Annals of Occupational and Environmental Medicine

Yong Lim Won

5 Articles

Assessment of Arsenic Exposure by Measurement of Urinary Speciated Inorganic Arsenic Metabolites in Workers in a Semiconductor Manufacturing Plant: Kiwhan Byun, Yong Lim Won, Yang In Hwang, Dong-Hee Koh, Hosub Im, Eun-A Kim; Ann Occup Environ Med 2013;25:21-21. Published online October 11, 2013; DOI: https://doi.org/10.1186/2052-4374-25-21

Objectives

The purpose of this study was to evaluate the exposure to arsenic in preventive maintenance (PM) engineers in a semiconductor industry by detecting speciated inorganic arsenic metabolites in the urine.

Methods

The exposed group included 8 PM engineers from the clean process area and 13 PM engineers from the ion implantation process area; the non-exposed group consisted of 14 office workers from another company who were not occupationally exposed to arsenic. A spot urine specimen was collected from each participant for the detection and measurement of speciated inorganic arsenic metabolites. Metabolites were separated by high performance liquid chromatography-inductively coupled plasma spectrometry-mass spectrometry.

Results

Urinary arsenic metabolite concentrations were 1.73 g/L, 0.76 g/L, 3.45 g/L, 43.65 g/L, and 51.32 g/L for trivalent arsenic (As³⁺), pentavalent arsenic (As⁵⁺), monomethylarsonic acid (MMA), dimethylarsinic acid (DMA), and total inorganic arsenic metabolites (As³⁺ + As⁵⁺ + MMA + DMA), respectively, in clean process PM engineers. In ion implantation process PM engineers, the concentrations were 1.74 g/L, 0.39 g/L, 3.08 g/L, 23.17 g/L, 28.92 g/L for As³⁺, As⁵⁺, MMA, DMA, and total inorganic arsenic metabolites, respectively. Levels of urinary As³⁺, As⁵⁺, MMA, and total inorganic arsenic metabolites in clean process PM engineers were significantly higher than that in the non-exposed group. Urinary As³⁺ and As⁵⁺ levels in ion implantation process PM engineers were significantly higher than that in non-exposed group.

Conclusion

Levels of urinary arsenic metabolites in PM engineers from the clean process and ion implantation process areas were higher than that in office workers. For a complete assessment of arsenic exposure in the semiconductor industry, further studies are needed.

Citations

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Arsenic Exposure and Methylation Efficiency in Relation to Oxidative Stress in Semiconductor Workers
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Occupational Characteristics of Semiconductor Workers with Cancer and Rare Diseases Registered with a Workers' Compensation Program in Korea
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Exposure assessment of process by-product nanoparticles released during the preventive maintenance of semiconductor fabrication facilities
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Considerations in deriving quantitative cancer criteria for inorganic arsenic exposure via inhalation
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Environment International.2015; 74: 258. CrossRef
Reproductive Hazards Still Persist in the Microelectronics Industry: Increased Risk of Spontaneous Abortion and Menstrual Aberration among Female Workers in the Microelectronics Industry in South Korea
Inah Kim, Myoung-Hee Kim, Sinye Lim, Roger C. Young
PLOS ONE.2015; 10(5): e0123679. CrossRef
The separation of arsenic metabolites in urine by high performance liquid chromatographyinductively coupled plasma-mass spectrometry
Jin-Yong Chung, Hyoun-Ju Lim, Young-Jin Kim, Ki-Hoon Song, Byoung-Gwon Kim, Young-Seoub Hong
Environmental Health and Toxicology.2014; 29: e2014018. CrossRef

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The Relationship between Job Stress and Musculoskeletal Symptoms in Migrant Workers: Min Heui Jo, Kyoo Sang Kim, Sun Wung Lee, Tae Gyun Kim, Hyang Woo Ryu, Mi Young Lee, Yong Lim Won; Korean Journal of Occupational and Environmental Medicine 2009;21(4):378-387. Published online December 31, 2009; DOI: https://doi.org/10.35371/kjoem.2009.21.4.378

Abstract PDF

OBJECTIVE: To investigate the musculoskeletal symptoms of migrant workers. We focused on the relationship between job stress and musculoskeletal symptoms.
METHOD
A questionnaire was administered to 502 migrant workers who visited NGO migrant worker centers located in Gyung-gi province. A structured, self-reported questionnaire was administered to participants in order to capture the following information: sociodemographics, health factors including past medical history, work related characteristics, job stress, and musculoskeletal symptoms. The job stress questionnaires were used according to KOSS-26 and musculoskeletal symptoms were measured using KOSHA Code H-30-2003. We used multiple logistic regression analysis to assess the relationship between risk factors which included job stress, and musculoskeletal symptoms.
RESULTS
The prevalence rate of musculoskeletal symptoms in survey subjects was 35.1%. Other than job stress factors, past medical history was the only factor that had a statistical relationship to musculoskeletal symptoms (P<0.01). In the domains of job stress, physical environment (OR 1.62, 95% CI: 1.03~2.54), job demand (OR 2.43, 95% CI: 1.46~4.03), job insecurity (OR 1.59, 95% CI: 1.03~2.47), occupational climate (OR 2.30, 95% CI: 1.27~4.19) were most likely experience musculoskeletal symptoms.
CONCLUSION
The job stress factor appeared to correlate more with musculoskeletal symptoms than with sociodemographics or other factors. Hence, in order to prevent migrant worker's musculoskeletal symptoms, we believe that intervention in job stress (physical environment, job demand, job insecurity, occupational climate) is necessary.

