接触水泥生产性粉尘量与尘肺发病的剂量—反应关系研究  

Relationship between dust exposure dose and prevalence rate of puenmoconiosis in cement plants

作　　者：谢丽莉[1] 廖家武[1] 庞武贵[1] 肖汉林[1] 蒙进军[1] 李志荣[1] 

机构地区：[1]广西玉林市疾病预防控制中心,537000

出　　处：《广西预防医学》2005年第2期82-84,共3页Guangxi Journal of Preventive Medicine

摘　　要：目的探讨水泥生产工人接触水泥生产性粉尘量与尘肺发病关系。方法记录接尘工人的职业史、体检史,累积接尘量由接触时间与接触浓度相乘所得,以寿命表法建立水泥生产性粉尘浓度剂量患病概率直线回归方程式。结果按1%尘肺患病率,工人30年工作年限计算,预测水泥生产性粉尘浓度应低于22.27mg/m3,其中生料工序粉尘浓度应低于13.85mg/m3,熟料工序应低于20.86mg/m3,成品包装工序应低于30.16mg/m3。结论(1)为修订水泥生产性粉尘标准的制订提供科学依据;(2)现行的国家水泥尘卫生标准值得商榷。Obiective To study the dose-response relationship between dust and prevalence rate of pneu- moconiosis in cement plants.Methods The cement dust concentration records of all workplaces and the prevalence rate of pneumoconiosis during the past42years were collected.The amount of acclcumulative exˉposure to dust in workplace air was obtained from exposure concentration multiplied by exposure time.The dose-response relationship between dust concentration in workplace air and prevalence rate of pueumoconiosis was established by the method of life table.Results The maximum allowable dust concentratiom was predicted as22.27mg/m 3 ,therefore,the firstly technics,secondly technics and thirdly technics dust concentrations in workˉplace air should be controlled below13.85mg/m 3 ,20.86mg/m 3 and30.16mg/m 3 respectively,according to the presumption that the workers would work for30years and the prevalence rate of pneumoconiosis would be conˉtrolled under1%.Conclusions(1)The results provide the scientific enidence for revising hygienie stanˉdard of dust in cement workplace air.(2)the present hygienic standard of cement dust(MAC)of our country needs to be further studied.

关 键 词：水泥生产性粉尘 接尘量 尘肺 剂量-反应关系 

分 类 号：R135.2[医药卫生—劳动卫生]