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Assessment of Occupational Exposure to Cadmium in Korea
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Seong Kyu Kang, Jeong Pyo Hong, Ki Woong Kim, Jae Yeon Jang, Ho Keun Chung, Kyou Chull Chung
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Korean Journal of Occupational and Environmental Medicine 1994;6(2):252-258. Published online September 30, 1994
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DOI: https://doi.org/10.35371/kjoem.1994.6.2.252
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 Abstract
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- Twenty-four factories registered at the Ministry of Labor as factories using or producing cadmium in 1991 were investigated to know the present state of occupational exposure to cadmium in 1992.
Nine factories among 24 stopped using or changed to other substances and 1 factory didn't produce any more, but delivered it to other factories through imports. Therefore, only 14 factories were producing or using cadmium. But, alloying materials were uspplied to about 20 and more factories, however, they couldn't be investigated because of limited information.
Three factories had less than 50 workers were 3, 6 had 50-300 and 5 had more than 300. About 167 workers were exposed to cadmium.
According to the classification by process, there were 4 alloy processes, 2 refinary, 2 elctroplating, 2 dry cell making, 1 industrial battery and 1 copper refinary. 8 factories used metal cadmium, 3 cadmium oxide, 2 cadmium sulfide, and 1 cadmium hyroxide. One factory was importing cadmium stearates only and supplying them to the PVC making factories. The amount of metal cadmium producing in 2 refinary factories was about 50-65 ton per month. The other cadmium compounds were imported.
According to exposure level of cadmium in air of the 10 factories examined, each factory could be divided into high, moderate and low exposure groups. 1 battery recycling factory and 3 alloy factories were in the high exposure group and their mean air concentrations were 0.06679, 0.05481, 0.02492, and 0.003mg/m3, respectively. Refinary and industrial battery making factories were in the middle exposure group and their mean air concentrations were 0.00773 and 0.00613 mg/m3, respectively. Finally, low exposure group were copper smelting, dry cell case making, duplicator drum making and electroplating factory and their mean air concentrations were 0.00096, 0.00071, 0.00057 and 0.00054 mg/m3 respectively.
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Citations
Citations to this article as recorded by  - Chronic Cadmium Intoxication and Renal Injury Among Workers of a Small-scale Silver Soldering Company
Won-Jun Choi, Seong-Kyu Kang, Seunghon Ham, Wookyung Chung, Ae Jin Kim, Myunghee Kang
Safety and Health at Work.2020; 11(2): 235. CrossRef - The association between cadmium and lead exposure and blood pressure among workers of a smelting industry: a cross-sectional study
Hyun Chan An, Joo Hyun Sung, Jiho Lee, Chang Sun Sim, Sang Hoon Kim, Yangho Kim
Annals of Occupational and Environmental Medicine.2017;[Epub] CrossRef
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Activities of Serum Lactate Dehydrohenase and Lactate Dehydrogenase Isoenzymes Activities by Small Opacity Groups on Chest Radiographs in Coal Worker's Pneumoconiosis Patients
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Ho Deun chung, Jeong Pyo Hong
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Korean Journal of Occupational and Environmental Medicine 1990;2(2):206-211. Published online August 31, 1990
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DOI: https://doi.org/10.35371/kjoem.1990.2.2.206
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Abstract
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- Serum lactate degydrogenase (LD) and LD isoenzyme activities were evaluated in sera from 74 patients of coal workers' pneumoconiosis (CWP) to investigate biochemical changes of these enzyme activities according to radiographical profusions of CWP.
Subjects were participated patients in the detailed examination of pneumoconiosis in December 1989.
LD activities were evaluated by lactate to pyruvate methods and isoenzyme activities were determined by agarose gel electrophoresis. And small opacity profusions on chest radiographs of subjects were evaluated by radiologist.
The results were as follows: 1. LD activities were not significantly different among categories of radiographical profusions.
2. LD4 activities were shown difference significantly among categories of radiographical profusions (category 1: 8.2+/-2.69 U/l, category 2: 10.1+/-3.90, category 3: 10.6+/-2.63; p<0.05).
3. Activities of LD(1), LD(2), LD(3), and LD(5) were not different significantly among categories of radiographical profusions.
Conclusion
ly, serum LD(4) activity seems to be increased by fibroplasia of CWP, but increasing activities of LD4 should not affect serum LD activities significantly.
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The Serum Alpha-antitrypsin Concentration of Coal Workers' Pneumoconiosis Patients
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Bong Suk Cha, Ho Keun Chung, Jeong Pyo Hong
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Korean Journal of Occupational and Environmental Medicine 1990;2(1):34-43. Published online February 28, 1990
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DOI: https://doi.org/10.35371/kjoem.1990.2.1.34
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Abstract
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- This study was performed to investigate associations between serum alpha(1)-antitrypsin(AAT) concentration and radiological categories of coal workers' pneumoconlosis(CWP), between AAT concentration and pulmonary complications such as tuberculosis and emphysema, and to study associations between AAT concentration and FEV(1.0)% in CWP patients, We classified 254 CWP patients in D Hospital into categories of small opacity profusion. And we selected 86 subjects by with or without emphysematous finding in each categories by proportional stratified sampling method.
Semm AAT concentrations were quantkated by single radial immunodiffusion method, and the findings of chest radiographs were evaluated by radilogist.
The results were as follows: 1. Serum AAT concentrations were not significantly different among groups of radiological categories of small opacities.
2. Complication of emphysema was associated with smoking habits sigmficantlyl(chi square=12.16, p<0,01). And AAT concentraLion was higher in smokers and ex-smokers than in non-smokers. Serum AAT concentration was significantly higher in the cases with emphysema than in the cdses without emphybema{p<0.01).
3. Serum AAT concentration of the group with active pulmonary tuberculosis was significantly higher than with inactive or without: pulmonary tuberculosis group(p<0.1).
4. Serum AAT concentration of the group with low FEV(1.0)% was significantly higher than with high or normal group(p<0.05).
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Smoking Habit of Coal Workers' Pneumoconiosis Patients: Their Relationship to the Findings of Chest Radiographs
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Jeong Pyo Hong, Ho Keun Chung
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Korean Journal of Occupational and Environmental Medicine 1990;2(1):23-33. Published online February 28, 1990
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DOI: https://doi.org/10.35371/kjoem.1990.2.1.23
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Abstract
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- No abstract available.
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