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Development of Technology for Environmental Assessment and Biological Monitoring of Workers Exposed to Benzene
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Chul Whan Cha, Kwang Jong Kim, Jung Chul Kim, Nam Won Paik
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Korean Journal of Occupational and Environmental Medicine 1994;6(1):122-133. Published online February 28, 1994
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DOI: https://doi.org/10.35371/kjoem.1994.6.1.122
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 Abstract
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- The objective of this study were to evaluate a correlation between airborne benzene concentrations and urinary muconic acid and to evaluate that between airborne benzene concentrations and urinary phenol concentrations.
The high performance chromatographic method was used to measure the muconic acid concentrations in urine samples collected from 69 workers exposed to benzene and 155 non-exposed workers.
The time weighted average benzene concentrations in breathing zone of workers were also determined. The physical examination and blood counts (hemoglobin, hematocrit, red blood cell, and white blood cell) were made for both workers exposed to benzene and control group.
The results are as follows; 1. The geometric mean of airborne benzene concentrations for all workers was 2.0ppm (0.1-56.9ppm). The mean airborne benzene concentration of workers in adhesive tape manufacturing industry was 12.2ppm (8.3-56.9ppm), which was the highest by type of industry.
2. The geometric mean concentration of muconic acid in urine from male workers exposed to benzene was 3.9 mg/l (0.8-40.8 mg/l), which was significantly higher than that of non-exposed workers. The highest muconic acid concentration was indicated in the workers at the adhesive tape manufacturing industry.
3. There was a significant difference between the mean concentration of muconic acid of workers exposed to airborne benzene concentration of 5-10 pm and that of workers exposed to concentrations below 5 ppm.
The urinary muconic acid concentration were correlated with airborne benzene concentration for workers (r=0.85). However there was no significant correlation between urinary phenol concentrations and airborne benzene concentrations.
4. The correlation coefficients between the urinary muconic acid concentration and airborne benzene concentration, urinary phenol concentration, exposure dose(airborne benzene concentration x work duration) and white blood cell were 0.85, 0.74, 0.63 and -0.33, respectively.
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Citations
Citations to this article as recorded by  - Estimating Benzene Exposure Level over Time and by Industry Type through a Review of Literature on Korea
Donguk Park, Sangjun Choi, Kwonchul Ha, Hyejung Jung, Chungsik Yoon, Dong-Hee Koh, Seunghun Ryu, Soogeun Kim, Dongmug Kang, Kyemook Yoo
Safety and Health at Work.2015; 6(3): 174. CrossRef - Occupational Lymphohematopoietic Cancer in Korea
Eun-A Kim, Won Jin Lee, Mia Son, Seong-Kyu Kang
Journal of Korean Medical Science.2010; 25(Suppl): S99. CrossRef - Occupational exposure to benzene in South Korea
Seong-Kyu Kang, Mi-Young Lee, Tae-Kyun Kim, Jeong-Oh Lee, Yeon Soon Ahn
Chemico-Biological Interactions.2005; 153-154: 65. CrossRef
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A study on the mercury contamination sources and risk for occupational mercury poisoning of mercury exposed workers in Korea
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Chul Whan Cha, Kwang Jong Kim, Yong Tae Yum
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Korean Journal of Occupational and Environmental Medicine 1992;4(1):92-104. Published online February 29, 1992
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DOI: https://doi.org/10.35371/kjoem.1992.4.1.92
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Abstract
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- No abstract available.
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Citations
Citations to this article as recorded by - The associations between blood mercury levels and shark meat intake among workers in Gyeongsangbuk-do
Gun Il Park, Young Seok Byun, Man Joong Jeon, Joon Sakong
Annals of Occupational and Environmental Medicine.2017;[Epub] CrossRef - Population correlates of circulating mercury levels in Korean adults: the Korea National Health and Nutrition Examination Survey IV
Seongbeom Cho, David R Jacobs, Kyong Park
BMC Public Health.2014;[Epub] CrossRef - Occupational Diseases in Korea
Seong-Kyu Kang, Eun A Kim
Journal of Korean Medical Science.2010; 25(Suppl): S4. CrossRef
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23
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Health status of workers exposed to carbon disulfide at a viscoserayon factory in Korea
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Eun Il Lee, Chul Whan Cha
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Korean Journal of Occupational and Environmental Medicine 1992;4(1):20-31. Published online February 29, 1992
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DOI: https://doi.org/10.35371/kjoem.1992.4.1.20
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Abstract
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- No abstract available.
