Table 1.

Heavy-metal concentrations in hemp. Listed tissues represent those with the highest concentration of metal as reported from each of the studies.

Metal	Tissue	Concentration (mg kg−1)	Reference
Cr	root	6.2–100	[36,38,59,60]
Zn	flower	78.6	[35]
	root	5029.8	[39]
	shoot	43.9	[59]
Cu	flower	10.2	[35]
	root	1530	[52]
	shoot	29	[59]
Se	shoot	1300	[40]
Cd	flower	1.22	[35]
	leaf	0.38–23.2	[37,52,53]
	root	1362	[36]
Ni	leaf	1.5–123	[37,52,53]
	root	13.6–321.8	[36,59]