Concentrations of metallic elements in long-range-transported aerosols measured simultaneously at three coastal sites in China and Japan
Concentrations of metallic elements in long-range-transported aerosols measured simultaneously at three coastal sites in China and Japan
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中国和日本三个沿海站点同时测量的远程传输气溶胶中金属元素浓度
DOI：
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发表时间：
2018
影响因子：
2
通讯作者：
S. Hatakeyama
中科院分区：
文献类型：
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作者：
Kojiro Shimada;Xiaoyang Yang;Yushi Araki;A. Yoshino;A. Takami;Xuan Chen;Fan Meng;S. Hatakeyama
为了确定气溶胶从东亚上风区到日本下风区的远距离传输的影响，我们对同时在中国山东省的矶岛、日本长崎县的江岛和日本冲绳县的鹤户角收集的气溶胶进行了化学分析。我们专注于PM2.5气溶胶在长距离传输过程中金属成分的变化。PM2.5的平均质量浓度从高到低的顺序为：托基岛>莫卧儿岛>海多角（48.3 ± 4.5、13.9 ± 1.5和13.2 ± 0.9 μg/m3）。总悬浮颗粒物（1-PM2.5/TSP）估计的粗颗粒的分数是最高的海多角，表明海盐的贡献增加了远程运输的气溶胶在海洋上。富集因子分析表明，在所有三个网站，铝，钾，钙，锰，铁，钴，锶，钡来自土壤，而铬，镍，铜，锌，砷，钼，银，镉，锡，锑，铊，和P似乎是人为的起源。钠是海多角最丰富的元素，表明在气溶胶输送过程中加入了海盐。V的浓度最高的是在马丘比丘岛，这是由于V排放的船舶。经确定，在托基岛和海多角分别有61%和62%的V型气流来自于船只，这意味着在后向轨迹分析表明同一气团依次经过托基岛、托基岛和海多角的日期所获得的数据。
To determine the effects of long-range transport of aerosols from an upwind area in East Asia to a downwind area in Japan, we chemically analyzed aerosols collected simultaneously on Tuoji Island (Shandong Province, China), Fukue Island (Nagasaki Prefecture, Japan), and Cape Hedo (Okinawa Prefecture, Japan). We focused on changes in the metallic composition of PM2.5 aerosols during long-range transport. The average mass concentrations of PM2.5 at the three sites decreased in the order Tuoji Island > Fukue Island ≈ Cape Hedo (48.3 ± 4.5, 13.9 ± 1.5, and 13.2 ± 0.9 μg/m3, respectively). The fraction of coarse particles in total suspended particles estimated by (1–PM2.5/TSP) was highest on Cape Hedo, indicating that the contribution of sea salts was increased by long-range transport of the aerosols over the ocean. Enrichment factor analysis revealed that at all three sites, Al, K, Ca, Mn, Fe, Co, Sr, and Ba originated from soil; whereas Cr, Ni, Cu, Zn, As, Mo, Ag, Cd, Sn, Sb, Tl, and P appeared to be of anthropogenic origin. Na was the most abundant element on Cape Hedo, indicating the addition of sea salts during aerosol transport. The V concentration was highest at Fukue Island, which was ascribed to V emission from ships. Sixty-one percent of the V on Fukue Island and 62% of the V on Cape Hedo were determined to have originated from ships, implicating of data obtained on dates during which backward trajectory analysis indicated that the same air mass passed over Tuoji Island, Fukue Island, and Cape Hedo in that order.
影响因子：
5
作者：
Eyring, Veronika;Isaksen, Ivar S. A.;Stevenson, David S.
通讯作者：
Stevenson, David S.