High Exposure of Chinese Mercury Mine Workers to Elemental Mercury Vapor and Increased Methylmercury Levels in Their Hair
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概要
- 論文の詳細を見る
Objective: The aim of this study was to determine the level of exposure of mercury(Hg) miners and smelter workers to elemental mercury(Hg^0) vapor in China, who work in Hg mines without using protective equipment against Hg^0 vapor. In addition, the level of methylmercury(MeHg) intake by the workers was estimated from the MeHg concentration in their hair. Methods: Urinary total mercury(THg) and hair THg and MeHg concentrations were measured in 26 Hg miners and smelter workers(i.e., exposed group), and 48 unexposed people(unexposed group). Results: The exposed group showed high geometric mean THg concentrations in urine(258 ng/ml, 226 μg/g creatinine) and hair (20.0μg/g). The urinary THg concentration of the smelter workers in particular was extremely high (338 μg/g creatinine in urine). The highest urine THg concentration reached 4577 μg/g creatinine. THg concentrations in urine and hair showed a significant correlation in the exposed group (r=0.62), indicating the adhesion of Hg^0 vapor to hair. However, no such significant correlation was found in the unexposed group. Hair MeHg concentration in the exposed group(1.97 μg/g) was about threefold higher than that in the unexposed group(0.60 μg/g). Conclusions: This study shows that smelter workers in a Chinese Hg mine are exposed to extremely high levels of Hg^0 vapor, and that Hg miners are exposed to higher levels of MeHg than the unexposed subjects. Further study is needed to determine the cause of the higher hair MeHg concentration in the exposed group.
- 日本衛生学会の論文
著者
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SATOH Masahiko
Laboratory of Pharmaceutical Health Sciences, School of Pharmacy, Aichi Gakuin University
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YOSHIDA Minoru
Faculty of Human Health Sciences, Hachinohe University
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Liu Xiao-jie
State Key Laboratory Of Environmental Geochemistry Institute Of Geochemistry Chinese Academy Of Scie
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SAKAMOTO Mineshi
Department of Epidemiology, National Institute for Minamata Disease
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FENG Xinbin
State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sc
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LI Ping
State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sc
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QIU Guangle
State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sc
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JIANG Hongmei
State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sc
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IWATA Toyoto
Department of Environmental Health Sciences, Akita University School of Medicine
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MURATA Katsuyuki
Department of Environmental Health Sciences, Akita University School of Medicine
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Iwata Toyoto
Department Of Environmental Health Sciences Akita University School Of Medicine
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Satoh Masahiko
Department Of Hygienics Gifu Pharmaceutical University
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Sakamoto Mineshi
Department Of Epidemiology National Institute For Minamata Disease
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Feng Xinbin
State Key Laboratory Of Environmental Geochemistry Institute Of Geochemistry Chinese Academy Of Scie
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Qiu Guangle
State Key Laboratory Of Environmental Geochemistry Institute Of Geochemistry Chinese Academy Of Scie
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Jiang Hongmei
State Key Laboratory Of Environmental Geochemistry Institute Of Geochemistry Chinese Academy Of Scie
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Sakamoto Maya
Department Of Oral Diagnosis And Radiology Tohoku University Graduate School Of Dentistry
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Murata Katsuyuki
秋田大学 医学部医学科社会環境医学
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Murata Katsuyuki
Department Of Environmental Health Sciences Akita University Graduate School Of Medicine
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Li Ping
State Key Laboratory Of Environmental Geochemistry Institute Of Geochemistry Chinese Academy Of Scie
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Yoshida Minoru
Faculty Of Human Health Sciences Hachinohe University
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Yoshida Minoru
Faculty Of Human Health Science Hachinohe University
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Yoshida Minoru
Facul. Of Med. Res. Inst. For Dis. Of Chest Kyushu University
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