Status of the AMS graphitization system in the dendrochronological laboratory at AGH-UST, Kraków

Damian Wiktorowski; Marek Krąpiec; Andrzej Rakowski; Alexander Cherkinsky

doi:10.2478/geochr-2020-0024

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Status of the AMS graphitization system in the dendrochronological laboratory at AGH-UST, Kraków

Geochronometria

Volume 47 (2020): Issue 1 (January 2020)

By: Damian Wiktorowski, Marek Krąpiec, Andrzej Rakowski and Alexander Cherkinsky

Open Access

|Dec 2020

Figures & Tables

AMS graphitization system in the Dendrochronological Laboratory at AGH-UST, Kraków: a) Reduction line and vacuum line for sample sealing and purification of CO₂; b) cryogenically separation CO₂ from water in glass vessel cooled in a dry ice/ethanol slurry and trapping CO₂ in the glass valve cooled by liquid nitrogen; c) shows the vacuum line for graphite preparation.

Changes in CO₂ pressure during reduction for some of the reduced samples.

Table 1

The results of ¹⁴C AMS measurements of the samples prepared using the graphitization line in the Dendrochronological Laboratory at AGH-UST Krakow.

N	Lab code	Sample ID	Material	pMC	±	¹⁴C age years	±	Weight C [mg]
1	UGAMS 40065	C14_10	OXII	133.82	0.33			1
2	UGAMS 34241	C14_5	OXII	134.69	0.28			1
3	UGAMS 34242	C14_5A	OXII	133.43	0.28			1
4	UGAMS 41465	C14_11	OXII	135.11	0.30			1
5	UGAMS 41466	C14-12	OXII	133.07	0.30			1
6	UGAMS 41699	C14_13	OXII	134.78	0.41			1
7	UGAMS 41702	C14_15	OXII	133.31	0.41			1
8	UGAMS 41700	C14-13B	OXII	134.68	0.33			0.3
9	UGAMS 41701	C14-14	OXII	133.45	0.33			0.36
10	UGAMS 42224	C14_11A	OXII	135.20	0.26			1
11	UGAMS 42225	C14_12A	OXII	132.83	0.36			1
12	UGAMS 35610	C14_7	OXII	134.02	0.31			1
13	UGAMS 35611	C14_7A	OXII	134.11	0.32			1
14	UGAMS 36945	C14_7B	OXII	135.21	0.31			1
15	UGAMS 36946	C14-9	OXII	132.89	0.31			1
16	UGAMS 37297	C14_9A	OXII	134.48	0.31			1
17	UGAMS 37298	C14_9B	OXII	133.64	0.31			1
18	UGAMS 43566	C14_16	OXII	133.99	0.34			1
19	UGAMS 43567	C14_16A	OXII	134.48	0.43			0.34
20	UGAMS 43568	C14_16B	OXII	132.88	0.39			0.1
21	UGAMS 40066	WIT_10	vitrinite	0.391	0.011	42096	147	1
22	UGAMS 40067	WIT_10A	vitrinite	0.385	0.011	42200	155	0.65
23	UGAMS 34243	WIT_3D	vitrinite	0.546	0.013	41854	195	1
24	UGAMS 34244	WIT_5	vitrinite	0.576	0.014	41427	198	1
25	UGAMS 41467	WIT_11	vitrinite	0.549	0.013	41811	194	1
26	UGAMS 41468	WIT_12	vitrinite	0.765	0.047	39141	512	1
27	UGAMS 41695	WIT_11A	vitrinite	0.568	0.012	41532	203	1
28	UGAMS 41696	WIT_12A	vitrinite	0.684	0.016	40043	184	1
29	UGAMS 41697	WIT_13B	vitrinite	0.942	0.021	37471	177	0.32
30	UGAMS 41698	WIT_13C	vitrinite	0.951	0.020	37400	166	0.35
31	UGAMS 42222	WIT_13	vitrinite	1.020	0.016	36834	124	1
32	UGAMS 42223	WIT_14	vitrinite	0.672	0.014	40187	166	1
33	UGAMS 35612	WIT_6	vitrinite	1.961	0.025	30010	83	1
34	UGAMS 35613	WIT_7	vitrinite	0.432	0.010	43770	179	1
35	UGAMS 36947	WIT_7A	vitrinite	0.696	0.024	39899	280	1
36	UGAMS 36948	WIT_9	vitrinite	0.658	0.021	40316	256	1
37	UGAMS 37299	WIT_7B	vitrinite	1.410	0.060	34233	165	1
38	UGAMS 37300	WIT_9A	vitrinite	1.385	0.081	34377	225	1
39	UGAMS 43569	WIT15	vitrinite	0.388	0.010	44601	207	1
40	UGAMS 43570	WIT15A	vitrinite	0.482	0.013	42862	214	0.34
41	UGAMS 43571	WIT15B	vitrinite	0.943	0.038	37461	325	0.1
42	UGAMS 31703	C5_1	IAEA C5	23.32	0.11	11696	36	1
43	UGAMS 42226	C5_2	IAEA C5	23.47	0.85	11644	29	1
44	UGAMS 36949	C5_1B	IAEA C5	23.16	0.09	11750	30	1
45	UGAMS 34245	C6_1B	IAEA C6	149.44	0.44			1
46	UGAMS 35614	C7_1	IAEA C7	50.55	0.15	5479	23	1
47	UGAMS 35615	C7_2	IAEA C7	50.99	0.14	5410	21	1
48	UGAMS 41489	C7_2A	IAEA C7	50.26	0.16	5526	25	1
49	UGAMS 37301	C7_1A	IAEA C7	49.72	0.15	5616	27	1

Table 2

Relationship between measured and expected values.

Material	n	Consensus value ¹⁴C (pMC)	Average measured value ¹⁴C (pMC)
NIST OxII	20	134.07±0.17	134.05±0.17
Background (vitrinite)	21	0	0.781±0.023
IAEA C5	3	23.05±0.02	23.31±0.35
IAEA C6	1	150.61±0.11	149.44±0.44
IAEA C7	4	49.53±0.12	50.38±0.15

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DOI: https://doi.org/10.2478/geochr-2020-0024 | Journal eISSN: 1897-1695 | Journal ISSN: 1733-8387

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Language: English

Page range: 112 - 117

Submitted on: Jan 15, 2020

Accepted on: May 29, 2020

Published on: Dec 31, 2020

Published by: Sciendo

In partnership with: Paradigm Publishing Services

Keywords:

AMS,

graphitization system,

radiocarbon measurements,

sample preparation

Related subjects:

Geosciences,

Geosciences, other

© 2020 Damian Wiktorowski, Marek Krąpiec, Andrzej Rakowski, Alexander Cherkinsky, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Volume 47 (2020): Issue 1 (January 2020)

Status of the AMS graphitization system in the dendrochronological laboratory at AGH-UST, Kraków

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Table 1

Table 2

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