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氰氨化钙作业的劳动卫生学调查表明,作业环境氰氨化钙混合尘浓度为16.2mg/m~3,工人咳嗽、咯痰的检出率显著高于对照组(P<0.05),肺功能改变以小气道功能MMF、FEF_(50％～75％)降低为显著(P<0.01);X胸片异常改变率明显高于对照组(P<0.01),表现为以不规则形小阴影为主,交织成网,密集度低于国家尘肺诊断标准中的Ⅰ级标准,肺纹理增强、紊乱、扭曲、断裂,其中1人具有Ⅰ期“尘肺样改变”。
Occupational hygiene survey of cyanamide showed that the detection rate of cough and expectoration was significantly higher in workers exposed to calcium cyanamide (16.2 mg / m ~ 3) than that in the control group (P <0.05) The functional changes were significantly reduced with small airway function MMF and FEF_ (50% -75%) (P <0.01). The abnormal rate of X-ray was significantly higher than that of the control group (P <0.01) Mainly interwoven into a network, the concentration is lower than the national pneumoconiosis diagnostic criteria of grade Ⅰ standards, lung texture enhancement, disorder, distortion, fracture, of which 1 person has a “pneumoconiosis-like changes.”