title: The monitoring results of electromagnetic radiation of 110-kV high-voltage lines in one urban location in Chongqing P.R. China.
abstract: To understand electromagnetic radiation field strength and its influencing factors of certain 110-kV high-voltage lines in one urban area of Chongqing by measuring 110-kV high-voltage line's electromagnetic radiation level. According to the methodology as determined by the National Hygienic Standards, we selected certain adjacent residential buildings, high-voltage lines along a specific street and selected different distances around its vertical projection point as monitoring points. The levels of electromagnetic radiations were measured respectively. In this investigation within the frequency of 5-1,000 Hz both the electric field strength and magnetic field strength of each monitoring sites were lower than the public exposure standards as determined by the International Commission on Non-Ionizing Radiation Protection. However, the electrical field strength on the roof adjacent to the high-voltage lines was significantly higher than that as measured on the other floors in the same buildings (p < 0.05). The electromagnetic radiation measurements of different monitoring points, under the same high-voltage lines, showed the location which is nearer the high-voltage line maintain a consistently higher level of radiation than the more distant locations (p < 0.05). Electromagnetic radiation generated by high-voltage lines decreases proportionally to the distance from the lines. The buildings can to some extent shield (or absorb) the electric fields generated by high-voltage lines nearby. The electromagnetic radiation intensity near high-voltage lines may be mitigated or intensified by the manner in which the high-voltage lines are set up, and it merits attention for the potential impact on human health.
authors.affiliation: Department of Labor Sanitation and Environment, the School of Public Health, Chongqing Medical University, PoBox119, No.1 Yixueyuan Road, Yuzhong District, Chongqing, 400016, Peoples Republic of China. xiaozhong419@yahoo.com.cn
authors.forename: Qi-Zhong
authors.initials: QZ
authors.lastname: Qin
authors.forename: Yu
authors.initials: Y
authors.lastname: Chen
authors.forename: Ting-Ting
authors.initials: TT
authors.lastname: Fu
authors.forename: Li
authors.initials: L
authors.lastname: Ding
authors.forename: Ling-Li
authors.initials: LL
authors.lastname: Han
authors.forename: Jian-Chao
authors.initials: JC
authors.lastname: Li
mesh_terms: D002681:China; D002947:Cities; D004559:Electric Wiring; D004574:Electromagnetic Fields; D060733:Electromagnetic Radiation; D004781:Environmental Exposure; D006801:Humans; D011210:Power Plants; D011834:Radiation Monitoring