| 总粉尘浓度转换为呼吸性粉尘浓度的两种方法学研究 |
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| 引用本文： | Gao,P 陈卫红.总粉尘浓度转换为呼吸性粉尘浓度的两种方法学研究[J].中华劳动卫生职业病杂志,1999,17(3):135-138. |
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| 作者姓名： | Gao P 陈卫红 |
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| 作者单位： | 美国国家职业安全卫生研究所(陈卫红)，中国同济医科大学劳动卫生学教研室(陈镜琼) |
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| 摘 要： | 目的探讨流行病学研究中历史性总粉尘浓度转换成呼吸性粉尘浓度的理论方法。方法采用两种方法：一种通过体积直接计算；另一种用ＨａｔｃｈＣｈｏａｔｅ方程计算，推导出计数百分比和计量百分比的转换关系。结果得到总粉尘浓度与呼吸性粉尘浓度的理论转换系数，其中，用ＨａｔｃｈＣｈｏａｔｅ方程计算结果偏低。结论体积直接计算法更适用。
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| 关 键 词： | 呼吸性百分数 粉尘 转换系数 |
Two approaches to convert historical mining dust exposures into respirable fraction(based on
microscope sizing measurements) |
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| Gao Pengfei,Chen BT,Chen Weihong,et al..Two approaches to convert historical mining dust exposures into respirable fraction(based on
microscope sizing measurements)[J].Chinese Journal of Industrial Hygiene and Occupational Diseases,1999,17(3):135-138. |
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| Authors: | Gao Pengfei Chen BT Chen Weihong |
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| Institution: | Gao Pengfei*,Chen BT,Chen Weihong,et al.* National
Institute for Occupational Safety and Health,Morgantown,USA |
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| Abstract: | Objective A large
historical total dust exposure was converted into respirable mass concentrations for an
epidemiological study. Methods Two options,one by direct calculation using volume
contribution in each fraction and the other by using the HatchChoate equation,have been
developed to convert count fraction into mass fraction. Results In general,the conversion using
HatchChoate equation offered a slightly lower conversion value. Conclusion The direct
calculations using volume contribution in each fraction are preferable. |
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| Keywords: | Respirable fractionDustConversion factor |
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