IODP Expedition 374 Elemental analysis (CHNS)

• Main Authors: McKay, Robert M., De Santis, Laura, Kulhanek, Denise K., Ash, Jeanine L., Beny, François, Browne, Imogen M., Cordeiro de Sousa, Isabela M., Cortese, Giuseppe, Dodd, Justin P., Esper, Oliver M., Gales, Jenny A., Harwood, David M., Ishino, Saki, Keisling, Benjamin A., Kim, Sookwan, Kim, Sunghan, Laberg, Jan S., Leckie, R. M., Müller, Juliane, Patterson, Molly O., Romans, Brian W., Romero, Oscar E., Sangiorgi, Francesca, Seki, Osamu, Shevenell, Amelia, Singh, Shiv M., Sugisaki, Saiko T., van de Flierdt, Tina, van Peer, Tim E., Xiao, Wenshen, Xiong, Zhifang
• Other Authors: International Ocean Discovery Program
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2019
• Subjects: International Ocean Discovery Program; IODP; JOIDES Resolution; Expedition 374; Site U1521; Site U1522; Site U1523; Site U1524; Site U1525; Ross Sea; climate and ocean change; sea level; ocean chemistry; deep biosphere; West Antarctic; ice sheet; sea ice; Antarctic Bottom Water; ice-rafted debris; Antarctic water masses; Antarc*; Antarctic; Ice Sheet; Sea ice
• Online Access: https://doi.org/10.5281/zenodo.6515280

Fundamental elemental component (total carbon, hydrogen, nitrogen, and sulfur) fluctuations help define the origin, depositional environment, and diagenetic alteration of source materials. To determine C, H, N, and S, solid samples are reacted with a catalyst, separated by chromatography, and detected by thermal conductivity on a FlashEA 1112 CHNS elemental analyzer. Organic carbon can be directly measured on the elemental analyzer by acidification of the sample to drive off carbonate as carbon dioxide before analyzing. Total organic carbon on this report is measured rather than calculated.