15269/JKSOEH.2015.25.3.380
Objectives: The objective of this study is to assess airborne particulate matter pollution and its effect on health of residents living near Ansim Briquette Fuel Complex and its vicinities. Also, this study measured and analyzed the concentration of TSP,
, and heavy metals which influences on the environmental and respiratory disease in Ansim Briquette Fuel Complex, Daegu, Korea. Methods: In this study, we analyzed various environmental pollutants such as particulate matter and heavy metals from Ansim Briquette Fuel Complex that adversely affected local residents's health. In particular, we verified the concentration distribution and characteristics of exposure for TSP,
among particulate matters, and heavy metals(Cd, Cr, Cu, Mn, Ni, Pb, Fe, Zn, and Mg). In that regard, the official test method on air pollution in Korea for analysis of particulate matter and heavy metal in atmosphere were conducted. The large capacity air sampling method by the official test method on air pollution in Korea were applied for sampling of heavy metals in atmosphere. In addition, we evaluated the concentration of seasonal environmental pollutants for each point of residence in Ansim Briquette Fuel Complex and surrounding area. The sampling measured periods for air pollutants were from August 11, 2013 to February 21, 2014. Furthermore, we measured and analyzed the seasonal concentrations(summer, autumn and winter). Results: The average concentration for TSP,
by direct influence area at Ansim Briquette Fuel Complex were 1.7, 1.4 and 1.9 times higher than reference region. In analysis results of seasonal concentrations for particulate matter in four direct influence and reference area, concentration levels for winter were generally somewhat higher than concentrations for summer and autumn. The average concentrations for Cd, Cr, Mn, Ni, Pb, Fe, and Zn in direct influence area at Ansim Briquette Fuel Complex were
, respectively. In particularly, the average concentrations for Cd, Cr, Mn, Ni, Pb, Fe, and Zn in direct influence area at Ansim Briquette Fuel Complex were 1.9, 3.6, 2.1, 1.9, 1.4, 2.6, and 1.2 times higher than reference area, respectively. The continuous monitoring and management were required for some heavy metals such as Cr and Ni. Moreover, the average concentration in winter for particulate matter in direct influence area at Ansim Briquette Fuel Complex were generally higher than concentrations in summer and autumn. Also, average concentrations for TSP,
were from 1.5 to 2.0 times, 1.2 to 1.8 times, and 1.1 to 2.3 times higher than reference area, respectively. In results for seasonal atmospheric environment, TSP,
, and heavy metal concentrations in direct influence area were higher than reference area. Especially, the concentrations in C station were a high level in comparison with other area. Conclusions: In the results, some particulate matters and heavy metals were relatively high concentration, in order to understand the environmental pollution level and health effect in surrounding area at Ansim Briquette Fuel Complex. The concentration of some heavy metals emitted from direct influence area at Ansim Briquette Fuel Complex were relatively higher than reference area. In particular, average concentration for heavy metals in this study were higher than average concentrations in air quality monitoring station for heavy metal for 7 years in Deagu metropolitan region. Especially, the residents near Ansim Briquette Fuel Complex may be exposed to the pollutants(TSP,
, and heavy metals, etc) emitted from the factories in Ansim Briquette Fuel Complex.
Exposure Assessments of Environmental Contaminants in Ansim Briquette Fuel Complex, Daegu(III) - Contribution and distribution characteristics of air pollutants according to elemental carbon, crystalline silica, and stable isotope ratio -
Jung, Jong-Hyeon ; Phee, Young-Gyu ; Shon, Byung-Hyun ; Bae, Hye-Jeong ; Yang, Won-Ho ; Kim, Ji-Young ; Kim, Geun-Bae ; Choi, Jong-Woo ; Park, Sung-Jun ; Lee, Kwan ; Lim, Hyun-Sul ;
Journal of Korean Society of Occupational and Environmental Hygiene, volume 25, issue 3, 2015, Pages 392~404
DOI : 10.15269/JKSOEH.2015.25.3.392
Objectives: This study measured and analyzed the concentrations of crystalline silica, elemental carbon and the contribution ratio of pollutants which influence environmental and respiratory disease around the Ansim Briquette Fuel Complex in Daegu, Korea. Methods: We analyzed the crystalline silica and elemental carbon in the air according to FTIR(Fourier Transform Infrared Spectroscopy) and NIOSH(National Institute of Occupation Safety and Health) method 5040, respectively. In addition, lead stable isotopes, and carbon and nitrogen stable isotopes were analyzed using MC-ICP/MS(Multi Collector-Inductively Coupled Plasma/Mass Spectrometer), and IRMS(Isotope Ratio Mass Spectrometer), respectively. Results: The concentration of crystalline silica in the direct exposure area around the Ansim Briquette Fuel Complex was found to be
, but not to exceed the exposure standards of the ACGIH(American Conference of Governmental Industrial Hygienists). In the case of the autumn, the direct exposure area was found to show a level 2.5 times higher than the reference area, and on the whole, the direct exposure area was found to have a level 1.4 times higher than the reference area. The concentration of elemental carbon in the direct exposure area and in the reference area were found to be
, respectively. This study confirmed the contribution ratio of coal raw materials to residentially deposited dusts in the area within 500 meters from the Ansim Briquette Fuel Complex and the surrounding area with a stable isotope ratio of 24.0%(0.7-62.7%) on average in the case of carbon and nitrogen, and 33.9%(26.6-54.1%) on average in the case of lead stable isotopes. Conclusions: This study was able to confirm correlations with coal raw materials used by the Ansim Briquette Fuel Complex and the surrounding area. The concentration of some pollutants, crystalline silica, and elemental carbon emitted to the direct-influence area around the Ansim Briquette Fuel Complex were relatively higher than in the reference area. Therefore, we need to impose continuous and substantive reduction countermeasures in the future to prevent particulate matter and coal raw materials in the study area. It is time for the local government and authorities to prepare active administrative methods such as the relocation of Ansim Briquette Fuel Complex.