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Ohwi Kwon, Ji-Hun Song, Jeong-Ok Kong, Seong-Won Ma, Young Shin Lee, Joonho Ahn
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Barriers to Performing Stretching Exercises Among Korean‐Chinese Female Migrant Workers in Korea
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Public Health Nursing.2015; 32(2): 112. CrossRef
Job Stress and Musculoskeletal Disorder in Seoul City's School Foodservice Employees
Saerom Lee, KyooSang Kim, Eun-A Kim, Jihye Kim, Dohyung Kim
Korean Journal of Occupational Health Nursing.2014; 23(4): 245. CrossRef
Experiences of Middle-aged Korean-Chinese Female Migrant Workers in Korea: With Focus on Risk Factors in Work-related Musculoskeletal Diseases
Hyeonkyeong Lee, Duckhee Chae, Kyongeun Lee, Meenhye Lee
Journal of Korean Academy of Community Health Nursing.2013; 24(2): 185. CrossRef
Associations between Job Stress and Work-related Musculoskeletal Symptoms in Street Sanitation Workers
Hye-Jin Kim, Kyung-Ja June, Gyeyoung Shin, Jina Choo
Journal of Korean Academy of Community Health Nursing.2013; 24(3): 314. CrossRef
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Application of Community-Based Participatory Research Principles: Preventing Work-Related Musculoskeletal Disorders Among Female Korean–Chinese Migrant Workers in Korea
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Workplace Health & Safety.2012; 60(7): 313. CrossRef
Relationship between occupational stress and musculoskeletal symptoms of upper extremities among dental hygienists
So-Young Lee, Hyo-Jin Ko, Byeng-Chul Yu
Journal of Korean society of Dental Hygiene.2012; 12(5): 897. CrossRef
Related Factors to Musculoskeletal Discomfort Symptoms on Some Middle·High school Teachers
Jae-Yoon Lee, Byeong-Yeon Moon, Youn-Hong Jeong, Hyun-Kyung Woo
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Musculoskeletal Disorder Symptoms and Related Factors among Male Workers in Small-scale Manufacturing Industries
Seung-Hyun Lee, Ju-Yeon Lee, Young-Chae Cho
Journal of the Korea Academia-Industrial cooperation Society.2012; 13(9): 4025. CrossRef
Job stress and musculoskeletal diseases
Dong Mug Kang, Young Ki Kim, Jong Eun Kim
Journal of the Korean Medical Association.2011; 54(8): 851. CrossRef

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The Relationship between Job Stress and Depressive Symptoms in Migrant Workers in Kyung-gi Province in Korea: Sun Wung Lee, Kyoo Sang Kim, Tae Gyun Kim, Hyang Woo Ryu, Mi Young Lee, Yong Lim Won, Yoon Hee Song; Korean Journal of Occupational and Environmental Medicine 2009;21(1):76-86. Published online March 31, 2009; DOI: https://doi.org/10.35371/kjoem.2009.21.1.76

Abstract PDF

OBJECTIVES
To investigate the mental health status of migrant workers. We focused on the relationship between depressive symptoms and job stress. METHEOD: A questionnaire was administered to 488 migrant workers who visited NGO migrant worker centers located in Kyung-gi province. A structured, self-reported questionnaire was used to assess each responder's sociodemographics, work related characteristics, health behaviors, past medical history, job stress and depression symptoms. The job stress questionnaire was used according to KOSS-26 and depression symptoms were measured using CES-D, which was translated into Korean. We used multiple logistic regression analysis to assess the relationship between risk factors included job stress and depression symptoms.
RESULTS
The prevalence of depression symptoms in survey subjects was 25.2%, but the prevalence of non-Chinese nationalities and illegal workers were 32.1% and 32.8%, respectively. Adjusting for confounding factors, job stress (OR 2.55, 95% CI=1.30-4.99) had a statistical meaningful relationship with depression symptoms. Among job stress domains, physical environment (OR 2.97, 95% CI=1.59-5.53), job demand (OR 2.33, 95% CI=1.26-4.32) and occupational climate(OR 3.10, CI=1.49-6.48) were most likely to experience depression symptoms.
CONCLUSIONS
The prevalence of depressive symptoms among the study subjects was similar to the prevalence among the general population in Korea, but higher than that among the Korean workers. In particular, the prevalence among non-Chinese and illegal workers was higher. However, the job stress factor appeared to have a more direct correlation with depressive symptoms than the sociodemographic factors of nationality or residential status. Hence, in order to prevent depressive symptoms of the migrant workers, we believe that intervention on job stress is necessary.

