Analytical Services of the Geochemistry and Isotope Geology Department

Carbonate isotope analyses (δ¹³C and δ¹⁸O)

• Thermo Kiel IV coupled to Finnigan DeltaPlus gas mass spectrometer
• 60-70 µg carbonate, finely ground
• Please contact Prof. Andreas Pack for requesting machine time
• Orders can be submitted online here (you will receive a username and password from Prof. A. Pack)
• For technical questions and enquiries about analytical procedures, please contact David Bajnai
• Costs for scientific projects: 10 € plus 20% programme overhead
• Commercial analyses cost: 55 € plus 20% programme overhead
• Detailed instruction manual for the Thermo Kiel IV
• Quick guide for performing measurements (in German)
• The instrument may only be operated after induction by experienced personnel

Carbonate triple oxygen isotope analyses (δ¹⁸O and δ¹⁷O)

• TILDAS (IR absorption spectroscopy
• 10 mg carbonate for a single replicate analysis
• Please contact Prof. Andreas Pack for requesting machine time
• For technical questions please contact David Bajnai
• Costs for scientific projects: 80 € plus 20% programme overhead
• Costs for commercial analyses: 96 € plus 20% programme overhead

Silicate and oxide isotope analysis (δ¹⁷O, δ¹⁸O, continuous flow)

• CO₂ laser fluorination (F₂) coupled to Thermo MAT253 gas mass spectrometer
• 0.05-1 mg silicate or oxide
• Please contact Prof. Andreas Pack for requesting machine time
• Please contact Dennis Kohl for questions regarding technology, analytical prcedures and scheduling
• Costs for scientific projects: 40 € plus 20% programme overhead (per analysis)
• Costs for commercial clients: 110 € plus 20% programme overhead (per analysis)
• The instrument may only be operated after induction by experienced personnel

Silicate and oxide isotope analysis (δ²⁹Si, δ³⁰Si, high-precision Δ³⁰Si)

• CO₂ laser fluorination (F₂ or BrF₅) coupled to Thermo MAT253 gas mass spectrometer (dual inlet mode, 120 minutes)
• Gas chromatographic purification of the sample gas (Hewlett Packard 5890 gas chromatograph)
• 2-3 mg silicate or oxide
• Please contact Prof. Andreas Pack for requesting machine time
• Please contact Dennis Kohl for questions regarding technology, analytical prcedures and scheduling
• Costs for scientific projects: 80 € plus 20% programme overhead (per analysis)
• Costs for commercial clients: 220 € plus 20% programme overhead (per analysis)
• The instrument may only be operated after induction by experienced personnel

Silicate isotope analysis (δ²⁹Si, δ³⁰Si, high-precision Δ³⁰Si)

• CO₂ laser fluorination (F₂ or BrF₅) coupled to Thermo MAT253 gas mass spectrometer (analysis by SiF₃, dual inlet mode, 120 minutes)
• 2-3 mg Silicate
• Please contact Prof. Andreas Pack for requesting machine time
• Please contact Dennis Kohl for questions regarding technology, analytical prcedures and scheduling
• Costs for scientific projects: 80 € plus 20% program-overhead (per analysis)
• Costs for commercial clients: 220 € plus 20% program-overhead (per analysis)
• Combined O and Si isotope analyses on request
• The instrument may only be operated after induction by experienced personnel

in-situ silicate and oxide isotope analysis (δ¹⁷O, δ¹⁸O)

• UV laser fluorination coupled to Thermo MAT253 gas mass spectrometer
• Approx. 250 um spot diameter
• Please contact Prof. Andreas Pack for requesting machine time
• Please contact Dennis Kohl for questions regarding technology, analytical prcedures and scheduling
• Costs for scientific projects: 400 € plus 20% programme overhead (per measuring day)
• Costs for commercial clients: 1200 € plus 20% programme overhead (per measuring day)
• The instrument may only be operated after induction by experienced personnel

Scanning electron microscopy

• Leo 1455 VP scanning electron microscope
• BSE & SE pictures
• EDS analyses and element distribution images
• Please contact Dr. Tommaso Di Rocco for questions regarding technology, analytical procedures and scheduling
• Costs for scientific projects: 50 € plus 20% programme overhead (per measuring day)
• Costs for commercial clients: 600 € plus 20% programme overhead (per measuring day)

High temperature gas mixing furnace

• Gero HTRV furnace, 60 mm opening, T_max = 1700°C
• Use only on request and following induction into the system
• Responsible for the operation Dr. Tommaso Di Rocco
• Operating instructions for the furnace
• Operating instructions for the Eurotherm controller

Major element composition of silicate samples

• PANalytical AXIOS-Advanced X-ray fluorescence spectrometer
• 5 g of finely-ground (< 100 μm) rock powder
• Preparation of fused tetraborate glass discs
• Standard element spectrum
• Please contact Prof. Matthias Willbold for any enquiries

⁸⁷Sr/⁸⁶Sr and ¹⁴³Nd/¹⁴⁴Nd isotopic composition

• ThermoFisher Scientific Neptune Plus
  
• 10 to 100 mg of finely-ground (< 100 μm) rock powder depending on sample
  
• Other matrices on request
  
• Please contact Prof. Matthias Willbold for any enquiries
  

¹⁴⁷Sm/¹⁴⁴Nd and ⁸⁷Rb/⁸⁷Sr age determination

• ThermoFisher Scientific Neptune Plus and ThermoFisher Scientific Element2
  
• 10 to 100 mg of finely-ground (< 100 μm) rock powder depending on sample
  
• Other matrices on request
  
• Please contact Prof. Matthias Willbold for any enquiries
  

Trace element analysis by ICPMS (geological samples)

• ThermoFisher Scientific iCAP-Q or Element2
  
• Standard element spectrum
  
• 10 to 100 mg of finely-ground (< 100 μm) rock powder depending on sample
  
• Other matrices on request
  
• Please contact Prof. Matthias Willbold for any enquiries
  

Trace element analysis by LA-ICPMS (silicate and carbonate samples)

• ThermoFisher Scientific iCAP-Q or Element2 and Resonetics Resolution M50
  
• Standard element spectrum
  
• Suitable sample preparation required (polished sections, grain mounts, etc.)
  
• Other matrices on request
  
• Please contact Prof. Matthias Willbold for any enquiries
  

Isotope analysis by MC-ICPMS and TIMS (silicate and carbonate samples)

• ThermoFisher Scientific Neptune Plus, Triton or MAT 262
  
• Radiogenic and non-radiogenic isotope systems commonly used in isotope geochemistry
  
• Other matrices and isotope systems on request
  
• On collaboration basis only
  
• Please contact Prof. Matthias Willbold for any enquiries