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Table 3 Comparison of element concentrations (mg/kg) in vegetables reported in the literature

From: Health risk assessment of potentially toxic elements via consumption of vegetables irrigated with polluted river water in Addis Ababa, Ethiopia

Location Vegetables Cr Mn Fe Cu Zn As Cd Co Ni References
Beijing, China Cabbage 0.01 0.25 2.42 0.01 0.005 0.058 Song (2009)
Potato 0.03 1.03 3.77 0.01 0.015 0.054
Accra, Ghana Cabbage BDL 3.69 37.19 3.33 9.55 BDL 0.44 1.77 Lente et al. (2014)
Lettuce BDL 63.96 108.07 6.26 10.61 0.01 1.07 2.78
Sao Paulo, Brazil S. Chard 0.07 0.05 0.17 0.21 Fernando et al. (2012)
Lettuce 0.09 0.07 0.16 0.13
Cabbage 0.39 0.12 0.51 0.54
Carrot 0.09 0.03 0.15 0.11
Potato 0.04 0.14 0.62 0.18
Lahore, Pakistan Potato 1.60 17.77 4.16 21.77 0.21 53.18 6.04 Adeel and Riffat (2014)
Cabbage 3.06 17.26 4.92 37.76 0.27 47.2 5.05
Carrot 1.92 17.45 5.34 19.39 0.29 51.2 5.33
Swat, Pakistan Potato 0.11 0.11 0.06 0.07 0.09 0.06 Kifayetullah et al. (2014)
Quetta, Pakistan Lettuce 26.11 384.41 8.00 76.46 5.63 3.08 Abdul et al. (2011)
Nagodi, Ghana Cabbage 3.98 4.80 0.07 1.52 BDL Boamponsem et al. (2012)
Lettuce 1.31 1.12 0.16 1.78 BDL
Carrot 0.07 BDL 0.15 BD 0.08
Kera and Peacock, Ethiopia Cabbage 1.25 27.00 123.00 3.17 31.81 6.56 0.02 0.10 0.86 Itanna (1998)
Lettuce 4.13 26.00 497.00 0.19 0.82 0.14 0.03 0.30 0.58
S. Chard 1.55 52.25 494.00 7.97 52.10 10.67 0.06 0.50 1.50
Kera, Gofa and Akaki farm, Ethiopia S. Chard 0.84 64.09 4.90 22.37 0.32 0.82 0.88 Weldegebriel et al. (2012)
Eth. Kale 0.90 19.41 6.00 23.45 1.02 1.46 2.46
Lettuce 0.67 8.23 3.41 11.69 0.46 0.42 0.63
Cabbage 0.06 3.82 0.99 3.07 0.18 0.05 0.38
Addis Ababa, Ethiopia S. Chard 1.96 147.07 362.5 11.59 57.77 0.12 0.10 0.34 1.47 This study mean values
Carrot 2.23 14.05 214.50 7.33 23.03 0.05 0.05 0.15 1.00
Potato 1.43 5.40 101.75 5.24 14.63 0.03 0.04 0.13 0.55
Eth. Kale 1.60 28.19 177.80 4.80 37.35 0.07 0.08 0.06 0.63
Lettuce 2.57 42.53 484.50 11.25 49.26 0.10 0.10 0.29 1.82
Cabbage 1.66 29.31 357.50 3.26 24.20 0.08 0.04 0.21 1.26
  1. –, not available; BDL, below detection limit; S. chard, Swiss chard