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Table 3 Heavy metal concentration (mg/kg dry weight) in vegetables grown in and around Hazaribag tannery industrial region, Dhaka, Bangladesh

From: Contamination status and health risk assessment of trace elements in foodstuffs collected from the Buriganga River embankments, Dhaka, Bangladesh

Elements Stem Amaranth (n = 13) Radish (n = 10) Spinach (n = 8) Safe limita WAV*
Cu 8.12 (4.40-14.38) 4.02 (3.58-4.32) 5.64 (3.58-6.72) 73 5-30
Co 1.44 (0.45-3.16) 0.53 (0.36-0.65) 1.36 (0.96-1.66) 50 0.02-1
Fe 1375 (192–3489) 305 (180–381) 1186 (904–1345) 425 -
Zn 24.34 (0–44.53) 13.57 (7.43-23.21) 78.34 (44.66-98.53) 100 27-150
Mn 29.57 (0–80.15) <0.63 (86–299) 211.56 500 30-300
  1. n: number of samples.
  2. asafe limit (joint FAO/WHO food standard programme [2001]).
  3. *WAV = World Average Value (Pendias [2000]).