Aniołczyk H, Zymślony M
Non-Ionizing Radiation Laboratory, Nofer Institute of Occupational Medicine, Lodz, Poland.
Int J Occup Med Environ Health. 1994;7(1):33-9.
In Poland, 28 AM radio stations operate at frequencies from 738 kHz to 1602 kHz with output powers ranging from 1 kW to 750 kW. Altogether 384 workers are employed at those radio stations. Levels of exposure to electromagnetic fields (EMF) were identified at 5 of those radio stations, separately for 3 groups of workers, i.e. operation, maintenance, and administration. Electric and magnetic field intensities: E (in V/m) and H (in A/m), and the effective time of individual worker's exposure to EMF were assessed. The assessments were carried out independently by the conventional (MEH-1 plus stop-watch) and computer-aided (Holaday Programmable Recorder) methods. The study provided reliable data on the actual time of worker's exposure to EMF of exactly determined intensities. The study indicated a wide range of different exposure levels between individual groups of workers, which depended rather on a particular AM broadcast station and the type of job performed by individual groups of workers' than on the transmitter power or the type of protective zones in the vicinity of transmitters.
在波兰，28个调幅广播电台的工作频率为738千赫至1602千赫，输出功率从1千瓦至750千瓦不等。这些广播电台总共雇佣了384名员工。在其中5个广播电台，针对运营、维护和行政3类不同工种的员工，分别测定了他们接触电磁场（EMF）的水平。评估了电场强度E（单位：伏/米）和磁场强度H（单位：安/米）以及每名员工接触电磁场的有效时间。评估分别通过传统方法（MEH - 1加上秒表）和计算机辅助方法（霍拉迪可编程记录仪）独立进行。该研究提供了关于员工接触精确测定强度电磁场的实际时间的可靠数据。研究表明，不同工种员工之间的接触水平差异很大，这更多地取决于特定的调幅广播电台以及各工种所从事的工作类型，而非发射机功率或发射机附近保护区的类型。
