Processes Affecting the Speciation of Iodine in the Oceans

影响海洋中碘形态的过程

• 批准号: 9301298
• 负责人: George Wong
• 金额: $ 37.77万
• 依托单位: Old Dominion University Research Foundation
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-08-01 至 1998-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9301298&HistoricalAwards=false
• 关键词: Processes; Affecting; Speciation; Iodine; Oceans

\9301298 Wong Iodine can be found in seawater as IO3- and I- although I- is thermodynamically unstable relative to IO3. Although iodine is the most abundant biophilic minor element in the ocean and the distribution of IO3- and I- in the open oceans are relatively well known, direct evidence on the processes that may control its speciation is largely incomplete. Preliminary data from the South Atlantic Bight and East China Sea suggest that IO3- may be reduced to I- preferentially in the shelf-seas. Within the shelf, the reduction may be especially efficient in the inner shelf and the adjoining marshes and lagoons. Thus, during the exchanges between the marginal seas and the ocean interior, IO3- rich water may be added to the shelf while I- rich water may be exported to the ocean interior. This model will be tested with additional field observations to assess the relative importance of biological and non-biological processes in controlling the reduction of IO3-.

电话：+86-021 - 8888888 碘可以在海水中以IO 3-和I-的形式存在，尽管I-相对于IO 3是化学不稳定的。 虽然碘是海洋中最丰富的亲生物微量元素，并且IO 3-和I-在开阔海洋中的分布相对众所周知，但关于可能控制其物种形成的过程的直接证据在很大程度上是不完整的。 在南大西洋湾和东海的初步资料表明，在陆架海中，IO 3-可能优先被还原为I-。 在大陆架内部，减少可能在大陆架内部和邻近的沼泽和泻湖中特别有效。 因此，在边缘海与大洋内部交换的过程中，富碘水可能被加入陆架，而富碘水可能被输出到大洋内部。该模型将通过额外的现场观察进行测试，以评估生物和非生物过程在控制IO 3-减少方面的相对重要性。