Table 4. Heavy metal content of 4 kinds of Artemisia fukudo Makino (unit: dry basis)

Growth environment1)	Pb (mg/kg)	Cd (mg/kg)	As (mg/kg)	Hg (μg/kg)
NYL	0.49±0.02a2)(0.07±0.00a)*	0.52±0.03a(0.07±0.00a)	0.14±0.00b(0.02±0.00b)	5.27±0.81a(0.71±0.11a)
NML	0.23±0.05b(0.03±0.01b)	0.22±0.03c(0.03±0.00c)	0.19±0.03a(0.03±0.00a)	2.03±0.80b(0.27±0.11b)
CYL	0.05±0.01c(0.01±0.00c)	0.36±0.02b(0.05±0.00b)	0.13±0.01bc(0.02±0.00bc)	1.33±0.15b(0.18±0.02b)
CML	0.09±0.00c(0.01±0.00c)	0.22±0.01c(0.03±0.00c)	0.09±0.00c(0.01±0.00c)	0.97±0.06b(0.13±0.01b)

NYL, native young leaves; NML, native mature leaves; CYL, cultivated young leaves; CML, cultivated mature leaves.
All values are mean±SD (n=3). Different superscript letters (^a-d) in the same column indicate significant differences (p〈0.05) by Tukey-B test.
^*( ), wet basis.