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University of California
Stable Isotope Laboratory
Earth and Planetary Sciences
1156 High Street, E&MS C512
Santa Cruz, CA 95064

Lab: (831) 459-5751
Office: (831) 459-5857
Fax: (831) 459-3074


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Elemental Analyzer Run Configuration Tool

Input sample information to assemble EA run datatable.

Average Sample C:N ratio:
Average Sample Weight % Nitrogen or Carbon: %N: %C:
Number of Samples to be Run:
Aveage Mass of Samples to be Run: µg mg
Beginning Autosampler Port:


Row Mass (µg) Type Port Sample Purpose

Sample Type/Mass Guide

Amount of dried
material to be weighed
per sample (mg)
%N
of sample
Amount of N needed
per sample for
isotope analysis (µg)
Possible sample
types
60.000 0.1% 60 soil
12.000 0.5% 60 soil
4.000 to 6.000 1.5% 60 decaying plant litter
3.000 to 4.000 3.0% 60 fresh leaves, algae
2.000 to 3.000 5.0% 60 legumes
0.600 to 1.200 10.0% 60 all animals
0.300 20.0% 60 ammonium salts
0.151 40.0% 60 urea
42-502-360Plant - leaves
36-40% 0.8-1.3% 60 Plant - roots
46-48% 0.4-0.8% 60 Plant - stems
40-44% 0.02-0.06% 60 Plant - wood
43-47% 1.5-3.5% 60 Plant - grain flour (wheat, rye, rice)
45-47% 2.5-5% 60 Plant - grass, alfalfa
0.8-1.2% 0.1-0.15% 60 Soil - low OM
2.5-3.5% 0.2-0.3% 60 Soil - medium OM
10-14% 0.3-1.0% 60 Soil - high OM
0.5-1.5% 0.05-0.15% 60 Sediment - bulk
40% 10.0% 60 Animal, Fish, Invertebrate tissue