期刊名称：International Journal of Occupational Hygiene
印刷版ISSN：2008-5109
电子版ISSN：2008-5435
出版年度：2010
卷号：2
期号：2
页码：74-78
出版社：Tehran University of Medical Sciences
摘要：The present study aimed at assessing cement dust exposure and its relationship to lung function at a Portland cement factory in Ilam, Iran. Lung function tests were carried out on 112 workers at the cement factory in 2008-09. Simultaneously 85 non exposed workers were used as control. Lung function tests were performed for all subjects. Additionally, total dust level was determined by the gravimetric method. Moreover, X-ray diffraction (XRD) technique was performed to determine the SiO 2 contents of the bulk samples. The arithmetic means (AM) of personal total dust were higher in the crusher (27.49 mg/m 3 ), packing (16.90 mg/m 3 ), kiln (15.60 mg/m 3 ), cement mill (13.07 mg/m 3 ), raw mill (10.31 mg /m 3 ) than in the maintenance (3.14 mg /m3), and administration (1.55 mg/m 3 ). The geometrical mean (GM) concentration was 12.12 mg/m 3 , which were considerably higher than occupational exposure limit (OEL) of the American Conference of Governmental Industrial Hygienists (ACGIH), which is 10 mg/m 3 . Based on the results, the probability of the long-term mean exposure exceeding to the OEL of 10 mg/m 3 for total dust were higher in the kiln (100%), packing (100%), cement mill (90%), crusher (73%), raw mill (60%) than in the maintenance (0%), and administration (2.3%). Ventiliatory function evaluation, as measured by the function parameters, showed that 35.7% of the exposed workers had abnormality in lung function compared with 5.7% of those unexposed. Statistical analysis of the data indicated that exposed workers compared to the unexposed groups showed significant reductions in Forced Expiratory Volume in one second percent (FEV 1 ), Forced Vital Capacity (FVC), and FEV 1 /FVC ( p < 0.05).
关键词：Portland cement dust;Total dust;Lung function impairment;Iran