Associations between Physical Factors and Working Conditions and Occupational Injuries among Korean Workers
Park, Jung-hun ; Sung, Joo-hyun ; Sim, Chang-sun ; Lee, Chan-boo ; Park, Sang-jin ; Lee, Ji-ho ; Lee, Choong-ryeol ;
Journal of Korean Society of Occupational and Environmental Hygiene, volume 25, issue 3, 2015, Pages 405~417
DOI : 10.15269/JKSOEH.2015.25.3.405
Objectives: The aim of this study is to evaluate the association between physical factors, working conditions and occupational injuries among Korean workers. Methods: We used data from the 2nd Korean Working Conditions Survey, conducted in 2010. A total of 7,114 workers over 15 years of age were selected from among 10,019 Korean workers. The participants were interviewed using questionnaires. A multiple logistic regression model was used to analyze the associations among physical factors, working conditions and occupational injuries. Results: After the adjustment of socio-demographic factors, the odds ratio of injuries through physical factors such as vibration (adjusted Odds Ratio [aOR] 4.037, 95% CI 2.30-7.09), noise (aOR 4.562, 95% CI 2.64-7.89), high temperature (aOR 3.262, 95% CI 1.86-5.73), and low temperature (aOR 3.358, 95% CI 1.76-6.41) were greater in the exposed group than in the non-exposed group. The odds ratios of occupational injury(aOR 5.272, 95% CI 3.19-8.7 for very high speed work, aOR 3.303, 95% CI 1.95-5.60 for tight deadlines, and aOR 3.641, 95% CI 1.72-7.70 for not enough time to work) increased with increased work demands. Conclusions: In this study, physical factors such as vibration, noise, and high and low temperatures were significantly correlated with occupational injuries according to the increase in exposure intensity(p for trend <0.001). Also, working conditions such as high-speed work, tight deadlines and insufficient time to work showed significant associations with occupational injuries(p for trend<0.001).
Association of Work-related Characteristics and Hypertension among White Collar Workers
Kim, Chae-Bong ; Kim, KyooSang ;
Journal of Korean Society of Occupational and Environmental Hygiene, volume 25, issue 3, 2015, Pages 418~427
DOI : 10.15269/JKSOEH.2015.25.3.418
Objectives: This study evaluated the association between work related characteristics and hypertension among white collar workers in Korea. Materials and methods: This study was based on the Third Korean Working Conditions Survey(KWCS) conducted in 2011 among workers 15 years of age or older. The total number of individuals included in the analysis was 10,365 white collar workers. Results: The prevalence rate of hypertension was 3.7% among men and 1.0% among women. In multiple logistic analysis the adjusted odds ratio showed statistically effective association to hypertension. For work related characteristics, 1.73 (95% confidence interval, 1.22-2.46) resulted for large-company workers compared with the small-company group, 2.14 (95% CI, 1.22-3.75) for the long working hours group (61 or above) compared with short working hours group(52 or below), 1.78(95% CI, 1.08-2.95) for night shift workers compared with day workers, and 1.54 (95% CI, 1.18-2.01) for high job stress workers compared with low job stress workers. Conclusions: This study showed that it is important for workers to manage their work environment in order to prevent hypertension by modifying their types of work.
A Descriptive Study on Violence by Customer against 'Daeri' Drivers in Korea
Lee, June-Hee ; Won, Jong-Uk ; Roh, Jaehoon ; Kim, Chi Nyon ; Seok, Hongdeok ; Lee, Wanhyung ; Kim, Yeong-Kwang ; Hwang, Jungho ; Yoon, Jin-Ha ;
Journal of Korean Society of Occupational and Environmental Hygiene, volume 25, issue 3, 2015, Pages 428~432
DOI : 10.15269/JKSOEH.2015.25.3.428
Objectives: The purpose of this study was to research 'Daeri' drivers who work for drunken customers as a substitute driver. This was the first study in Korea to investigate assault and verbal abuse experienced while employed as a 'Daeri' driver. Methods: In this study, we conducted a survey to investigate people who work as 'Daeri' drivers. The survey was performed from September 1 to 7, 2014. The participants were 166 adult men and women who work as full-time 'Daeri' drivers. Results: Participants who experienced physical violence and assault from the customers to the point of disturbing safe driving in a year were 36.1% of total respondents. People who experienced verbal abuse to the point of disturbing safe driving in a year totaled 80.4% of respondents. In addition, there were also qualitative research results. Conclusions: Acts that impede safe driving are a danger to both passengers and drivers. By protecting the safety of 'Daeri' drivers, we will be able to protect the safety of citizens. Therefore, it is necessary to make an effort to protect 'Daeri' drivers from customer violence. Furthermore, it is also necessary to research policy to emplace a legal system that can protect 'Daeri' drivers.