Improvements in Drill-Core Headspace Gas Analysis for Samples from Microbially Active Depths

Table 2

Information on IsoJar™ samples and analytical results of headspace gases for Section 3.1.2.

Sample no.	Amount of core sample (g)	Amount of water (g)	Type of additive	Amount of additive (ml)	Concentration of additives (wt%)	Storage period (days)	CO2 (%)	O2 (%)	N2 (%)	CH4 (%)	δ ^13CCH4(‰ VPDB)	δ ^13CCO2(‰ VPDB)
IJ29	311	310	None	0	0	27	12.8	1.0	86	0.039	−48.3	+14.2
IJ30	299	282	None	0	0	27	13.7	1.0	85	0.029	−74.6	+15.2
IJ31	284	324	BKC	1	0.03	27	12.5	1.0	86	0.036	−74.2	+14.0
IJ32	323	297	BKC	1	0.03	27	12.4	1.0	87	0.040	−84.1	+13.8
IJ33	332	312	BKC	3	0.10	27	11.6	4.2	84	0.053	−88.5	+13.9
IJ34	352	279	BKC	3	0.11	28	13.1	2.0	85	0.046	−75.7	+13.0
IJ35	368	290	BKC	6	0.20	28	10.2	4.1	86	0.067	−58.1	+12.9
IJ36	382	278	BKC	6	0.21	28	10.2	2.9	87	0.067	−90.4	+12.5
IJ37	309	299	BKC	10	0.32	28	12.8	7.3	80	0.054	−56.2	+14.8
IJ38	310	280	BKC	10	0.34	28	12.8	6.6	80	0.052	−57.9	+14.6
IJ39	340	285	BKC	20	0.66	29	10.9	6.2	83	0.068	−54.5	+13.6
IJ40	336	309	BKC	20	0.61	29	9.0	3.7	87	0.105	−57.9	+13.4
IJ41	272	319	HgCl2	1	0.02	29	8.7	10.9	80	0.042	−59.0	+15.0
IJ42	323	296	HgCl2	1	0.02	29	10.2	9.9	80	0.041	−63.1	+14.9
IJ43	348	284	HgCl2	5	0.13	29	10.8	9.2	80	0.037	−65.4	+15.0
IJ44	319	314	HgCl2	5	0.12	29	11.0	9.0	80	0.044	−60.1	+14.8
IJ45	293	322	HgCl2	10	0.22	30	12.7	8.4	79	0.043	−62.6	+15.2
IJ46	362	293	HgCl2	10	0.24	30	13.3	6.9	80	0.046	−61.9	+15.3
IJ47	285	308	HgCl2	20	0.45	30	21	7.0	72	0.033	−62.2	+16.6
IJ48	362	295	HgCl2	20	0.47	30	23	6.0	71	0.045	−62.1	+16.1