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| CO09: | Getting the Right Number: Precision and Accuracy in Chemical Oceanography |
| Sponsor: |
Chemical Oceanography
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| CoSponsor: |
Biological Oceanography Paleoceanography Marine Technology |
| Convener: |
Gregory Cutter Old Dominion University Dept of Ocean, Earth, and Atmospheric Sciences 4300 Elkhorn Ave. Norfolk, VA, USA 757-683-4929 gcutter@odu.edu Robert Sherrell Rutgers University ICMS Rutgers University 71 Dudley Road New Brunswick, NJ, USA 732-932-6555 x252 sherrell@marine.rutgers.edu |
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4803 4894 4808 4835 4807 .
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| Description: | Accuracy and precision are essential for all biogeochemical studies. Some important chemical species are in extremely low concentration while others require high precision for optimal interpretation. Intercalibration is an active process among laboratories that includes all steps from sampling to analyses, with the goal of achieving the same accurate results regardless of the method or lab. Past intercalibration efforts included examinations of colloids and carbonate system parameters, and more recently the Sampling and Analysis of Iron (SAFe) experiment. The GEOTRACES intercalibration program is currently underway. This session seeks presentations focusing on methods to assess the accuracy and precision of determining various chemical parameters in the ocean (from organics to metals to isotopes in dissolved and particulate phases) and results from intercalibration programs. An important goal will be for attendees to discuss how best to assess accuracy from sampling to analysis when suitable certified reference materials are not available. |