CN-EA-iRMS
Carbon & nitrogen isotope ratios AND amounts
δ13C & δ15N OR atom%13C & atom%15N
µg C µg N wt%C wt%N C:N
Carbon and nitrogen isotope ratio analysis is a workhorse measurement in Earth and Ocean Sciences, with rapidly expanding application in Ecology and Evolutionary Biology research. These are measured with a CN Elemental Analyzer (CN-EA). Routine sample types at UCSC SiL vary widely and include animal tissues, plant and macroalgae tissues, soils, and sediments. UCSC SiL measures >100 CN-EA samples daily. CN-EA sample measurement rate starts at $6.00 for UC and affiliates or $9.24 for non-affiliates.
Guidelines for preparing CN-EA samples including how to document, package, and ship samples to UCSC SiL for analysis.
Form for submitting samples for analysis.
Check the analysis page for a current estimated wait time to begin sample measurements.
Typical precision (1σ):
≤ 0.1 ‰ VPDB for δ13C≤ 0.2 ‰ AIR for δ15N
CN-EA-iRMS measurements from UCSC SiL have outstanding external accuracy.
A guide to the results you will receive from CN-EA-iRMS measurements.