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目的长期追踪火力发电厂煤尘对作业工人健康的影响情况。方法调查187名在职火力发电厂燃料车间工人为接尘组和80名非接触尘毒职工为对照组,分别比较10年前后的职业健康状况。同时测定生产环境中粉尘浓度及二氧化硅含量。结果生产环境粉尘中游离SiO2含量3.48%,粉尘浓度0.5~37.4mg/m3,合格率82.16%。接尘组职业健康体检主要阳性结果中慢性咽炎、鼻炎、肺通气功能减退等检出率十年后明显增加,小气道功能减退出现得比较早。结论火力发电厂低浓度煤尘对长期作业工人健康的主要影响是引起呼吸道慢性炎症和肺功能减退。应加强防护措施。
Purpose Long-term follow-up of coal-fired power plants on the health of workers affected the situation. Methods A total of 187 workers in the on-site fuel-fired power plant were surveyed as dust-catching workers and 80 non-contact dust-polluting workers as controls to compare the occupational health status after 10 years. Simultaneous determination of dust concentration and silica content in the production environment. Results In the production environment, the content of free SiO2 in the dust was 3.48% and the dust concentration was 0.5 ~ 37.4mg / m3 with a pass rate of 82.16%. The main positive results of occupational health examination in the dust exposure group were that the detection rate of chronic pharyngitis, rhinitis and hypogonadal function increased obviously ten years later, and the decline of small airway function appeared earlier. Conclusions The main impact of low concentration coal dust on the health of long-term workers in coal-fired power plants is the chronic airway inflammation and lung hypofunction. Should strengthen protective measures.