Spanish contribution to the international initiative SASSI (Synoptic Antarctic Shelf Slope Interactions study) - BTL Data

Chla: Spectrofluorophotometer (onboard Hesperides): Shimadzu RS-5301PC Oxigen isotopes (Dr. Niall Slowey, TAMU): Precise measurements of the 18O to 16O ratio of the seawater samples will be made using a dual-inlet isotope ratio mass spectrometer following well-accepted methods. To make these measurements, CO2 gas will be isotopically equilibrated with the sample under controlled conditions in the presence of a catalyst and then transferred to the mass spectrometer for analysis.

Each sample will be analyzed twice, providing a verification of the analysis and yielding a high precision final result. Halocarbon measurements (Dr. Shary Yvon-Lewis, TAMU): Typically we analyze each sample (discrete seawater, air, and equilibrator headspace) for 21 chemical species (HCFC-22, CFC-12, HCFC-142b, Halon-1211, CFC-11, HCFC-141b, CFC-113, CH3CCl3, CCl4, C2Cl4 (PCE), CH3Cl, CH3Br, CH3I, CH2Cl2, CH2Br2, CHCl3, CHBr3, CH2ONO2, C2H4ONO2, i-C3H6ONO2, n-C3H6ONO2).