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.本数据集收录了**PLUME RAIDERS**科考航次中采集的总溶解性铁、锰，溶解性铁、锰，以及溶解性有机铁结合配体的浓度数据。本次采样依托“罗杰·雷维尔号”（R/V Roger Revelle）科考船开展，对应航次为PLUME RAIDERS航次（RR2106），采样时段为2021年9月18日至11月6日。本次研究的主要区域位于东太平洋南翼南纬16°至18°断面，采样重点集中在1500米以下深度的洋脊峰顶附近。总溶解性与溶解性铁、锰浓度均采用流动注射分析法（flow injection analysis）在船上完成测定。溶解性有机铁结合配体总浓度数据则通过竞争性配体交换吸附阴极溶出伏安法（competitive ligand exchange adsorptive cathodic stripping voltammetry），分别在船上及实验室完成测定。铁载体（siderophore）浓度的测定流程为先经过固相萃取步骤，再利用电感耦合等离子体质谱法（inductively coupled plasma mass spectrometry）对洗脱液进行检测。溶解性与溶解态金属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（Dr. Joe Resing）与内森·巴克（Nathan Buck）生成；配体及铁载体数据由华盛顿大学的劳拉·穆尔博士（Dr. Laura Moore）与兰德尔·邦迪博士（Dr. Randelle Bundy）生成。