Services

Measurement of gas samples for clumped isotopic composition of CH4 (Δ13CDH3 and ΔCD2H2) at Utrecht University.
These measurements can be used for determining methane formation temperatures and non-thermodynamic equilibrium processes. 
Samples should be provided in suitable flasks. The concentration needed is typically > 5%, and it may be possible to analyze samples with CH4 as low as 0.5 %, upon discussion. One analysis needs at least 5 ml STP of pure methane. The samples should always be discussed in advance. 

TIME CONSTRAINTS: Possible long waiting times

Measurement of air samples and calibration of cylinders for isotopic composition of CH4 (δ13C and δD) at Utrecht University.
These measurements can be used for source attribution and isotope budgeting. 
Atmospheric samples should be provided in clean glass or metal flasks, suitable bags or cylinders in which CH4 is stable. 
Samples from other media (water, sediments, etc.) can be analyzed as well. Specification of the sample containers and expected concentrations is beneficial.

Intercomparison campaigns. Comparison with AGORA instruments that follow ACTRIS protocols, in situ, remote sensing at urban (UGR) and mountain (SNS, CP) conditions.

Custom experiments on aerosol chemistry and physics: ChAMBRe is a multi-purpouse facility connected to a laboratory fully equipped for aerosol sampling and characterization. 
Specific experiments/tests can be organized with the support of the ChAMBRe teams. 
 

Testing and calibration of aerosol samplers and aerosols/gas monitors (e.g. low-cost detectors): connection/introduction of the samplers/detectors to/in the chamber, production of different aerosol and gas species, comparison of the detectors response with those of the ChAMBRe reference equipment. 
 

Multi-wavelength on-line and off-line measurement of the optical properties (absorption and scattering) of atmospheric aerosols: injection of different aerosol species (soot, dust, salt, organic), modulation of the meteo-climatic conditions, on-line measurement by 3-lambda photoacoustics monitors (PAXs), OPS and SMPS, sampling on filters/impactors and off-line analyses by Multi Wavelength Absorbance Analyzer (MWAA)and two-lambda thermo-optical analysis.