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Stable Isotope Lab

Instrument /Facilities available:

Isotope Ratio Mass Spectrometer

Gas Bench (GB):  working in Continues Flow with Delta V plus

  • δ13C and δ18O in carbonates
  • δ13C(DIC), δ18O, and δD in water

Elemental Analyzer (EA):  working in Continues Flow with Delta V plus

  • δ13C, δ15N, and δ18O in sediments (excluding silicate fractions)

Kiel Carbonate (KC):  working in Dual Inlet with MAT 253 plus

  • δ13C and δ18O in carbonates for very small amount of sample(i.e. forums)

Laser Fluorination (LF):  working in Dual Inlet with MAT 253 plus

  • δ18O in silicate fractions
Details of Sample preparation for the analysis:

Gas Bench (GB):

  • δ13C and δ18O in carbonates
    Pure Carbonates fine powered samples are required
  • δ13C(DIC) , δ18O, and δD in water
    Filtered (using nylon filter), and unfiltered samples can be analyzed

Elemental Analyzer (EA):

  • δ13C in bulk (inorganic + organic), δ18O in bulk and δ15N
    Fine powder samples are required
    For δ18O, remove silicate fractions also
  • δ13C and δ18O in organic fractions
    De-carbonated fine powder samples are required

Kiel Carbonate (KC):   For high Isotope Precision in small amount of carbonates such as forums, enamel etc.

  • Pure carbonate and cleaned powered samples are required.
  • Forums must be cleaned without powered

Laser Fluorination (LF):  silicate fractions

  • Individual silicate mineral must be separated from the rocks using magnetic, gravity, and density separation techniques.
  • Separated diatoms, and radiolarians can also be analysed.
A short guide regarding how to prepare and send samples:

Samples must be stored in air tight vials. Samples must be prepared by the user for any type of analysis as describe above before sending to the lab.

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