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

南大西洋西部铜和铁的络合和形态

• 批准号: 9523124
• 负责人: John Donat
• 金额: $ 16.06万
• 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: 1995
• 资助国家: 美国
• 起止时间: 1995-11-01 至 1998-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9523124&HistoricalAwards=false
• 关键词: Complexation; Speciation; Copper; Iron; Western

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.

小行星9523124 本研究将探讨各种输入对铜和铁的络合和形态的影响，以及它们在西大西洋的络合配体的浓度和络合常数。 这项工作还将确定这些沃茨中溶解铂的垂直和水平分布，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（海委会）西南大西洋和赤道大西洋痕量金属和有机污染物基线考察第三次考察中进行的。巡航跟踪提供了机会，收集样品从一个详细的地表水横断面横跨西边界电流在南大西洋，亚马逊羽流（高水平的悬浮沉积物，陆地有机配体，胶体物质），ITCZ（高湿沉积撒哈拉灰尘），和赤道大西洋上升流区（低水平的有机配体？）。这项研究与海委会考察的目标是一致的，即尽可能多地确定世界各大洋主要水团的污染物特征，以便确定人类活动的未来变化。