Development of sequential injection analaysis (SIA) techniques for trace element determinations in oceanography

关于铁的催化流动注射分析(FIA)方法适应性的初步工作表明，在停流模式下使用微量顺序注射分析(USIA)可产生检测限，从而能够在不进行预浓缩的情况下在开阔的海洋水平上测定铁。夏威夷大学的科学家计划继续他们充满希望的前期工作，充分评估这种方法在微量元素测定方面的潜力，并确定其是否适合长期远程部署。最初，研究人员计划将N，N-二乙基-对苯二胺铁法应用于顺序进样分析，然后再采用现有的流动注射分析锌的方法。开发新的分析痕量金属技术是重要的，特别是在GEOTRACES计划的背景下。至于更广泛的影响，一名研究生将作为该项目的一部分得到支持和培训。

Preliminary work on the adaptation of the catalytic Flow Injection Analysis (FIA) method for iron suggests that using micro sequential injection analysis (uSIA) in a stopped-flow mode yields detection limits that would enable the determination of iron at open ocean levels without preconcentration. Scientists from the University of Hawaii plan to continue their promising preliminary work and fully evaluate the potential of this methodology for trace element determinations, as well as establish its suitability for long term remote deployment. Initially, the researchers plan to complete their adaptation of the N,N-diethyl-p-phenylenediamine iron method to sequential injection analysis before adapting the available FIA methodology for Zn. Development of new analytical trace metal techniques is important especially in light of the GEOTRACES program. As regards broader impacts, one graduate student would be supported and trained as part of the project.