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Table 3 Heavy metal concentrations found in Costarican animal feed samples

From: Inorganic contaminants and composition analysis of commercial feed grade mineral compounds available in Costa Rica

Metal/Feed type Concentration range, μg/kga,b
Bovine Fish Poultry Shrimp Swine Guideline
Arsenic Not detected 19.3 – 25.4 48.5 – 90.4 37.8 – 53.5 7.7 – 30.5 2000
Mercury 60.2 – 186.8 50.0 – 55.9 35.9 – 38.6 39.3 – 41.8 38.5 – 71.4 100
Lead Not detected 125.7 – 127.0 Not detected Not detected 132.9 – 151.7 5000
Cadmium 113.1 – 156.7 39.9 – 40.3 35.3 – 107.9 19.3 – 35.0 59.5 – 61.2 1000/500
  1. aValues obtained from n = 10. bFor all cases SD < 5 %; three replicates per sample