杭州市区广播电视类辐射源对环境影响的调查

Survey on environment effects of electromagnetic radiant point of urban area in Hangzhou

目的:调查杭州市区广播电视类电磁辐射源对环境的影响。方法:采用8712型电磁辐射检测仪(narda)进行辐射源周围环境辐射强度测量。结果:中波辐射源对环境的影响与辐射源的功率、测定点与辐射源距离密切相关:辐射源的功率越大,其影响的范围愈广;距离辐射源愈近,辐射强度愈大,随着距离增加辐射强度逐渐下降。超短波及微波辐射源对环境影响与距离密切相关:距离愈近,强度相对越大,但随着距离的增加,强度迅速下降。结论:杭州市区的中波辐射源周围一定范围内存在电磁辐射强度超标现象,超短波及微波辐射源周围环境电磁辐射强度符合卫生标准。

Objective：To investigate the environment effects of electromagnetic radiant point of radio and television of urban area in Hangzhou city. Methods： Using the electromagnetic radiation detector to measure the radiation intensity of environment around the electromagnetic radiant points. Results ： The effects on the surrounding environment of the medium - wave radiant points is closely related with the power of the radiant points, and the distance to radiant points ： the incidence decided by power of radiant point, and the intensity decrease with increasing of distance. The effects on the surrounding environment of the ultrashort wave and microwave radiant points is closely related with the distance to radiant points, the intensity decrease sharply with increasing of distance. Conclusion： The intensity around the medium - wave radiant points was impermissibly high, but the intensity around the ultrashort wave and microwave radiant points lower than the national relevant standards.