. 2020 Apr 22;5(17):9724–9732. doi: 10.1021/acsomega.9b04007

Table 1. Regulatory Limits (mg kg^–1) for Metals in Tea or Herbal Materials from Different Countries.

countries	Cr	Ni	Cd	Pb	Cu	Zn	references
Australia						150	(24)
Canada	2		0.3	10			(25)
China	5		1	5	60		(26)
Germany			0.2		40		(27)
India		5		10	150		(9)
Iran				1	150		(26)

Table 1. Regulatory Limits (mg kg–1) for Metals in Tea or Herbal Materials from Different Countries.