Suarez Fabio L, Yepes Sara M, Escobar Adolfo
Department of Electronics and Telecommunications, Faculty of Engineering, Instituto Tecnologico Metropolitano ITM, Medellin, Colombia.
Advanced Materials and Energy Research Group, Faculty of Engineering, Instituto Tecnologico Metropolitano ITM, Medellin, Colombia.
Heliyon. 2023 Sep 20;9(9):e20323. doi: 10.1016/j.heliyon.2023.e20323. eCollection 2023 Sep.
Exposure to radiofrequency electromagnetic fields (RF-EMFs) is considered an area of significant importance in the medical and scientific community. However, the availability of exposure data for indoor and outdoor locations in universities is limited and currently inconsiderate in Latin America. The aim of this work was to evaluate the electric field levels due to mobile telecommunication technologies and Wi-Fi to which students and faculty staff from two campuses of a higher education institution are exposed. Using a portable spectrum analyzer, we carried out 516 short-term measurements in the 800-3000 MHz frequency range at both indoor and outdoor locations. These locations were chosen to cover all areas of the assessed buildings. The electric field differences between floors and buildings are discussed. Finally, we compared the electric field levels with exposure limits. The highest electric field level measured was 13.97 V/m at the 850 MHz band. However, the average electric field values were below 2 V/m. The greatest contribution to the total electric field was due to sources using the 850 MHz and 1900 MHz bands (98%), while the contribution of the Wi-Fi network was low (1.0%). The results show that all the electric field levels measured were lower than the ICNIRP reference levels for radio-frequency exposure.
暴露于射频电磁场（RF-EMF）在医学和科学界被认为是一个非常重要的领域。然而，拉丁美洲大学室内外场所的暴露数据有限，目前未得到充分考虑。这项工作的目的是评估一所高等教育机构两个校区的学生和教职员工因移动电信技术和Wi-Fi而暴露于其中的电场水平。我们使用便携式频谱分析仪，在800 - 3000 MHz频率范围内的室内和室外场所进行了516次短期测量。这些场所的选择覆盖了被评估建筑物的所有区域。讨论了楼层和建筑物之间的电场差异。最后，我们将电场水平与暴露限值进行了比较。在850 MHz频段测得的最高电场水平为13.97 V/m。然而，平均电场值低于2 V/m。对总电场贡献最大的是使用850 MHz和1900 MHz频段的源（98%），而Wi-Fi网络的贡献较低（1.0%）。结果表明，所有测得的电场水平均低于国际非电离辐射防护委员会（ICNIRP）的射频暴露参考水平。
