globalchange  > 气候变化事实与影响
DOI: 10.1016/j.atmosenv.2014.06.047
Scopus记录号: 2-s2.0-84903374758
论文题名:
Air ion mobility spectra and concentrations upwind and downwind of overhead AC high voltage power lines
作者: Wright M; D; , Buckley A; J; , Matthews J; C; , Shallcross D; E; , Henshaw D; L
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 95
起始页码: 296
结束页码: 304
语种: 英语
英文关键词: Charged particles ; Corona discharge ; Electrical mobility ; Ion-aerosol attachment ; Power lines ; Small ions
Scopus关键词: Aerosols ; Atmospheric humidity ; Charged particles ; Electric corona ; Negative ions ; Corona discharges ; Electrical mobility ; Ion aerosol attachment ; Power lines ; Small ions ; Electric lines ; anion ; aerosol ; air quality ; concentration (composition) ; corona ; dispersion ; electrical property ; mobility ; power line ; air ; alternating current ; article ; atmospheric dispersion ; controlled study ; electric potential ; high voltage power line ; ion mobility spectrometry ; measurement ; meteorology ; priority journal ; steady state ; surface property ; velocity ; water vapor ; England ; United Kingdom
Scopus学科分类: Environmental Science: Water Science and Technology ; Earth and Planetary Sciences: Earth-Surface Processes ; Environmental Science: Environmental Chemistry
英文摘要: Corona ions produced by high-voltage power lines (HVPLs) can alter the nearby electrical environment, potentially increasing aerosol charge levels downwind. However, there is a lack of knowledge concerning the concentration and mobility of ions from AC HVPLs and their dispersion away from the line. We present ion concentration and mobility measurements made near AC HVPLs in South-West England. Examples of typical mobility spectra are shown highlighting features commonly observed. Corona was observed during 33 of 46 measurements, at 9 of 11 sites, with positive or 'bipolar' (both polarities) ion production commonly seen. Ion production usually increases atmospheric concentrations by only a modest amount, but extreme cases can enhance concentration by an order of magnitude or more. A polarity imbalance is required to increase aerosol charge via ion attachment; this was observed on 15 of 24 days when positive corona was observed, but was not seen for negative ions. Ion mobility was higher downwind compared with upwind for both ion polarities, but the increase was not statistically significant. Future work should focus on identifying and characterising 'heavy-producing' HVPLs, and obtaining results in conditions which may favour negative ion production e.g. high humidity, inclement weather or during nighttime. © 2014 Elsevier Ltd.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/80967
Appears in Collections:气候变化事实与影响

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作者单位: H.H. Wills Physics Laboratory, University of Bristol, Tyndall Avenue, Bristol BS8 1TL, United Kingdom; Atmospheric Chemistry Research Group (ACRG), School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, United Kingdom

Recommended Citation:
Wright M,D,, Buckley A,et al. Air ion mobility spectra and concentrations upwind and downwind of overhead AC high voltage power lines[J]. Atmospheric Environment,2014-01-01,95
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