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
![_DSF1149_0 _DSF1149_0](/images/default-source/facilities-images/new/dsf1149-0.jpeg?sfvrsn=167813d5_2)
MAT253
![IMG_5794 IMG_5794](/images/default-source/facilities-images/new/img-5794.jpeg?sfvrsn=381f084_2)
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
![_DSF1241_0 _DSF1241_0](/images/default-source/facilities-images/new/dsf1241-0.jpeg?sfvrsn=b0dd875c_2)
Thermo DELTA V with GasBench
![_DSF1251_0 _DSF1251_0](/images/default-source/facilities-images/new/dsf1251-0.jpeg?sfvrsn=ba36c286_2)
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
![_DSF1181_0 _DSF1181_0](/images/default-source/facilities-images/new/dsf1181-0.jpeg?sfvrsn=ceccbb94_2)
Picarro L2130-i Analyzer with a diffusion sampler
![_DSF1184_0 _DSF1184_0](/images/default-source/facilities-images/new/dsf1184-0.jpeg?sfvrsn=4fc40676_2)
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
![_DSF1174_0 _DSF1174_0](/images/default-source/facilities-images/new/dsf1174-0.jpeg?sfvrsn=4a67f0c1_2)
Picarro L2140-i with vaporizer
![_DSF1180_0 _DSF1180_0](/images/default-source/facilities-images/new/dsf1180-0.jpeg?sfvrsn=f2f6f896_2)
Picarro L2140-i with vaporizer
![IMG_5798 IMG_5798](/images/default-source/facilities-images/new/img-5798.jpeg?sfvrsn=72fef2d0_2)
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
![_DSF1198_0 _DSF1198_0](/images/default-source/facilities-images/new/dsf1198-0.jpeg?sfvrsn=7fda5ab4_2)
Thermo iCap 6500 (ICP-OES)
![_DSF1204_0 _DSF1204_0](/images/default-source/facilities-images/new/dsf1204-0.jpeg?sfvrsn=a4b5557a_2)
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
![IMG_5793 IMG_5793](/images/default-source/facilities-images/new/img-5793.jpeg?sfvrsn=b2e9d6c7_2)
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)
![DSF1209 DSF1209](/images/default-source/facilities-images/new/dsf1209.jpeg?sfvrsn=6006fe57_2)
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
![_DSF1227-3 _DSF1227-3](/images/default-source/facilities-images/new/dsf1227-3.jpeg?sfvrsn=ee900a42_2)
DSLS 3000 MicroMill
![DSF1218-1 DSF1218-1](/images/default-source/facilities-images/new/dsf1218-1.jpeg?sfvrsn=53cab97d_2)
D&D Bench Drill (Hand Drill)
![DSF1188 DSF1188](/images/default-source/facilities-images/new/dsf1188.jpeg?sfvrsn=28e881aa_2)
METTLER TOLEDO balance
![DSF1164-1 DSF1164-1](/images/default-source/facilities-images/new/dsf1164-1.jpeg?sfvrsn=55b084f_2)
Rosabelle preparing standard solution for ICP-OES analysis
![DSF1231-1 DSF1231-1](/images/default-source/facilities-images/new/dsf1231-1.jpeg?sfvrsn=680e3ec5_2)
Taufiq and Sujata, two Ph.D students, examining coral images