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KMID : 0371020000330040477
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Journal of Preventive Medicine and Public Health
2000 Volume.33 No. 4 p.477 ~ p.483
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Asbestos and Non-Asbestos Fiber Content in Lungs of Autopsied Subjects in Pohang with no Known History of Occupational Asbestos Exposure
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Lim Hyun-Sul
Kim Ji-Yong
Kim Dong-Hun
Sakai Kiyoshi
Hisanaga Naomi
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Abstract
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Objectives : To obtain reference values for the pulmonary asbestos and non-asbestos fiber contents of residents in Korea and to compare them with similar results from Japan.
Methods ; The autopsied lung specimens from 22 deceased people (20 males and 2 females) in Pohang, without any known occupational history of asbestos exposure, were analyzed for incidence of asbestos and non-asbestos fibers by transmission electron microscopy with energy dispersive X-ray analysis after using low temperature ashing procedures.
Results : Chrysotile fiber (46.2%) was the major fiber type found in the lungs of the subjects. The asbestos fiber concentrations found in males end females were 0.09×106 fibers/(g of dry lunge) and 0.30×106 fibers/(g of dry lungs), respectively, showing a geometric mean concentration 0.09×106 fibers/(g of dry lung tissue), due to the predominance of males in the sample. The non-asbestos fiber contents in males and females were 4.61×106 fibers/(g of dry lungs) and 17.79×106 fibers/(g of dry lungs), respectively, with a geometric mean concentration 5.21 10 fibers/(g of dry lung tissue).
Conclusions: Residents in Pohang had significantly lower levels of both asbestos and non-asbestos fibers than urban residents in Korea. Furthermore. Koreans had significantly lower levels of both asbestos and non-asbestos fibers than Japanese.
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KEYWORD
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Asbestos, Non-asbestos fiber, Reference value, Lung, Korean
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