Laboratory for Environmental and Sedimentary Isotope Geochemistry (LESIG)

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Instrument

The GV Isoprime isotope ratio mass spectrometer along with the Dual Inlet, MultiPrep, Eurovector Elemental Analyser (EuroEA3028-HT) and Liquid AutoSampler (EuroAS300) is capable for us to determine all the five light element (H, C, N, O & S) isotopic compositions in the microgram/microlitre level of solids and liquids, and inorganic and organic substances (almost everything except silicates), such as carbonates, sulfates, sulfides, nitrates, phosphates, soils, sediments, corals, forams, shells, tree rings, plants, pollens, bones, hairs, ice cores, waters, oils, etc. For more info, contact ...

 

Instrument Performance
Species

External Precision
(‰)

Sample Size Sample Type Method

CO2 ( δ13C)

0.019 (<0.03)

>25 µg

pure CaCO3 (sample size for bulk samples is up to their CaCO3 content) DI MultiCarb

CO2 ( δ18O)

0.058 (<0.05)

CO2 ( δ13C)

0.04 (<0.05)

>10 µg

CO2 ( δ18O)

0.07 (<0.07)

CO2 ( δ13C)

0.1

>2 µg

CO2 ( δ18O)

0.1

CO2 ( δ18O)

0.044 (<0.05)

200 µl

water DI AquaPrep

H2 ( δD)

0.607 (<1.00)

H2 ( δD)

0.480 (<0.5)

0.2 µl water EA Chrome HD

H2 ( δD)

1.033 (<3.0)

50 – 200 µg solid matter EA Pyrolysis

CO ( δ18O)

<0.2 (<0.3)

0.3 µl water EA-LAS Pyrolysis

CO ( δ18O)

<0.2 (<0.3)

50 – 200 µg

solid matter EA Pyrolysis

CO2 ( δ13C)

0.145 (<0.3)

50 – 200 µg

organic matter EA Combustion

N2 ( δ15N)

0.167 (<0.3)

SO2 ( δ34S)

<0.1 (<0.4)

50 – 200 µg

solid matter EA Combustion

The numbers in the brackets in External Precision column are the GV IsoPrime performance specifications.

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