©2026 Biological and Chemical Oceanography Data Management Office.Funded by the U.S. National Science Foundation
©2026 Biological and Chemical Oceanography Data Management Office.An elemental analyzer that simultaneously determines the total carbon, hydrogen, nitrogen, and sulfur in a small solid or liquid sample. A sample is put into a tin capsule that is placed in the combustion tube. Here, the sample is in an oxygen-rich gas stream, which causes flash combustion of the tin capsule, and in turn, the sample is rapidly combusted. The resulting gases are separated on a packed gas chromatography column and quantified using a thermal conductivity detector. The instrument was originally manufactured by Carlo-Erba, which has since been replaced by Thermo Scientific (part of Thermo Fisher Scientific). This model is no longer in production. It is also possible to determine oxygen with a modification to the systems configuration. Analysis times: CHN in 7 min, S in 5 min and O in 6 min. Range: 10 ppm to 100%.
| Dataset Name | PI-Supplied Description | PI-Supplied Name |
|---|---|---|
| N2 Fixation Rates Collected on STINGI and STINGII Cruises aboard the R/V Atlantic Explorer, cruise AE2305, and the R/V Endeavor, cruise EN704, on the West Florida Shelf | Solid natural abundance samples analyzed at USF used a Thermo Delta+XL IRMS w/ continuous-flow inlet coupled to a Carlo-Erba 1108 EA | Carlo-Erba 1108 EA |
| Suspended particle total mercury and monomethylmercury in the California Current Ecosystem (CCE) determined from samples collected on R/V Roger Revelle cruise RR2105 (P2107) in July to August 2021 | Carlo Erba 1108 elemental analyzer |