Citations

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Annals of Occupational and Environmental Medicine.2023;[Epub] CrossRef
Affecting Factors on Sleep Quality in Foreign Workers
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Effects of changes in occupational stress on the depressive symptoms of Korean workers in a large company: a longitudinal survey
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Acculturation Stress and Health Promotion Behaviors of the Korean Chinese Elderly Immigrants Living in Korea
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Journal of Korean Neuropsychiatric Association.2015; 54(4): 587. CrossRef
Acculturative Stress, Work‐related Psychosocial Factors and Depression in Korean‐Chinese Migrant Workers in Korea
Hyeonkyeong Lee, Hyunmi Ahn, Arlene Miller, Chang Gi Park, Sun Jung Kim
Journal of Occupational Health.2012; 54(3): 206. CrossRef

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Acoustic Calibration of Clinical Audiometers Used for Special Periodic Health Examination: Kyoo Sang Kim, Yong Lim Won, Soo Young Chung, Seong Kyu Kang; Korean Journal of Occupational and Environmental Medicine 2004;16(4):381-390. Published online December 31, 2004; DOI: https://doi.org/10.35371/kjoem.2004.16.4.381

Abstract PDF

OBJECTIVES
Various problems are encountered during audiometric testing. Deviation from reference threshold levels for supra-aural earphones is often a serious problem when hearing levels are measured. This paper reports the acoustic calibration of clinical audiometers used for special periodic health examination.
METHODS
ANSI S3.6-1996 Specification for Audiometers represents our most current and best resource for information regarding audiometers. The acoustic calibration was measured in 211 clinical audiometers and compared with the ANSI S3.6-1996 reference threshold levels for supra-aural earphones.
RESULTS
Among 211 clinical audiometers, 56 (26.5%) exceeded the permitted deviation from reference threshold levels at any test frequency in ANSI S3.6-1996 for left supra-aural earphones, and 54 (25.6%) for right. An exhaustive calibration was required for 16 audiometers (7.6%) in both supra-aural earphones. The absolute difference in dB deviation from reference threshold levels by performed acoustic calibration at least annually were statistically significant at any test frequency (p<.05).
CONCLUSIONS
The results of this study strongly indicate that clinical audiometry is being conducted with pure-tone audiometers having unallowable sound pressure levels deviations for supra-aural earphones. The validity of audiometric hearing thresholds are significantly affected by these deviations from the acoustic calibration levels of audiometers. Therefore audiometer calibration need to be checked functionally daily and acoustically at least annually.

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Development of Linux based Real-Time Spectrum Analyzer for Puretone Audiometer
Deok-Hun Kang, Bum-Joo Shin, Gye-Rok Jeon, Soo-Geun Wang
Journal of the Korea Academia-Industrial cooperation Society.2011; 12(6): 2830. CrossRef

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Ambient Noise Levels in the Audiometric Test Rooms Used for Special Periodic Health Examination: Kyoo Sang Kim, Yong Hyu Choi, Yong Lim Won, Seong Kyu Kang; Korean Journal of Occupational and Environmental Medicine 2004;16(3):316-328. Published online September 30, 2004; DOI: https://doi.org/10.35371/kjoem.2004.16.3.316

Abstract PDF

OBJECTIVES
The ambient noise levels in the test rooms affect the workers's hearing threshold. The present study was designed to assess the ambient noise levels in the test rooms to determine if valid hearing tests, both pure-tone air conduction and bone-conduction, could be performed in these environments.
METHODS
In the present study, third octave band ambient noise sound pressure levels were measured in 124 audiometric test rooms used for clinical audiometry, and the results were compared with the ANSI third octave band maximum permissible ambient noise levels (MPANLs) for each test condition and frequency range.
RESULTS
The ambient noise SPLs were highest in the lower frequencies, and this decreased as the frequency increased. For the "ears covered"condition, about 24.2% of the rooms were in compliance (pass) with the MPANLs for the 125-8000 Hz, 35.5% were in compliance for the 250-8000 Hz range and 55.6% were in compliance for the 500-8000 Hz range. For the "ears not covered"condition, only about 8.1% of the rooms passed for the 125-8000 Hz, 13.7% of the rooms passed for the 250-8000 Hz range and 34.7% of the rooms passed for the 500-8000 Hz range. All 124 rooms met the OSHA MPANLs.
CONCLUSIONS
The results of this study strongly indicate that clinical audiometry is being conducted in test rooms having unacceptable or excessive ambient noise levels.

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