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Table 4 Enrichment factor and geo-accumulation index of Little Akaki River sediment

From: Little Akaki River sediment enrichment with heavy metals, pollution load and potential ecological risks in downstream, Central Ethiopia

Sample Site code Enrichment Factor (EF) Geo-accumulation (Igeo)
Zn Cr Cd Pb Zn Cr Cd Pb
S1 1.17 0.03 18.84 3.93 − 0.8 − 5.94 3.21 0.93
S2 1.42 0.31 12.36 1.88 0.07 − 2.14 3.2 0.46
S3 2.05 5.70 11.84 1.82 0.23 1.71 2.75 0.04
S4 1.68 0.63 9.76 30.14 0.16 − 1.26 2.69 4.31
S5 1.83 0.80 7.13 3.15 0.26 − 1.37 2.21 1.03
S6 1.40 0.78 12.49 27.05 − 0.62 − 1.47 2.53 3.63
S7 1.16 0.57 11.39 2.20 − 0.86 − 1.88 2.44 0.06
S8 3.03 2.45 17.08 2.96 0.68 0.37 3.17 0.62
S9 7.09 0.19 28.77 6.27 0.72 − 4.51 2.74 0.53
S10 3.12 6.84 24.74 4.58 − 0.35 0.87 2.72 0.28
Mean 2.40 1.83 15.44 8.40 − 0.05 − 1.56 2.77 1.19