Marine Geochemistry Laboratory (MARGE)

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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

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Kiel Device


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

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Thermo DELTA V with GasBench
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Thermo DELTA V with GasBench


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

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Picarro L2130-i Analyzer with a diffusion sampler

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Picarro L2130-i Analyzer with a diffusion sampler



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

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Picarro L2140-i with vaporizer

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Picarro L2140-i with vaporizer

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Picarro L2140-i with standard delivery module (SDM)


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

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Thermo iCap 6500 (ICP-OES)

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Autosampler


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

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Mettler-Toledo XP6 Micro Balance


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)

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Sartorius Micro Balance


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

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DSLS 3000 MicroMill

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D&D Bench Drill (Hand Drill)

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METTLER TOLEDO balance

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Rosabelle preparing standard solution for ICP-OES analysis

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Taufiq and Sujata, two Ph.D students, examining coral images

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