Seasonal and interannual variation of dissolved iodine speciation at a coastal Antarctic site
Seasonal and interannual variation of dissolved iodine speciation at a coastal Antarctic site
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DOI：
10.1016/j.marchem.2009.11.009
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发表时间：
2010-02-28
期刊：
影响因子：
3
通讯作者：
Rossetti, Helen
中科院分区：
文献类型：
--
作者：
Chance, Rosie;Weston, Keith;Rossetti, Helen
在南极一个沿海地点的表层海水中，溶解碘的形态已经被研究了三个夏季。采样地点具有生物生产力，夏季藻华伴随着物理和化学参数的强烈季节性变化。结果表明，在夏季碘化物浓度增加和碘酸盐浓度减少的季节循环中，尽管这些变化的幅度似乎受到相当大的年际变化的影响。碘浓度非常低，在无冰夏季开始和结束时最低值为10 ~ 20 nM， 2005/06、2006/07和2007/08夏季最高值分别为35 nM、150 nM和82 nM。2005/ 2006年夏季对碘化物和碘酸盐浓度的更详细观察表明，碘化物的积累与综合生物初级生产力密切相关，隐含的I/C同化比为1.6 x 10（-4）。(c) 2009 Elsevier B.V.版权所有
Dissolved iodine speciation in surface seawater at a coastal Antarctic site has been studied over a period spanning three austral summers. The sampling site is biologically productive, with a summertime algal bloom accompanying strong seasonal variations in physical and chemical parameters. The results suggest a seasonal cycle in which iodide concentrations increase and iodate concentrations decrease during the summer, though the magnitude of these changes appears to be subject to considerable interannual variability. Iodide concentrations were typically very low, with minimum values of 10 to 20 nM at the beginning and end of the ice-free summer periods and summertime maxima of about 35 nM in 2005/06, 150 nM in 2006/07 and 82 nM in 2007/08. More detailed observations of iodide and iodate concentrations made during summer 2005/06 demonstrated that the accumulation of iodide was strongly correlated with integrated biological primary productivity, with an implied I/C assimilation ratio of 1.6 x 10(-4). (c) 2009 Elsevier B.V. All rights reserved.