Characteristics of atmospheric aerosols containing heavy metals measured on Fukue Island, Japan
Characteristics of atmospheric aerosols containing heavy metals measured on Fukue Island, Japan
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DOI：
10.1016/j.atmosenv.2014.05.008
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发表时间：
2014-11-01
影响因子：
5
通讯作者：
Hatakeyama, Shiro
中科院分区：
文献类型：
--
作者：
Hidemori, Takehiro;Nakayama, Tomoki;Hatakeyama, Shiro
为了研究东亚地区细颗粒气溶胶的输送和化学成分，于2010年春季在印度尼西亚的努埃岛进行了气溶胶化学成分及其混合状态的测量。离线化学分析，使用离子色谱分析仪和电感耦合等离子体质谱仪的气溶胶采样的大容量采样器也进行了。利用激光电离单颗粒气溶胶质谱仪（LISPA-MS）研究了铅（Pb）和钒（V）颗粒物的混合状态和数量浓度的时间变化。由LISPA-MS测量的含Pb粒子数浓度的时间变化与由大容量采样器采样的气溶胶的化学分析所获得的结果是一致的。在实验室实验的基础上，根据单粒子质谱的统计分析，将含Pb粒子分为四种类型。据估计，52%的观测到的颗粒物中含有铅来自燃煤。浓度加权轨迹（CWT）分析表明，这些颗粒物主要来自中国大陆。含V颗粒分为三种类型。41%的含钒颗粒物内部与海盐混合，CWT分析的结果表明，潜在的人为含钒颗粒物排放的船舶可能与海盐在高负荷的海盐在太平洋地区的混合。(C)2014爱思唯尔有限公司版权所有。
To investigate transport and chemical compositions of fine aerosols in the East Asian region, aerosol chemical components and their mixing states were measured at Fukue Island in the spring of 2010. Offline chemical analyses using an ion chromatographic analyzer and an inductively coupled plasma mass spectrometer for the aerosols sampled by a high volume sampler have also been conducted. The mixing state and temporal variation of number concentrations of the particles containing lead (Pb) and vanadium (V) were studied by using a laser ionization single particle aerosol mass spectrometer (LISPA-MS). The temporal variation of number concentrations of particles containing Pb measured by the LISPA-MS is well consistent with those obtained by the chemical analysis of the aerosols sampled by the high volume sampler. The Pb-containing particles were classified into four types from the statistical analysis on the basis of the single-particle mass spectra with assists of laboratory experiments. It is estimated that 52% of observed particles containing Pb were originated from coal combustion. The concentration-weighted trajectory (CWT) analysis suggests that these particles are mainly transported from China continent. The V-containing particles were classified into three types. The 41% of V-containing particles were internally mixed with sea salt and the result of CWT analysis suggests that the potentially anthropogenic V-containing particles possibility emitted from ships are mixing with sea salt in the region that is highly loaded with sea salt in the Pacific Ocean. (C) 2014 Elsevier Ltd. All rights reserved.