Concentrations of total dissolved iron (dFe), dissolved manganese (dMn) and chlorophyll a fluorescence determined for 20 in situ stations sampled during PS97 (2016) and PS112 (2018) ...

• Main Authors: Balaguer, Jenna, Koch, Florian, Hassler, Christel S, Trimborn, Scarlett
• Format: Dataset
• Language: English
• Published: PANGAEA 2021
• Subjects: co-limitation; Phytoplankton composition; Southern Ocean; trace elements; Event label; Latitude of event; Longitude of event; Date/Time of event; Method/Device of event; Iron, dissolved; Manganese, dissolved; Photosynthetic efficiency; Membrane pump; Go-Flo bottles; In situ pump; ICP-MS, Elemental Scientific, seaFAST; Fluorometer, fast repetition rate; PS97; PS112; Polarstern; Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158; Antarctic; Arctic; Ida; Antarc*; Phytoplankton; Sea ice
• Online Access: https://dx.doi.org/10.1594/pangaea.935867; https://doi.pangaea.de/10.1594/PANGAEA.935867

Determination of dissolved trace metals concentration: dFe and dMn concentrations were estimated from the initially sampled seawater. To this end, 100 mL of seawater were filtered through HCl-cleaned polycarbonate filters (0.2 μm pore size) using a TMC Nalgene filtration system and the filtrate was collected into PE bottle and stored triple bagged at 2 ̊C until analysis. Concentrations of the dFe and dMn were determined on a SeaFast system (Elemental Scientific, Omaha, NE, USA) coupled to an inductively coupled plasma mass spectrometer (ICP-MS, Element2, Thermo Fisher Scientific, resolution of R = 2000). During the pre-concentration step, an iminodiacetate (IDA) chelation column (part number CF-N-0200, Elemental Scientific) was used. The pre-filtered seawater samples were acidified to pH=1.7 with a double distilled nitric acid (HNO~3~) and were UV-treated using a 450 W photochemical UV power supply (ACE GLASS Inc., Vineland N. J., USA) to minimize adsorption of TMs onto the bottle walls and to reduce the ...