δ13C and δ18O in carbonates
स्थिर आइसोटोप प्रयोगशाला
Instrument /Facilities available
Isotope Ratio Mass Spectrometer
Gas Bench (GB)
working in Continues Flow with Delta V plus
-
-
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.