Measures δ18O and δ2H for Isotopic H2O
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The Picarro L2130-i isotope analyzer provides high quality measurements of water stable isotopes for demanding applications such as paleoclimatology, hydrology, and oceanography. δ18O and δ2H high-precision measurements can be made with water samples from liquids, vapor, and solids, using a variety of Picarro peripherals.
- High-precision measurements of δ18O and δ2H
- Minimal drift: calibrate once per day while measuring with sub per mil certainty
- Flexibility to measure water samples from liquids, vapor, and solids
- Small footprint, robust design, and intuitive user-interface
Precision with a liquid sample is guaranteed to be 0.025/0.1‰ for δ18O/δ2H, and drift, over 24 hours, is guaranteed to be 0.2/0.8‰ for δ18O/δ2H. Vapor specifications include a measurement range from 1,000 to 50,000 ppm, with guaranteed precision at 2,500 ppm of 0.250/0.080‰ for δ18O (for 10/100 seconds) and 1.600/0.500‰ for δ2H (for 10/100 seconds), and guaranteed precision at 12,500 ppm of 0.120/0.040‰ for δ18O (for 10/100 seconds) and 0.300/0.100‰ for δ2H (for 10/100 seconds).
New Measurement Modes on L2130-i and L2140-i Analyzer Offers Higher Throughput
New 'Express mode' will allow measurements of up to 50 samples per day while maintaining excellent precision.
The new 'Survey mode' will allow measurements of up to 150 samples per day. Table 1 preliminarily compares the performance of the existing modes with our new methodologies for increased throughput.
Table 1: Comparison of preliminary results of measurement modes
Mode | Injection volume (µL) | Measurement time (min) | Samples/day | δ¹⁸O precision [%] | δ2H precision [%] |
---|---|---|---|---|---|
Current specifications | 1.8 | 54 | 27 | 0.025 | 0.1 |
Standard mode | 1.8 | 54 | 27 | 0.01 | 0.05 |
Express mode | 1.8 | 28 | 50 | 0.01 | 0.05 |
Survey mode | 2.5 | 9.5 | 150 | 0.05 | 0.11 |