Bravo G, Scaringi M, Vandelli A M, Romanelli A, Rossi P, Gobba F
Cattedra di Medicina del Lavoro, Università di Modena e Reggio Emilia, Modena.
G Ital Med Lav Ergon. 2007 Jul-Sep;29(3 Suppl):424-5.
The aim of our study was to estimate occupational exposure to Extremely Low Frequency-Magnetic Fields (ELF-MF). Using personal dosimeters we evaluated occupational exposure in 543 workers employed in 9 occupational settings (about 150 jobs), representative of the main occupational activities in Emilia-Romagna region. In the whole sample, the median Time-Weighted Average (TWA) exposure resulted 0.14 microT (5 degrees - 95 degrees percentiles: 0.04 - 2.50 microT); Tile production presented the highest occupational setting TWA (0.46 +/- 1.83 microT), while the lower job TWA was Stock Clerk in Tile Production and Stock Clerk in Garment Production. After 6-9 months we repeated measurement in about 10% of the original sample (about 48 subjects) to verify the resulted obtained. At repeated measurement analysis with SPSS 12.0 no variation was found compared the previous monitoring. Individual occupational exposure to ELF-MF evaluated in a relatively large group of workers engaged in the main occupational activities proved low values compared to the proposed occupational limit.
我们研究的目的是评估极低频磁场（ELF-MF）的职业暴露情况。我们使用个人剂量计对艾米利亚-罗马涅地区9种职业环境（约150个工作岗位）中的543名工人的职业暴露进行了评估，这些职业环境代表了该地区的主要职业活动。在整个样本中，时间加权平均（TWA）暴露的中位数为0.14微特斯拉（5% - 95%百分位数：0.04 - 2.50微特斯拉）；瓷砖生产的职业环境TWA最高（0.46 +/- 1.83微特斯拉），而最低的工作岗位TWA是瓷砖生产中的仓库管理员和服装生产中的仓库管理员。6 - 9个月后，我们对约10%的原始样本（约48名受试者）进行了重复测量，以验证所得结果。使用SPSS 12.0进行重复测量分析时，与之前的监测相比未发现差异。在一组从事主要职业活动的相对大量工人中评估的个体职业暴露于ELF-MF的值与建议的职业限值相比证明较低。
