Complexation and Speciation of Copper and Iron in the Western South Atlantic

Donat本研究将考察不同输入对西大西洋铜和铁的络合和形态的影响，以及它们的络合配体的浓度和络合常数。这项工作还将确定溶解铂在这些水域的垂直和水平分布，以帮助阐明其“真实”分布。这项研究是在1996年政府间海洋学委员会第三次在南西部和赤道大西洋进行微量金属和有机污染物基线考察时进行的。巡航路线提供了从南大西洋西部边界流，亚马逊羽流（高水平悬浮沉积物，陆生有机配体和胶体物质），ITCZ（撒哈拉沙尘的高湿沉积）和赤道大西洋上升流带（低水平有机配体？）的详细地表水样带收集样本的机会。这项研究与海洋学委员会考察的目标是一致的，即尽可能多地确定世界海洋主要水团的污染物特征，以便查明人类活动的未来变化。

9523124 Donat This study will examine the influence of various inputs on the complexation and speciation of copper and iron, and the concentrations and complexation constants of their complexing ligands in the western Atlantic. The work will also determine the vertical and horizontal distribution of dissolved platinum in these waters, to help elucidate its "true" distribution. This research is performed on the third Intergovernmental Oceanographic Commission (IOC) Baseline Expedition for Trace Metals and Organic Contaminants in the western South and equatorial Atlantic, for 1996. The cruise track provides opportunities to collect samples from a detailed surface water transect across the western boundary currents in the South Atlantic, the Amazon plume (high levels of suspended sediment, terrestrial organic ligands, and colloidal matter), the ITCZ (high wet deposition of Saharan dust), and the equatorial Atlantic upwelling zone (low levels of organic ligands?). The study is consistent uith the goal of the IOC expeditions which is to characterize the major water masses of the world's oceans for as many contaminants as possible to allow future changes in anthropogenic activities to be identified.