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Mass spec­tro­metry fa­cil­ity

Mass spectrometry facility

Stable iso­topes such as 15N or 13C are im­port­ant tools which can be used to trace biogeo­chem­ical re­ac­tions, en­abling the iden­ti­fic­a­tion and quan­ti­fic­a­tion of mi­cro­bial pro­cesses in near in­situ con­di­tion. We meas­ure both the in­cor­por­a­tion of stable iso­topes into mi­cro­bial bio­mass and the trans­form­a­tions of labeled com­pounds between one form and an­other (i.e. the re­duc­tion of NO3- to N2) us­ing a vari­ety of iso­tope ra­tio meas­ur­ing (IRMS) tech­niques.For more in­form­a­tion on the mi­cro­bial pro­cesses we are in­ter­ested in and the ap­plic­a­tions of iso­tope ra­tio mass spec­tro­metry within our de­part­ment please visit our projects page.We use the fol­low­ing in­stru­ments in our group for the ana­lysis of dif­fer­ent iso­topes from solid, li­quid or gaseous samples.

 
 

Delta Plus XP coupled to a Flash EA 112

Iso­topic ra­tio mass spec­tro­meter coupled to an ele­mental ana­lyzer for the ana­lysis of δ13C and δ15N on solid samples.
 
 

IsoPrime100 combined with a Trace Gas

Mul­ti­col­lector iso­topic ra­tio- mass spec­tro­meter for gas ana­lysis of N2, N2O, NO, O2, CH4 and iso­to­pomers on wa­ter or gas samples at low (nanomolar) con­cen­tra­tions.
 
 

Picarro G2201

Cav­ity Ring-Down Spec­tro­meter for car­bon iso­tope ana­lysis, it is coupled to an auto sampler (Auto­mate FX) for dual or single δ13C iso­topic ana­lysis of CO2 (DIC) and CH4 from wa­ter or gas samples.
 
 

GAM200 InProcess Instrument

A mem­brane in­let mass spec­tro­meter (MIMS) en­abling us to do on­line, real time meas­ure­ments of 29+30N2, O2 and Ar, with a vari­ety of cus­tom­ized set-ups. Other ap­plic­a­tions in­clude for ex­ample la­beling per­cent­age meas­ure­ments of N2 for N2-fix­a­tion ex­per­i­ments.
 

Technician

Biogeochemistry Group

Gabriele Klockgether

MPI for Marine Microbiology
Celsiusstr. 1
D-28359 Bremen
Germany

Room: 

3132

Phone: 

+49 421 2028-6420

Gabriele Klockgether
 
 
 
 
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