Metal Source Concentration(mg/l) Reference
Cadmium Nigeria ND–0.01 [22]
  Italy ND –0.00058 [5]
  Brazil ND –0.0143 [23]
  Ethiopia ND –0.007 Present study
Copper Nigeria 0.04–0.10 [22]
  Brazil 0.038–0.155 [24]
  Norway 0.007–0.049 [25]
  Ethiopia 0.012–0.056 Present study
Lead Nigeria ND – 0.047 [22]
  Italy ND –0.0133 [5]
  Brazil 0.013–0.0329 [24]
  Ethiopia ND –0.03 Present study
Manganese Poland 0.12–0.24 [26]
  Brazil 0.11–0.348 [24]
  Norway 0.032–0.142 [25]
  Ethiopia 0.042–0.202 Present study
Zinc Nigeria 0.010– 0.15 [22]
  Poland 0.019–0.037 [26]
  Brazil 0.0527–0.226 [24]
  Ethiopia 0.599–3. 528 Present study
Table 2: Comparison of levels of metals in beer samples (mg/l) reported from different countries.
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