©2020 Biological and Chemical Oceanography Data Management Office.Funded by the U.S. National Science Foundation
©2020 Biological and Chemical Oceanography Data Management Office.This equipment removes dissolved gases from the water samples, traps the extracted compounds on a cold trap and then heats the trap and injects the trapped gases into the gas chromatograph. It is automated and controlled by a laptop computer.
| Dataset Name | PI-Supplied Description | PI-Supplied Name |
|---|---|---|
| Nitrous oxide (N2O) concentrations and associated physicochemical parameters from R/V Atlantis cruise AT15-61 in Jan-Feb 2010 and R/V Melville cruise MV1104 in Mar-Apr 2011 in the Eastern Tropical South Pacific (ETSP) | custom automated purge and trap inlet system | |
| Concentrations of CFC-11, CFC-12, CFC-113 and SF6 in seawater from the GEOTRACES-Arctic program, aboard RV/HLY-1502, 2015. | ||
| CFC-12, CFC-11, and SF6 concentrations from the US GEOTRACES Pacific Meridional Transect (PMT) cruise (GP15) from September to November 2018 | custom-built purge and trap gas chromatography with electron capture detection | |
| Nitrous oxide (N2O) isotopes and concentrations from the U.S. GEOTRACES EPZT cruise (GP16, TN303) on R/V Thomas G. Thompson in the tropical Pacific from October to December 2013 | This equipment removes dissolved gases from the water samples, traps the extracted compounds on a cold trap and then heats the trap and injects the trapped gases into the gas chromatograph. It is automated and controlled by a laptop computer. | custom automated purge and trap inlet system |
| Nitrite (NO2-) isotopes and concentrations from the U.S. GEOTRACES EPZT cruise (GP16, TN303) on R/V Thomas G. Thompson in the tropical Pacific from October to December 2013 | This equipment extracts dissolved gases from the water samples, traps the extracted compounds under liquid nitrogen temperature, and then releases the trapped gases into the gas chromatograph and then to the Isotope Ratio Mass Spectrometer via an open split (McIlvin and Casciotti, 2011). It is automated and controlled by a desktop computer and ISODAT 3.0 software. | custom purge and trap gas bench connected to an isotope ratio mass spectrometer |
| Nitrogen isotope ratios (δ15N) in amino acid standards and in four field-collected samples | Isotope determinations were made at the University of Massachusetts Dartmouth using a GV IsoPrime IRMS, a custom purge-trap sample preparation system, and a CTC PAL autosampler. Reproducibility was better than ± 0.5‰. | custom purge-trap sample preparation system |