摘要
对锰矿接尘工人１６８８人胸部Ｘ线动态观察结果，尘肺患病率为１．７８％，其中Ⅰ期２８例，Ⅱ期２例１３０例患者中井下采掘１２７例。Ｘ线异常率为４５．０８％，以井下工最高，Ｘ线异常率及各工种出现尘肺０￣＋的发生率与生产环境中的粉尘浓度呈正相关，相关系数ｒ分别为０．９１及０．９７８。而与空气中锰浓度无相关，发锰均数与粉尘浓度无相关及尘肺期刊不平行。
The chest radiograph was periodically observed in 1688 manganese miners exposed to dust. The result showed that the prevalence rate of pneumoconiosis was 1.78% (30 cases)in which 28 cases were graoded I and 2 cases were graded 11.27 out of 30 cases were shaft excavators. The abnormal rate of chest radiograph was 45.08%,which the highest was in shaft work ers.The abnormal rate of radiograph and the incidence rate of pneumoconiosis graded O￣+ in all kinds of work were positively correlated to the dust concentration (the correlation coefficient was respectively 0.91 and 0.978)
出处
《铁道劳动安全卫生与环保》
1995年第1期10-14,共5页
Railway Occupational Safety Health & Environmental Protection
关键词
锰矿
工人
尘肺
调查
空气锰含量
粉尘浓度
Pneumoconiosis in manganese miners Radiographabnormality Manganese concentration in air Dust concent ration Manganese conce ntration in hair
