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为了解过磷酸钙生产过程中含氟粉尘和氟化物气体对工人健康的影响,对该厂43名工人作了调查。车间内空气中氟化物浓度均在最高容许浓度范围内,其中以皮带输送机旁和混化工段较高,分别为0.7mg/m~3和0.4mg/m~3;作业工人尿氟含量较对照为高,经统计学处理二者差别有非常显著意义,(t=5.768,p<0.01);不同工种时间加权浓度平均值与尿氟含量间呈等级相关,(Rs=0.886,p=0.05),每个工人时间加权浓度与尿氟间关系经统计学处理呈显著性正相关,(r=0.4275,p<0.05,y=0.7441+1.1435x);每个工人氟
To understand the health effects of fluorine-containing dust and fluoride gases on calcium phosphate production, 43 workers at the plant were investigated. The concentration of fluoride in the air in the workshop was within the maximum allowable concentration range, of which, 0.7mg / m ~ 3 and 0.4mg / m ~ 3 were higher near the belt conveyor and the mixing section, respectively; (T = 5.768, p <0.01). The average value of time-weighted concentration in different types of work was positively correlated with urinary fluoride content (Rs = 0.886, p = 0.05 ), And the relationship between the time-weighted concentration of each worker and urinary fluoride was statistically significant (r = 0.4275, p <0.05, y = 0.7441 + 1.1435x)