摘要
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。
his paper reports the result of epidemiological investigation on workers of a jute processingfactory. Of 353 subjects, male were 104 and female were 249.The result showed that prevalencerates of chronic bronchitis and a typical chest tightness were 13.88%and 21.25%,respectively,both indexes significantly higher than those of control group(P<0.01).Classical symptoms ofbyssinosis vvere not found in the investigation. The prevalence rate of chronic bronchitis was ris-ing with the duration extension and concentration increase of the jute dust exposure,A correlationanalysis between the cumulation level of jute dust exposure and the prevalence rate of chronicbronchitis was cond ucted.Assumed workers to be exposed to jute dust for 30 years and theprevalence rate of chronic bronchitis controlled under 15%, we extrapolate the MAC of the dustin the air of workplace to be 4mg/m3 by regression method.
出处
《职业卫生与病伤》
北大核心
1996年第3期129-132,共4页
Occupational Health and Damage
