IsoLab

Below is an informal survey conducted through IsoGeoChem to obtain reasonable estimates of δ¹⁵N and δ¹³C values for the NIST1547 Peach Leaves material. The specific inquiry to IsoGeoChem can be found here. Information about this material beyond this page can be obtained from the NIST domain. A direct link to the formal certificate from the NIST page for this material is here as a pdf. If you would like to add yourself to this anonymous survey, please submit your information to me. The mean and standard deviation for δ¹⁵N and δ¹³C for the survey are emphasized in the first row of the table below. Please note, some submissions are individual samples, some are previously conducted surveys and represent a compilation. The summary values below are in no way accepted by the community but simply represent values obtained during routine analysis.

Anonymous Lab Number	Average δ¹⁵N vs AirN₂ (‰)	Standard Deviation δ¹⁵N (‰)	Sample Size δ¹⁵N	Average δ¹³C vs VPDB (‰)	Standard Deviation δ¹³C (‰)	Sample Size δ¹³C
Survey	1.98	0.21		-25.99	0.18
1	2.00	0.10	10	-26.03	0.21	50
2	1.80	0.06	3	-25.90	0.02	3
3	1.89	0.15		-25.89	0.13
4	1.80	0.16	5	-26.00	0.19	5
5	2.00	0.09	7
6	2.40	0.22	12	-25.90	0.05	12
7	1.92	0.07	3	-26.19	0.01	3
8	2.25	0.23		-25.88	0.06
9	1.72	0.08		-25.79	0.14
10	1.92	0.14	407	-25.93	0.07	475
11	1.90			-25.80
12	1.98	0.27	10	-26.03	0.16	10
13	1.80			-26.50
14	2.20	0.08	5
15	1.90	0.23	12	-25.90	0.05	12
16	2.10	0.04	3	-26.30		2
17	1.90	0.02	5	-25.90	0.03	5
18	2.50	0.12	4	-26.00	0.26	4
19	1.80	0.20	10
20	1.87	0.13		-25.97	0.12