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Citations
Citations to this article as recorded by - Recognition and Using Status of Carbon Disulfide (CS2) as Fumigant for Controlling Chestnut Weevil, Curculio sikkimensis among Chestnut Farmers
Moo-Sik Lee, Eun-Young Kim, Jae-Lim Lee, Gi-Yeon Sohn
Journal of agricultural medicine and community health.2016; 41(2): 63. CrossRef - Preparation of Eco-friendly and High Strength Paper for Viscose Rayon Yarn
Sung-Jun Hwang, Hyoung-Jin Kim, Paek-Hyun Bae
Journal of Korea Technical Association of The Pulp and Paper Industry.2015; 47(6): 154. CrossRef - Occupational Neurologic Disorders in Korea
Yangho Kim, Kyoung Sook Jeong, Yong-Hun Yun, Myoung-Soon Oh
Journal of Clinical Neurology.2010; 6(2): 64. CrossRef - A review of health effects of carbon disulfide in viscose industry and a proposal for an occupational exposure limit
Heinz-Peter Gelbke, Thomas Göen, Mathias Mäurer, Sandra I. Sulsky
Critical Reviews in Toxicology.2009; 39(sup2): 1. CrossRef - Trans‐Cranial Doppler and Peripheral Sensory Threshold Tests for Carbon Disulfide Poisoning
Eunil Lee, Hun‐Jong Chung, Soon‐Duck Kim, Jong‐Tae Park, Donggeun Sul, Myung‐Hyun Kim
Journal of Occupational Health.2001; 43(6): 307. CrossRef - Carbon Disulfide Poisoning in Korea with Social and Historical Background
Eunil Lee, Soonduck Kim, Haejoon Kim, Kwangjong Kim, Yongtae Yum
Journal of Occupational Health.1996; 38(4): 155. CrossRef
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Mercury Concentration in air and in Urine of Workers in Fluorescent Lamp Manufacturing Factories in Korea
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Kwang Jong Kim, Chul Whan Cha
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Korean Journal of Occupational and Environmental Medicine 1990;2(2):179-185. Published online August 31, 1990
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DOI: https://doi.org/10.35371/kjoem.1990.2.2.179
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Abstract
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- This research was conducted to investigate the correlations between urinary mercury concentration and each independent variable related with urinary mercury levels. the urinary mercury concentrations of 543 workers exposed to metal mercury vapor in a total of 11 fluorescent lamp manufacturing factories and at the same time mercury concentrations in air were measured from June 1989 to December 1989. And annually mercury consumption per workers, mercury consumption per lamp, numbers of breakage lamps, frequency of mercury infusion, numbers of droppers, and numbers of vacuum exhaustion pumps were also investigated.
The results were as follows: 1. The geometric mean of airborne mercury concentration in a total of 11 factories was 47.9 microgram/m3 (5.8~352.2 microgram/m3), six factories(54.5%) of them were exceed the threshold limit value(50.0 microgram/m3).
2. The geometric mean of urinary mercury concentration among 543 workers was 84.3 microgram/l (1.13~533.9 microgram/l), the distribution of workers by urinary mercury concentration showed that 26 workers(4.8%) were above the mercury posioning level(300 microgram/l).
3. The correlation coefficient between urinary mercury concentration and monthly numbers of breakage lamps was the highest(0.74) and next was mercury consumption per lamp (0.67), annually mercury consumption per worker(0.63) in order.
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An Investigation of Mercury Contamination Soures in Fluorescent Lamp Manufacturing Industries in Korea
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Chang Joo Lee, Kwang Jong Kim, Chul whan Cha
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Korean Journal of Occupational and Environmental Medicine 1990;2(1):58-63. Published online February 28, 1990
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DOI: https://doi.org/10.35371/kjoem.1990.2.1.58
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Abstract
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- This research was conducted to study the correlations between the airborne mercury concentration and each independent variable to detect the source of mercury contamination in a total or II fluorescent lamp manufacturing factories- The mercury concentraion in air was measured and informations about production management (operation hour, overtime, vacuum exhaustion system, number of droppers, number of vacuum exhaustion pumps, frequency of mercury infusion, mercury consumption per lamp, number of lamps producted, number of inferior lamps producted, number of breakage lamps, local exhaust ventilation system) were collected from January 1988 to March 1989.
The results were as follows: 1. Among the airborne mercury concentrations according to the sampling point the highest mean concentration was 0.162mg/m3(0.016-0.635 mg/m3) at the workplace floor, and 0.074 mg/m3 at the vaccum exhaustion pump site, and 0.06 mg/m3 at the breathing zone in order.
2. The correlation between airborne mercury concentration and each Independent variable was significant in a following order; the number of Inferior lamps productedt(0.485), vacuum exhaustion syatem(-0,405), number of breakage lamps (0.344), operation hourl(0.341), number of vacuum exhaustion pumps(0.337) and local exhaust ventilation systern(0.331).
3. The result of stepwise multiple regression analysis showed that the airborne mercury consumption was affected by number of inferior lamps producted, frequency of mercury infusion, overtime, ventilator, mercury consumption amounts per lamp, local exhaust ventilation system in order. And these six variables explained 36.7% of the variance of airborne mercury concentration.
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Mercury Concentration in Air and in Urine of Workers in A Fluorescent Lamp Manufacturing Factory
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Seung Hoi Park, Kwang Jong Kim, Soung Hoon Chang, Chul Whan Cha
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Korean Journal of Occupational and Environmental Medicine 1989;1(2):197-205. Published online November 30, 1989
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DOI: https://doi.org/10.35371/kjoem.1989.1.2.197
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Abstract
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- In order In interpret the relationship among many variables, urinary mercury and at the same time mercury concentration in air were measured for 254 workers of a fluorescent lamp manufacturing factory. And monthly mercury consumption amounts, numbers of monthly producing fluorescent lamps, numbers of inferior lamps and numbers of breakage lamps, numbers of vacuum exhaustion pumps and frequencies of mercury infusion were also investigated from January 1988 to March in 1989.
The results were as follows; 1. On the mercury concentration in air by producing line and by working site, all of them were exceed the threshold limit value (0.05mg/m(2)).
2. The highest mercury concentration in air by sampling point was found at the floor of workplace (0.334mg/m(2)) and next were at vacuum exhaustion pimp (0.183mg/m(2)), and breathing zone of workers (0.103mg/m(2)) in order.
3. The highest mean of the mercury concentration in urine by producing line was the automatic exhausting line (80.8microgram/1) and next were high speed exhausting line (72.4microgram/1), and Manual exhausting line (35.8microgram/1) in order. Distribution of workers of the mercury concentration in urine more than 200microgram/1 by working site was the highest (10%) in the vacuum exhaustion pump part and next were sealing part (6.6%), packing part (4.6%), and stem part (4.1%) in order.
4. The correlation coefficient between mercury concentration in urine and in air was the highest (0.302) and next were numbers of breakage lamps (0.223), frequencies of mercury infusion (0.223), numbers of inferior lamps (0.205) in order.
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