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Table 2 Physicochemical characteristics of soils irrigated with wastewater in urban vegetable farming sites

From: Heavy metal accumulation and health risk assessment in wastewater-irrigated urban vegetable farming sites of Addis Ababa, Ethiopia

Total concentration (mg kg−1) pH (H2O) OM(%) CEC(cmol(+)kg−1) Particle size
Site Cd Co Cr Cu Ni Pb Zn Sand Silt Clay
Sora Amba 0.95(0.17) 28.6(2.14) 94.0(14.5) 24.2(1.57) 31.5(2.62) 22.1(1.87) 119(14.2) 6.51 4.6 42.9 11.8 28 60.2
Lekunda 2.72(0.20) 43.7(2.37) 140(10.3) 30.7(4.91) 60.3(4.10) 36.7(4.40) 150(12.1) 6.59 4.14 39.7 17.2 34.3 48.5
Peacock-Urael 2.58(0.21) 38.8(2.43) 67.4(3.42) 27.4(2.89) 46.2(2.50) 27.8(2.87) 157(6.41) 6.8 3.3 34.9 15 50.2 34.8
Peacock-Bole 1.55(0.10) 37.1(1.83) 55.9(6.52) 28.5(2.35) 46.0(3.99) 25.8(3.60) 120(9.69) 7.16 2.92 39.6 23.8 27 49.2
Kera 2.95(0.42) 58.6(3.74) 76.3(6.74) 49.9(6.20) 61.7(9.15) 81.1(10.9) 160(8.35) 6.11 3.22 43.9 16.7 43.3 40
Mekanissa 2.27(0.31) 38.6(3.58) 61.6(7.32) 43.3(4.41) 48.7(4.75) 29.6(3.59) 145(26.4) 6.57 3.79 39.5 25 31.2 43.8
Lafto 3.61(0.38) 44.9(3.15) 78.0(10.4) 51.6(8.26) 49.1(6.21) 107(10.7) 203(19.5) 5.99 3.62 44.7 16.8 42.5 40.7
Hana-Mariam 1.37(0.20) 28.8(3.27) 56.3(2.52) 38.3(4.92) 39.9(4.85) 33.1(1.88) 130(16.6) 6.63 3.06 40.3 23.2 25 51.8
Akaki08 1.99(0.24) 40.5(3.75) 66.2(5.26) 32.3(4.53) 43.8(5.97) 42.1(1.67) 156(10.2) 7.1 2.88 54.5 15.5 27.3 57.2
Akaki 1.19(0.27) 43.4(2.38) 69.1(8.51) 27.9(1.59) 46.6(3.27) 35.9(5.22) 154(28.1) 6.93 2.6 49.1 17.7 28.5 53.8
RML a(mg kg−1) 3 50 100 100 50 100 300  
  1. Figures in parentheses represent standard deviation
  2. aSource: Ewers 1991