Trace metal and organic iron ligand data collected during the PLUME RAIDERS cruise (RR2106) on the R/V Roger Revelle from 18 September – 6 November 2021 along the 16-18ºS section of the Southern East Pacific Rise.

This dataset includes the concentrations of total dissolvable iron and manganese, dissolved iron and manganese, and dissolved organic iron-binding ligands collected on the PLUME RAIDERS expedition. Samples were collected during the PLUME RAIDERS cruise (RR2106) on the R/V Roger Revelle from 18 September – 6 November 2021. The main study area was located along the 16-18ºS section of the Southern East Pacific Rise, and the sampling was focused near the ride crest at depths below 1,500 m. Both the total dissolvable and dissolved iron and manganese concentrations were determined shipboard using flow injection analysis. The total organic iron-binding ligand data was generated both shipboard and in the lab using competitive ligand exchange adsorptive cathodic stripping voltammetry. The siderophore concentrations were measured following a solid phase extraction step, and then eluents were measured using inductively coupled plasma mass spectrometry. The dissolvable and dissolved metal data was generated by Dr. Joe Resing and Nathan Buck at NOAA-PMEL and the ligand and siderophore data was generated by Dr. Laura Moore and Dr. Randelle Bundy at the University of Washington.

本数据集涵盖PLUME RAIDERS科考航次采集的总溶解性铁、锰浓度，溶解性铁、锰浓度，以及溶解性有机铁结合配体浓度数据。
本次采样依托PLUME RAIDERS科考航次（航次编号RR2106）开展，于2021年9月18日至11月6日搭乘罗杰·雷维尔号（R/V Roger Revelle）研究船完成。研究核心区域位于东太平洋南缘南纬16°至18°断面，采样重点聚焦于1500米水深以下的洋脊峰顶附近海域。
总溶解性与溶解性铁、锰浓度均采用流动注射分析（flow injection analysis）在科考船上完成测定。有机铁结合配体总浓度数据则分别通过船上实验室与岸基实验室，采用竞争性配体交换吸附阴极溶出伏安法（competitive ligand exchange adsorptive cathodic stripping voltammetry）生成。铁载体浓度先经过固相萃取步骤预处理，随后通过电感耦合等离子体质谱法（inductively coupled plasma mass spectrometry）对洗脱液进行检测。
溶解性金属浓度数据由美国国家海洋和大气管理局太平洋海洋环境实验室（NOAA-PMEL）的乔·雷辛博士与内森·巴克完成生成；配体与铁载体浓度数据则由华盛顿大学（University of Washington）的劳拉·穆尔博士与兰德尔·邦迪博士生成。