Utrecht University – Institute for Marine and Atmospheric research Utrecht (IMAU)

PO Box 80005, 3508 TA Utrecht
Princetonplein 5, 3584 CC Utrecht, NL

Contact
Prof. Dr. Thomas Roeckmann
T.Roeckmann@uu.nl
31(0)302533858

Research line
Atmospheric Research

Topics
Investigation of the global hydrogen cycle with isotope measurements
– Source apportionment of carbon aerosol by ¹⁴C measurements and modeling
– Inverse modeling of methane using isotopes
– Mass Independent Fractionation (INTRAMIF project):
* CO₂+O₃ isotope exchange via O(1D) and stratospheric CO₂
* Mass Independent Fractionation in Atmospheric Carbon Monoxide and the reaction CO+OH
* Isotope effects in ozone formation and destruction reactions
– Historical budgets of methane and nitrous oxide using air trapped in ice cores
– Isotope measurements on volatile organic compounds in the atmosphere
– Study of the hydrological cycle using new satellite-borne isotope measurements

Isotopes
¹³C, ¹⁵N, ¹⁷O, ¹⁸O, ²H, ¹⁴C

²H (H₂, CH₄, H₂O), ¹⁴C (C, CH₄), ¹⁷O and ¹⁸O (CO₂, CO)^{, 17}O (O₃), ¹⁵N (N₂O)

Instruments
DI-IRMS, GC/IRMS, GC/C/IRMS, GC/P/IRMS

ThermoFinnigan DeltaPlus XL, dual inlet
ThermoFinnigan DeltaPlus XL, continuous flow, 2×
Thermo DeltaV Advantage, continuous flow?
DeltaPlus XP, continuous flow, 2×