Atmospheric polycyclic aromatic hydrocarbons in Seoul, Korea
Atmospheric polycyclic aromatic hydrocarbons in Seoul, Korea
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DOI：
10.1016/s1352-2310(02)00206-6
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发表时间：
2002-06-01
影响因子：
5
通讯作者：
Kang, CH
中科院分区：
文献类型：
--
作者：
Park, SS;Kim, YJ;Kang, CH
每日颗粒物和气相多环芳烃（PAH）的样品收集在首尔，韩国，在1998年10月和1999年12月之间的五个密集的采样活动在城市网站。采用超声波和超临界流体萃取法，分别对石英纤维过滤器和PUF塞上采集的多环芳烃样品进行了萃取。通过GC/MSD/SIM分析，研究区大气中PAH浓度的季节变化趋势主要受化石燃料使用、边界层高度和气温的影响。根据测量结果计算的苯并[a]芘相对含量和颗粒有机碳与元素碳的比值表明，光氧化作用不是夏季采样期间PAH浓度变化的重要因素。通过主成分因子分析确定的各因子的特定PAH与气象参数之间的相关性研究表明，温度和相对湿度对半挥发性PAH、PHEN和FLT的影响较大，而对较重的PAH、B（B + k）F和BghiP的影响较小，（C）2002 Elsevier Science Ltd.版权所有。
Daily particulate- and vapor-phase polycyclic aromatic hydrocarbons (PAH) samples were collected at an urban site in Seoul, Korea, during five intensive sampling campaigns between October 1998 and December 1999. PAH samples collected on quartz fiber filters and PUF plugs were first extracted using dichloromethane with ultrasonication and supercritical fluid extraction methods. respectively, and then analyzed by GC/MSD/SIM, Seasonal trends in atmospheric PAH concentrations in the study area were highly influenced by fossil fuel usage for domestic heating, boundary layer height, and air temperature. The relative benzo[a]pyrene amount and particulate organic to elemental carbon ratio calculated from the measurement results suggested that photo-oxidation is not an important factor in the variation of PAH concentrations during the summer sampling periods. Correlation studies between specific PAH of the individual factors identified by principal component factor analysis and meteorological parameters revealed that both temperature and relative humidity gave greater effects on the semi-volatile PAH, PHEN and FLT, rather than on the heavier PAH, B(b + k)F and BghiP, (C) 2002 Elsevier Science Ltd. All rights reserved.