Environmental Systems Research

Table 8 Contamination factor (CF) and pollution load index (PLI) for trace elements in sediments

From: Distribution and ecological risk assessment of trace metals in surface sediments from Akaki River catchment and Aba Samuel reservoir, Central Ethiopia

Sites	Contamination factor (CF)								PLI
Sites	Cd	Cr	Cu	Fe	Pb	Mn	Ni	Zn	PLI
Dry season
S1	8.33	0.24	0.13	0.01	7.28	0.50	0.27	0.19	0.39
S2	8.67	0.32	0.08	0.02	6.71	1.30	0.39	0.20	0.48
S3	8.67	0.26	0.07	0.01	6.67	0.68	0.30	0.31	0.40
S4	9.67	0.18	0.04	0.01	6.22	0.44	0.23	0.07	0.27
S5	9.00	0.30	0.34	0.01	8.54	0.79	0.38	0.63	0.59
S6	7.00	0.49	0.05	0.01	12.82	1.55	0.53	0.05	0.41
S7	8.67	0.29	0.13	0.01	7.64	0.55	0.32	0.14	0.40
S8	8.67	0.31	0.12	0.01	6.43	0.70	0.34	0.04	0.34
S9	9.00	0.23	0.06	0.01	6.46	0.39	0.30	0.06	0.29
S10	8.33	0.35	0.09	0.02	7.27	1.25	0.37	0.13	0.47
S11	9.33	0.36	0.16	0.01	8.56	0.61	0.39	1.16	0.58
Rainy season
S1	8.67	0.20	0.05	0.01	5.58	0.61	0.21	0.11	0.30
S2	9.33	0.33	0.05	0.02	5.72	1.80	0.35	0.21	0.47
S3	9.33	0.24	0.07	0.01	6.13	0.55	0.30	0.23	0.37
S4	10.33	0.32	0.10	0.03	5.07	2.16	0.34	0.27	0.56
S5	8.67	0.25	0.12	0.01	6.29	0.45	0.29	0.21	0.38
S6	8.33	0.25	0.14	0.01	6.69	0.50	0.29	0.33	0.42
S7	9.67	0.26	0.05	0.01	6.63	0.46	0.31	0.05	0.30
S8	8.67	0.29	0.06	0.01	6.37	0.64	0.31	0.40	0.41
S9	9.00	0.25	0.06	0.01	6.65	0.46	0.29	0.18	0.35
S10	9.00	0.26	0.08	0.01	6.64	0.51	0.32	0.19	0.37
S11	8.33	0.32	0.05	0.01	6.55	0.64	0.30	0.15	0.34

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