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. 2016 Jul 14;6:29989. doi: 10.1038/srep29989

Table 1. Cd concentrations in environmental media and foods.

Media Cd concentration Unit Guidelines (Chinese)
Tap water 0.1 μg/L 5 (GB 5749-2006)23
Well water 0.1 μg/L 10 (GB/T 14848-93, Category III)24
Indoor air 0.0015 μg/m3 0.005 (GB 3095-2012, Reference)25
Outdoor air 0.002 μg/m3 0.005 (GB 3095-2012, Reference)25
Soil 4.28 mg/kg 0.40 (GB 15618-2008, Class 2, agriculture soil)52
Home-grown
 Vegetables 0.55 mg/kg 0.05 (GB 2762-2012)26
 Rice 0.89 mg/kg 0.2 (GB 2762-2012)26
Market-bought
 Vegetables 0.02 mg/kg 0.05 (GB 2762-2012)26
 Rice 0.02 mg/kg 0.2 (GB 2762-2012)26
 Pork <0.01 mg/kg 0.1 (GB 2762-2012)26
 Eggs <0.01 mg/kg 0.05 (GB 2762-2012)26
 Cigarettes 3.56 mg/kg