Environmental and Ecological Risk Assessment of Trace Metal Contamination in Mangrove Ecosystems: A Case from Zhangjiangkou Mangrove National Nature Reserve, China

Table 4

Contaminant factor (CF) and pollution load index (PLI) values of trace metals in sediments from Zhangjiang River Estuary mangrove zone.

Station	CF (Cu)	CF (Cd)	CF (Pb)	CF (Cr)	CF (Zn)	CF (As)	CF (Hg)	PLI
C01	0.78	0.45	2.31	0.39	1.06	3.33	0.25	0.83
C02	0.71	0.40	2.65	—	1.24	3.04	0.25	0.94
C03	0.67	0.45	3.00	0.60	1.23	3.09	0.38	0.96
C04	0.72	0.25	2.66	0.63	1.15	3.15	0.13	0.75
C05	0.71	0.20	3.14	0.74	1.18	3.20	0.50	0.94
C06	0.62	0.25	2.30	0.31	0.95	2.91	0.00	0.38
C07	0.68	0.30	2.29	0.46	1.06	3.01	0.25	0.78
C08	0.70	0.25	2.58	0.55	1.10	3.57	0.25	0.82
C09	0.67	0.25	2.47	0.48	1.14	2.81	0.13	0.70
C10	0.77	0.30	3.01	0.39	1.11	2.94	0.13	0.73
C11	0.75	0.20	2.48	0.38	1.07	3.22	0.00	0.72
C12	0.77	0.25	2.62	0.33	1.02	2.90	0.25	0.74
C13	0.54	0.20	2.91	0.32	1.11	3.44	0.00	0.85
C14	0.71	0.25	2.42	0.44	1.00	3.11	0.38	0.80
C15	0.66	0.90	2.58	0.36	1.06	3.29	1.00	1.10
C16	0.66	0.30	2.65	0.37	1.19	2.91	0.13	0.70
C17	0.84	0.20	2.53	0.49	1.18	3.31	0.13	0.72
DS01	0.68	0.45	2.89	0.39	1.15	3.40	0.25	0.86
DS02	0.83	0.55	3.74	0.20	1.11	3.31	0.88	1.02
DS03	0.62	0.30	3.46	0.28	0.94	3.71	0.25	0.77
DS04	0.34	0.55	2.55	0.42	1.08	1.98	0.13	0.66
DS05	0.52	0.40	2.30	0.23	0.98	2.50	0.13	0.62
DS06	0.57	0.15	2.55	0.26	0.98	2.85	0.50	0.70
DS07	0.67	0.95	2.75	0.14	1.10	4.00	0.13	0.75
DS08	0.58	0.15	3.51	0.37	1.05	3.09	0.63	0.81
DS09	0.62	0.35	2.84	0.18	0.96	3.64	0.25	0.72
DS10	0.56	0.20	2.54	0.18	1.11	3.26	0.25	0.65
DS11	0.62	0.20	3.03	0.18	1.05	3.52	0.38	0.72
DS12	0.67	0.30	3.03	0.46	1.06	3.56	0.13	0.75