Purdham J T, Bozek P R, Sass-Kortsak A
Occupational and Environmental Health Unit, University of Toronto, Canada.
Ann Occup Hyg. 1993 Feb;37(1):35-44. doi: 10.1093/annhyg/37.1.35.
Epidemiological studies of the lung cancer experience of workers in the printing industry have been inconclusive. Where there have been positive findings, the effect has generally been attributed to polycyclic aromatic hydrocarbon (PAH) exposure, although no exposure measurements were made. This study was undertaken to determine the exposures of printing press operators to PAH and total particulate (TP), and to evaluate the factors contributing to exposure. Personal time-weighted average exposures of press room workers were determined on two consecutive days at nine sites, including two newspaper operations. The average PAH exposure was 16.5 micrograms m-3 (including naphthalene). The average TP exposure was 0.63 mg m-3. Examination of the data revealed that there were significant differences between sites for exposure both to TP and to PAH. Newspaper plants had significantly lower exposures than commercial printing operations. There were no significant differences in exposure between the various job classifications of workers in the press rooms. Factors identified as contributing to exposure to TP were: the effectiveness of the ventilation systems, the method of feeding the press, the type of paper and the print impression area.
对印刷行业工人肺癌患病情况的流行病学研究尚无定论。在有阳性研究结果的地方，尽管未进行暴露测量，但这种影响通常归因于多环芳烃（PAH）暴露。本研究旨在确定印刷机操作员接触PAH和总颗粒物（TP）的情况，并评估导致暴露的因素。在包括两家报纸印刷厂在内的九个场所，连续两天测定了印刷车间工人的个人时间加权平均暴露量。PAH的平均暴露量为16.5微克/立方米（包括萘）。TP的平均暴露量为0.63毫克/立方米。对数据的检查显示，各场所之间TP和PAH暴露存在显著差异。报纸印刷厂的暴露量明显低于商业印刷企业。印刷车间不同工种工人的暴露量没有显著差异。确定与TP暴露有关的因素有：通风系统的有效性、给印刷机供料的方式、纸张类型和印刷压印面积。
