Iodine speciation in marine aerosols along a 30,000 km round‐trip cruise path from Shanghai, China to Prydz Bay, Antarctica
Iodine speciation in marine aerosols along a 30,000 km round‐trip cruise path from Shanghai, China to Prydz Bay, Antarctica
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DOI：
10.1029/2008gl035492
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发表时间：
2008-11
影响因子：
5.2
通讯作者：
S. Lai;T. Hoffmann;Z. Xie
中科院分区：
文献类型：
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作者：
S. Lai;T. Hoffmann;Z. Xie
2005年11月至2006年3月，在从中国上海到南极洲普里兹湾的往返游轮上采集了总悬浮颗粒（TSP）样品。采用离子色谱法与电感耦合等离子体质谱法（IC-ICP-MS）联用测定水溶性碘物质。结果表明，可溶性有机碘（SOI）含量最高，平均约占总可溶性碘（TSI）的70%。几乎所有样品中均存在一个未鉴别的有机碘（UOI）信号，其占TSI的38.3%。无机碘物种碘酸盐和碘化物的丰度小于TSI的30%。碘化物与SOI显着相关，表明碘化物形成和SOI分解之间的联系。TSI水平在整个航程中变化很大。在南极沿海，TSI的增强与来自冰锋区的空气质量输送有关。
Total suspended particle (TSP) samples were collected onboard a round‐trip cruise from Shanghai, China to Prydz Bay, Antarctica from November 2005 to March 2006. Water soluble iodine species were measured using ion chromatography coupled to Inductively Coupled Plasma‐Mass Spectrometry (IC‐ICP‐MS). The results reveal that soluble organic iodine (SOI) is the most abundant fraction, accounting for approximately 70 % of total soluble iodine (TSI) on average. One unidentified organic iodine (UOI) signal was present in almost all of the samples and was responsible for up to 38.3% of TSI. The abundance of inorganic iodine species, iodate and iodide, was less than 30% of TSI. Iodide was significantly correlated with SOI suggesting a link between iodide formation and SOI decomposition. TSI levels varied considerably over the length of the voyage. In the coastal Antarctic enhanced level of TSI were found to be correlated with the air mass transport from the ice front sector.