Table 2 Heavy metal limits in fertilizer, animal feed and human food (mg/kg). ‘—’ means the standard of relevant heavy metal concentration have not been stipulated. aSource: Standard for microbial organic fertilizers, NY 884–2012, China, 2012. bSource: Compost quality standards, Brinton W, 2000. cSource: EU standards for arsenic, cadmium, lead, nitrites, volatile mustard oil and harmful botanical impurities, No 1275/2013, EU, 2013. dSource: Standard for feeds, GB 13078–2001, 2001 and standard for copper as well as selenium (GB 26418–2010) in feeds, 2011. eSource: Standard for feeds, Canadian Food Inspection Agency, 2015. fSource: Standard for foodstuffs (No 1881/2006 and No 629/2008), EU. gSource: Standard for contaminants and toxins in the GSCTFF, FAO/WHO, 2011. hSource: Standard for contaminants in foodstuffs (GB 2762–2012), 2012. iHeavy metal limit in meat/liver.
From: Tracing heavy metals in ‘swine manure - maggot - chicken’ production chain
Heavy metal limits | Zn | Cu | Cr | Ni | As | Se | Pb | Cd |
|---|---|---|---|---|---|---|---|---|
In fertilizer | ||||||||
Chinaa | — | — | 150 | — | 15 | — | 50 | 3 |
Canadab | 500 | 100 | 210 | 62 | 13 | 2 | 150 | 3 |
In animal feed | ||||||||
European Union (EU)c | — | — | — | — | 2 | — | 5 | 0.5 |
Chinad | — | 35 | 10 | — | 2 | 0.5 | 5 | 0.5 |
Canadae | — | — | — | — | 8 | — | 8 | 0.4 |
In human food | ||||||||
European Unionf | — | — | — | — | — | — | 0.1/0.5i | 0.05/0.5 |
WHO/FAOg | — | — | — | — | — | — | 0.1/0.5 | — |
Chinah | — | — | 1 | — | 0.5 | — | 0.2/0.5 | 0.1/0.5 |
