Public sector

Measurement of air samples for isotopic composition of CΟ (δ13C, δ18O) at Utrecht University.

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.

PACS-C2 provides the possibility of testing new instrumentation and to perform (inter)calibrations or intercomparisons. 
Existing standard operation procedures can be used for comparison of new with established analytical techniques/instruments with the user.  

Custom experiments on aerosol chemistry and physics: ChAMBRe is a multi-purpose facility connected to a laboratory fully equipped for aerosol sampling and characterization. Nature Based Solutions (NBS) tests. 
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, Aurora 4000 nephelometer, 7-wavelength CASS system; sampling on filters/impactors and off-line analyses by Multi Wavelength Absorbance Analyzer (MWAA), Broadband Light Analyzer of Complex Aerosol (BLAnCA) and two-lambda thermo-optical analysis. 

 

Testing/characterization/calibration of bioaerosol on-line monitors/sensors: injection of different bacteria strains and measurement of the detectors response, testing of selection/identification algoritms, comparison with WIBS-NEO response, possibility to include fungi and pollens.  

 

Measurement of bacteria viability vs. atmospheric and air quality conditions: injection of viable bacteria through different nebulizer, production in the chamber of different atmospheric conditions and composition (meteo-climatic, gaseous and aerosol species concentration), monitoring of the bacteria concentration via particle counters and WIBS, collection of viable bacteria through Andersen impactor, liquid impingers, petri dishes, filters. Incubation and counting, microscopic characterization. 
 

LACIS-T provides the possibility of testing (new) instrumentation (e.g., velocity, temperature, humidity, as well as optical particle sensors) and to perform sensor intercomparisons under well-defined laboratory conditions. 
Existing standard operation procedures can be used for comparison of new with established instruments by the user.