Effects of Trajectory Wind Direction on Ion Concentration of PM_(10)

作     者：XIAO-ZHEN LIU STEVE SMITH 

作者机构：Department of Environmental Engineering College of Environment and Chemical Engineering Nanchang Institute of Aeronautic Technology 173 Shanghai Road Nanchang 330034 Jiangxi China Division of Life Sciences Kings College London Franklin-Wilkins Building 150 Stamford Street London SE1 9NN UK 

出 版 物：《Biomedical and Environmental Sciences》 (生物医学与环境科学（英文版）)

年 卷 期：2006年第19卷第4期

页      面：262-267页

核心收录：

学科分类：0710[理学-生物学] 071010[理学-生物化学与分子生物学] 07[理学] 

基　　金：This work was supported by China Scholarship Council 

主　　题：Ion concentration PM10 Trajectory wind direction 

摘      要：Objective To study the characterization apportionment of main ion concentrations of PM10 under the influence of trajectory wind direction in London. Methods PM10 samples from 1 May 1995 to 30 October 1995 of Oxford Street of Central London were collected, the metals and anions of which were measured using atomic absorption spectrometry （AAS） and ion chromatography （IC）. Composite trajectories representative of the air mass arriving in London at the same period were calculated based on basic routine back trajectories from the British Atmospheric Data Centre （BADC）. Results Concentration apportionments of main ions were similar when the trajectory was plotted back at 6 h, 12 h, and 24 h, some were obviously different. Mg, Ba, Pb, and Cu had similar peak apportionments at the area 180°-320°, but Zn and Ni at the area of 90°-270°, NO3^- and SO4^2- at the area of 100°-220°. Cl^- concentration peak apportionment was at the area of 220°-300°, which showed that Cl^- mainly came from the North Sea. Conclusion Trajectory wind direction has important effect on ion concentration apportionment of PM10 in London. The ions have similar concentration peak apportionments or their correlation coefficients are statistically significant.