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Table 4 Transfer factor of metals into crops

From: Bioaccumulation of heavy metals in soil and selected food crops cultivated in Kogi State, north central Nigeria

Food crops Cu Zn Pb Cd Ni Co
Maize (n = 10) 0.71 1.96 0.03 1.68 0.77 2.48
Passion fruit (n = 10) 0.77 0.51 0.01 0.21 1.44 0.69
Pumpkin (n = 10) 0.38 0.57 0.01 0.88 0.11 0.07
Cassava (n = 20) 1.01 0.54 0.03 1.10 2.21 1.06