Distributions and Sources of Sedimentary Sterols as well as Their Indications of Sewage Contamination in the Guanting Reservoir, Beijing

Table 3

Sterol concentrations in sediments of the Guanting Reservoir (μg g⁻¹).

Sampling point	Cholesterol	Cholestanol	Coprostanol	Epicoprostanol	Campesterol	Sitosterol	Stigmasterol	Total sterols
G1	2.93	1.00	0.28	0.44	0.09	2.88	2.04	9.66
G2	8.41	1.66	0.35	0.34	0.08	7.88	6.29	25.01
G3	0.80	0.50	0.20	0.19	0.06	0.80	0.48	3.03
G4	0.84	0.48	0.11	0.10	0.06	1.40	0.61	3.60
G5	2.63	0.83	0.57	0.33	0.15	8.03	4.69	17.23
G6	2.20	1.14	0.90	0.85	0.22	28.48	6.52	40.31
G7	1.16	0.63	0.39	0.29	0.17	2.68	2.09	7.41
G8	1.24	0.77	0.51	0.29	0.16	5.03	2.44	10.44
G9	1.35	0.57	0.71	0.41	0.17	3.08	1.06	7.35
G10	1.73	0.53	0.40	0.20	0.10	2.21	1.15	6.32
G11	1.16	0.57	0.18	0.32	0.07	1.41	0.64	4.35
G12	1.84	0.70	0.36	0.38	0.11	2.11	0.89	6.39
G13	3.22	0.71	0.37	0.32	0.11	1.73	1.19	7.65
G14	0.59	0.46	0.23	0.17	0.07	0.79	0.47	2.78
G15	7.32	2.00	1.22	1.49	0.21	1.58	1.32	15.14
G16	2.89	1.04	1.24	0.97	0.14	12.29	9.06	27.63
G17	3.01	1.26	0.55	0.67	0.11	19.50	10.58	35.68
G18	5.71	1.51	0.62	0.58	0.11	4.56	3.35	16.44
G19	2.06	0.65	0.45	0.34	0.09	4.67	2.42	10.68
Mean	2.69	0.90	0.51	0.46	0.12	5.85	3.02	13.53