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cross-sectional silica exposure measurements at two zambian copper mines of nkana and mufulira横截面硅接触测量两个赞比亚铜矿nkana mufulira.pdf

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Int. J. Environ. Res. Public Health 2008, 5(2), 86-90 International Journal of Environmental Research and Public Health ISSN 1661-7827 © 2008 by MDPI Cross-Sectional Silica Exposure Measurements at Two Zambian Copper Mines of Nkana and Mufulira 1,2* 1 3 Patrick Hayumbu , Thomas G. Robins and Rosa Key-Schwartz 1University of Michigan, School of Public Health, Department of Environmental Health Sciences, 1420 Washington Heights Ann Arbor, MI 48109-2029, USA 2National Institute for Scientific and Industrial Research, International Airport Road, P.O. Box 310158, Lusaka, Zambia 3National Institute for Occupational Safety and Health, 4676 Columbia Parkway, MS-R7, Cincinnati, OH 45226, USA *Correspondence to Dr. Patrick Hayumbu. E-mail: trobins@ phayumbu@ Received: 17 September 2007 / Accepted: 30 April 2008 / Published: 30 June 2008 Abstract: We measured the quartz content of 20 bulk settled dust and 200 respirable dust samples in a cross-sectional dust exposure assessment that is part of an epidemiological study to ascertain the risk of nonmalignant respiratory diseases among Zambian copper miners. Dust samples were collected from the copper mines of Mopani Copper Mine plc (Mufulira and Nkana Mines). Analytical measurements employed
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