Composition and Distribution Characteristics and Geochemical Significance of n-Alkanes in Core Sediments in the Northern Part of the South Yellow Sea

Table 2

Geochemical parameters of n-alkanes and isoprenoid alkanes of sediment core samples.

Sample number	Deep/cm	A	B	C	D	E	F	G	H	I	J	K	L	M	N	O
ZY1	10	13–40	16,31	0.45	28.54	53.68	1.88	0.91	0.82	0.89	0.76	0.58	0.70	0.21	1.01	29.96
ZY2	20	12–40	17,31	0.48	31.24	51.98	1.66	0.91	0.62	0.75	0.83	0.68	0.77	0.21	1.01	29.88
ZY3	30	14–40	16,31	0.58	35.96	50.38	1.40	0.85	0.74	0.94	1.28	0.65	1.21	0.25	1.05	29.92
ZY4	40	12–40	16,31	0.69	38.90	47.75	1.23	0.88	0.80	0.99	1.62	0.67	1.51	0.26	1.07	30.04
ZY5	50	12–40	16,31	0.68	38.07	50.06	1.31	0.92	0.73	0.99	2.02	0.75	1.93	0.31	1.06	29.91
ZY6	60	12–40	18,31	0.63	37.47	49.67	1.33	0.73	0.64	0.82	1.88	0.70	1.78	0.29	1.08	29.99
ZY7	70	13–40	17,29	0.42	29.52	56.95	1.93	0.68	0.70	1.07	1.91	0.82	1.85	0.32	0.87	29.61
ZY8	80	13–40	17,31	0.49	31.46	56.93	1.81	0.79	0.74	1.09	2.40	0.78	2.25	0.37	1.12	30.09
ZY9	90	13–40	17,31	0.83	43.79	45.58	1.04	0.91	0.69	1.02	2.75	0.86	2.61	0.30	1.08	30.05
ZY10	100	12–38	17,31	0.50	30.54	55.39	1.81	0.96	0.62	0.91	2.88	0.96	2.73	0.37	1.06	29.93
ZY11	110	13–37	17,31	0.34	23.97	64.91	2.71	0.94	0.61	0.77	3.64	0.86	3.52	0.47	1.11	29.98
ZY12	120	13–37	18,31	0.43	28.91	59.79	2.07	0.57	0.62	0.99	3.80	0.97	3.67	0.43	1.05	29.87
ZY13	130	12–40	18,31	0.32	22.55	61.95	2.75	0.35	0.45	0.71	2.47	0.75	2.38	0.40	1.04	29.81
ZY14	140	12–37	17,31	0.63	34.34	52.44	1.53	0.88	0.63	0.90	3.58	0.90	3.51	0.38	1.05	29.87
ZY15	150	13–37	17,31	0.69	39.58	48.83	1.23	0.70	0.66	0.87	2.10	0.71	2.02	0.30	1.05	30.01
ZY16	160	13–37	16,31	0.98	47.99	43.25	0.90	0.88	0.65	0.92	3.10	0.73	3.00	0.29	1.00	30.04
ZY17	170	13–37	18,31	0.54	33.86	55.71	1.65	0.75	0.57	0.88	3.17	0.91	3.04	0.39	1.08	30.02
ZY18	180	12–37	17,29	0.46	30.25	58.83	1.94	0.90	0.62	0.78	3.38	0.83	3.29	0.42	0.99	29.81
ZY19	190	13–37	18,31	0.29	22.07	67.35	3.05	0.69	0.67	0.86	4.03	0.94	3.95	0.49	1.05	29.93
ZY20	200	14–37	18,31	0.19	15.90	72.85	4.58	0.44	0.70	0.97	3.79	0.87	3.73	0.52	1.04	29.94
ZY21	210	12–37	18,31	0.41	27.75	61.72	2.22	0.64	0.62	0.96	3.38	0.90	3.27	0.44	1.10	29.95
ZY22	220	12–37	18,29	1.73	62.61	31.33	0.50	0.41	0.45	1.04	3.81	1.09	3.74	0.23	0.98	29.83
ZY23	230	13–36	18,31	0.57	36.03	55.28	1.53	0.59	0.66	1.06	3.83	0.78	3.73	0.40	1.04	29.91
ZY24	240	12–37	18,31	0.37	25.52	61.43	2.41	0.77	0.64	0.83	2.25	0.75	2.16	0.39	1.03	29.93
ZY25	250	12–40	18,29	0.23	17.74	65.90	3.72	0.57	0.55	0.70	1.13	0.57	1.06	0.31	0.99	29.85

A: carbon number range; B: carbon number of main peak; C: ; D: ; E: ; F: ; G: Pr/Ph; H: Pr/nC₁₇; I: Ph/nC₁₈; J: CPI; K: CPI1; L: CPI2; M: Alkterr; N: ; O: ACL;
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