Carbon Dioxide Isotope Analyzer - Elevated CO2

LGR’s new “Carbon Dioxide Isotope Analyzer - Elevated CO2“ provides many features that researchers need when measuring isotopic carbon dioxide from samples containing high levels of CO2 including:

• Ultra-low drift and high precision
• Ability to measure CO2 as well as δ13C and δ18O in CO2 from 2% to 100% CO2
• Ability to analyze acidified carbonates
• Ability to analyze breath (human, mice)
• Fast response

The new Analyzer meets all of the needs for effective measurements of isotopic carbon dioxide, including: (1) accurate measurements over a wide range of mole fractions, (2) high precision, (3) ability to report reliable values even if mixing ratios are rapidly changing, (4) portability (low power), (5) user-friendly interface, (6) low drift / high stability. In addition, the availability of many value-added options extends the abilities of the unit to include discrete samples (collected in bags or vials, for example) and to automatically handle multiple inlet sources.

The Analyzer uses LGR’s patented Off-axis ICOS technology, a fourth-generation cavity enhanced absorption technique. Off-axis ICOS has many advantages over conventional Cavity Ringdown Spectroscopy (CRDS) techniques such as being more robust mechanically and thermally, having a much shorter measurement time, and not requiring expensive and power consuming auxiliary components. As a result, LGR instruments provide unsurpassed performance, durability and ease of use.

• Simultaneous measurements of δ13C, δ18O in carbon dioxide
• Wide range of CO2 mole fractions: 2-100%
• New Enhanced-Performance model provides unsurpassed stability
• Widest temperature range: 0 – 45 °C
• Isotopic measurements of carbonates
• Isotopic measurements unaffected by rapid changes in mole fractions
• High-resolution absorption spectra viewable and accessible always
• (Optional) Manual injection of discrete gas samples

LGR’s new “Carbon Dioxide Isotope Analyzer - Elevated CO2“ provides many features that researchers need when measuring isotopic carbon dioxide from samples containing high levels of CO2 including:

• Enhanced Performance package provides ultra-low drift and high precision
• Ability to measure CO2 as well as δ13C and δ18O in CO2 from 2% to 100% CO2
• Ability to analyze acidified carbonates
• Ability to analyze breath (human, mice)

The stable isotope composition of carbonate minerals has been of interest for decades, with initial research focusing on measurements of carbonates in the ocean for paleoceanography applications. Stable isotope studies of carbonates have also been used extensively to explore the role of fluid-rock reaction and geosphere-hydrosphere-atmosphere interactions in the earth and environmental sciences. To date, conventional analyses involve acidification of a carbonate sample to produce CO2, followed by measurements with IRMS. While effective, IRMS requires a trained operator, is expensive, and cannot be performed in the field.

LGR’s new “Carbon Dioxide Isotope Analyzer - Elevated CO2“ provides measurements of δ13C and δ18O as well as mixing ratios of 13CO2, 12CO2, and 12C18O16O in gas samples with high precision in measurement times of less than a minute in an easy-to-use, field portable unit. Due to its inherently fast time response, the instrument provides δ13C and δ18O measurements over a wide range of even when CO2 values change rapidly as often happens during field studies.

The new Analyzer meets all of the needs for effective measurements of isotopic carbon dioxide, including: (1) accurate measurements over a wide range of mole fractions, (2) high precision, (3) ability to report reliable values even if mixing ratios are rapidly changing, (4) portability (low power), (5) user-friendly interface, (6) low drift / high stability.

In addition, the availability of many value-added options extends the abilities of the unit to include discrete samples (collected in bags or vials, for example) and to automatically handle multiple inlet sources.

The Analyzer uses LGR’s patented Off-axis ICOS technology, a fourth-generation cavity enhanced absorption technique. Off-axis ICOS has many advantages over conventional Cavity Ringdown Spectroscopy (CRDS) techniques such as being more robust mechanically and thermally, having a much shorter measurement time, and not requiring expensive and power consuming auxiliary components. As a result, LGR instruments provide unsurpassed performance, durability and ease of use.

• Measures δ13C, δ18O, 12C16O2, 13C16O2, 12C18O16O at 1 Hz
• 12CO2,13CO2, and C18OO from 2% to 100% CO2
• Analysis of carbonate minerals
• Analysis of breath (mice, humans)
• Simultaneous measurements of all gases provides maximum accuracy even when CO2 levels vary rapidly
• High-resolution absorption spectra are viewable for real-time diagnostics
• Low power: ideal for field apps
• Enhanced Performance package provides unprecedented stability, precision and low drift.
• (Option) Manual injection of discrete gas samples

• Precision (1s, 100 sec):
  • δ13C: 0.2‰
  • δ18O: 0.6‰
  • C16O2: 20 ppm
• Measurement Rates:
  • All parameters measured simultaneously at rates up to 1 Hz
• Measurement Range (meets all specs):
  • CO2 : 2% – 100%
  • Operational Range
  • CO2 : 0 – 100%
• Response time (time to register 95% of a step change):
  • δ13C, δ18O: 1 second
  • [12C16O2], [13C16O2], [12C18O16O]: 1 second
  • Note: requires (optional) 4-head diaphragm pump (accessory)
• Max Drift at STP (peak-to-peak, 1 hr average over 24 hours):
  • δ13C: < 0.5‰
• Sampling Conditions:
  • Sample Temperature: -20 – 50 °C
  • Operating Temperature: 0 – 45 °C
  • Ambient Humidity: non-condensing (0-100% RH)
• Outputs:
  • digital (RS232), Ethernet, USB
• Power Requirements:
  • 115/230 VAC, 50/60 Hz 165 W
• Dimensions:
  • 11” × 38” × 22” (Enhanced Performance package)
• Weight:
  • 50 kg (Enhanced Performance package)