Rubén Campanero Nieto
The laboratory/Stable isotopes biogeochemistry group has methodologies for the analysis of stable isotopes (18O/16O, 13C/12C, 15N/14N, 2H/1H and 34S/32S) in water, silicates, phosphates, carbonates, nitrates, sulfates, sulfides, organic matter and specific compounds, VOC (Volatile Organic Carbon), methane and NMHCs (non-methane hydrocarbons), DOC (Dissolved Organic Carbon), DIC (Dissolved Inorganic Carbon), atmospheric gases (CO2, O2, N2, Ar), etc.
The laboratory is equipped with 6 IRMS mass spectrometers (Delta V, Delta Plus XP, 3 Delta XL and Finnigan MAT 253) connected with various peripherals that allow the analysis of the isotopic ratios (13C/12C, 18O/16O, 15N/14N, 34S/32S and D/H) in different compounds; 4 laser systems (Picarro G1101-i, Picarro G2201-i, Picarro L2140-i and DLT-100 Los Gatos Research) are dedicated to the isotopic analysis of CO2 in air and isotopic analysis of water (vapour and liquid).
This configuration allows us to analyze stable isotopes (C, N, H, O) in carbonates, DIC in continental and marine waters, oxygen in water, dissolved oxygen in water (focused in the study of GPP-18 (Gross Primary Production), methane, NMHCs, VOC, specific compounds in organic matter (n-alkenes, amino acids, etc.), nitrates, N2O, etc.
A double-entry system that allows a high-resolution isotope analysis in CO2 and O2. “Clumped Isotopes” of CO2 allow the calculation of paleotemperatures without having to assume the water with which carbonate was in equilibrium. The “clumped-isotopes” of O2 are helpful for studying the balance between photosynthesis and respiration in different marine and continental ecosystems.
Responsible technician: Arsenio Granados Torres
Scientific advisor: Antonio Delgado Huertas