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在对353名黄麻纺织工人肺疾息的流行病学调查中发现,慢性支气管炎和不规则性胸紧患病率和发生率分别为13.88%和21.25%,明显高于对照组(均P<0.01),但未发现典型棉尘病患者。慢性支气管炎患病率随麻纺工人接尘时间延长和车间粉尘浓度增高而升高。对接触黄麻扮尘的剂量水平与馒性支气管炎患病率之间关系进行了分析,应用接尘量回归法,估算工人接尘30年,慢性支气管炎息病率控制在15%时,车间空气中黄麻粉尘最高容许浓度的建议值为4mg/m3。
In a survey of 353 jute textile workers lung disease epidemiological survey found that chronic bronchitis and irregular chest tightness prevalence and incidence were 13.88% and 21.25%, significantly higher than the control group (All P <0.01), but no typical cotton dust disease was found. The prevalence of chronic bronchitis increased with the prolongation of dust exposure in hemp workers and the increase of dust concentration in the workshop. The relationship between the dose level of dust exposed to jute and the prevalence of steamed bronchitis was analyzed. Using the dust collection regression method, the workers’ exposure to dust was estimated to be 30 years and the chronic bronchitis prevalence rate was controlled at 15%. The workshop Jute dust in the air the maximum allowable concentration of the recommended value of 4mg / m3.