Stable isotope laboratory

Sample forms-Measurements
Elem Analyser-IRMS
Gas Bench-IRMS
High Temperature Conversion Elemental Analyzer (TC/EA)-IRMS

The laboratory has a Thermo Finnigan Delta plus XP isotope ratio mass spectrometer (IRMS), which is specially designed for measurement of light environmental stable isotopes 2H, 13C, 15N, 18O, 34S is a sensitive and selective instrument with application in hydrology, geology, environmental protection, radwaste management.

The IRMS is a universal tool for 13C/12C, 15N/14N, 18O/16O, 34S/32S, and 2H /1H determination in dual inlet and continuous flow modes.

Prior to stable isotope ratio measurements different samples has to be brought in gaseous form. A host of preparation methods have been developed and improved to convert different sample compounds to an appropriate gas including H2,CO, CO2, N2, and SO2.

Sample forms Minimal Average
Water samples (δ18O, δ2H) 0.2 ml airtight bottle 0.5 l
Ammonia of water samples (δ15N) 1.5-2.5 mg/l NH4+ (3 l) 5 l
Nitrate of water samples(δ15N) 6-11 mg/l NO3- (3 l) 5 l
Carbonate t (δ13C) 10 mg 1 g

Organic samples (δ13C, δ18O, δ15N, δ34S)

1 g 10 g
Sulphide formed BaSO4 (δ34S) 10 mg 1 g
Sulfate formed BaSO4 (δ34S) 10 mg 1 g
Carbonate from water 0.5 l 0.5 l
Honey 50 g 250 g


2016 © | All rights reserved | Minden jog fenntartva! | arttitude design