Marine Geochemistry Laboratory (MARGE)
Dr. Nathalie Goodkin founded the Marine Geochemistry Laboratory (MARGE) at Earth Observatory of Singapore (EOS) in 2012. Currently, MARGE is equipped with a MAT253 with Kiel Device, a Delta V with GasBench, Thermo ICP-OES, a Picarro water analyzer L2130-i, and a Picarro water analyzer L2140-i. MARGE primarily provides the analytical support to the Climate research group at EOS and it can also provide analysis for outside collaborators.
Major Instruments
Isotope Ratio Mass Spectrometers
Thermo MAT253:
• Coupled to a Kiel device
• Dual inlet and continuous flow capabilities
• For high precision and accurate analysis of δ18O and δ13C in carbonate
Thermo DELTA V:
• Coupled to a GasBench
• Continuous flow capabilities only
• For high precision and accuracy analysis of δ18O and δ13C in carbonate, δ13C in DIC and breath samples, and δ18O and δD in water
Laser Spectroscopy Instruments
Picarro L2130-i analyzer:
• Coupled to a standard vaporizer and a diffusion sampler
• For continuous and simultaneous high-precision measurement of δ18O and δD in rain water
• Robust to be used in remote locations and on boats for fieldwork
Picarro L2140-i analyzer:
• Coupled to a standard vaporizer
• For continuous and simultaneous high-precision analysis of triple oxygen isotopes (18O, 17O and 16O) in water
• Can also coupled to a standard delivery module together with the vaporizer for high-precision and accuracy analysis of δ18O and δD in water vapor
• Robust to be used in remote locations and on boats for fieldwork
Inductively Coupled Plasma - Atomic Emission Spectrometer
Thermo iCap 6500 (ICP-OES):
• High-performance optics
• Free, continuous choice of wavelengsths in the range 175-847 nm
• Capable of determining more than 73 elements in seconds
Ancillary Devices
Mettler-Toledo XP6 Micro Balance
• Capacity: 6.1g, Readability: 1μg
• “ionizing units” for anti-static
• Fully automatic adjustment using internal weight
• Glass draft shield for precise weighing even in unstable environments
• Built-in level sensor, illuminated level indicator and leveling assistant for fast and easy leveling
• Two programmable sensors for hands-off operation
Sartorius MSA3.6P-000-DM Micro Balance
• Capacity: 3.1g, Readability: 1μg
• “ionizing units” for anti-static
• Glass draft shield for precise weighing even in unstable environments
• Activated by side keys or touch-free using IR switch (optional)
DSLS 3000 MicroMill System
• A fully desktop machining system with capabilities to produce anything from very simple to very complex geometric forms in all kinds of materials
• Advanced Digital Sync Lock Servo (DSLS) control using the latest microcontroller chip technology
• Position increment resolution 0.000125 in.
• Mechanical repeatability 0.0005 in.
• Travel: X=12”, Y=5.5”, Z=6”
• Rapid traverse speed (G00) up to 100 in/min
