Table 9.

Heavy metals contents in rhizome of P. notoginseng (mean ± SD, mg·kg⁻¹).

Number	Pb	Cd	Cr	As	Hg	Cu
1	2.42 ± 0.12	0.15 ± 0.01	1.98 ± 0.10	1.45 ± 0.07	0.015 ± 0.0008	10.61 ± 0.53
8	0.95 ± 0.04	0.06 ± 0.00	3.32 ± 0.14	0.82 ± 0.04	0.018 ± 0.0008	20.87 ± 0.90
10	2.80 ± 0.01	0.05 ± 0.00	4.51 ± 0.01	0.59 ± 0.00	0.004 ± 0.0001	13.41 ± 0.04
11	1.59 ± 0.07	0.17 ± 0.01	0.62 ± 0.03	1.49 ± 0.07	0.016 ± 0.0007	16.14 ± 0.73
13	1.92 ± 0.10	0.05 ± 0.00	1.27 ± 0.06	0.42 ± 0.02	0.016 ± 0.0008	10.5 ± 0.54
16	0.60 ± 0.03	0.23 ± 0.01	0.40 ± 0.02	1.60 ± 0.07	0.012 ± 0.0005	7.96 ± 0.36
17	0.27 ± 0.01	0.05 ± 0.00	0.22 ± 0.01	0.41 ± 0.02	0.010 ± 0.0005	6.33 ± 0.33
18	0.20 ± 0.01	0.06 ± 0.00	1.94 ± 0.07	0.49 ± 0.02	0.008 ± 0.0003	8.14 ± 0.28
19	3.26 ± 0.14	0.08 ± 0.00	1.42 ± 0.06	0.70 ± 0.03	0.011 ± 0.0005	12.42 ± 0.53
20	1.25 ± 0.06	0.07 ± 0.00	1.72 ± 0.08	0.46 ± 0.02	0.008 ± 0.0004	19.52 ± 0.90
21	1.91 ± 0.13	0.05 ± 0.00	1.50 ± 0.10	0.57 ± 0.04	0.016 ± 0.0011	8.90 ± 0.60
22	2.76 ± 0.09	0.32 ± 0.01	1.76 ± 0.06	1.83 ± 0.06	0.012 ± 0.0004	10.31 ± 0.35
23	2.39 ± 0.09	0.05 ± 0.00	0.63 ± 0.02	1.02 ± 0.04	0.008 ± 0.0003	14.68 ± 0.53
24	0.31 ± 0.01	0.04 ± 0.00	0.85 ± 0.02	0.24 ± 0.01	0.016 ± 0.0004	6.61 ± 0.17
26	0.86 ± 0.02	0.33 ± 0.01	0.28 ± 0.01	0.66 ± 0.02	0.006 ± 0.0002	15.44 ± 0.45
27	0.04 ± 0.00	0.05 ± 0.00	1.63 ± 0.08	0.45 ± 0.02	0.007 ± 0.0003	10.53 ± 0.49
29	0.67 ± 0.03	0.04 ± 0.00	1.28 ± 0.07	0.31 ± 0.02	0.008 ± 0.0004	6.26 ± 0.32
30	2.24 ± 0.10	0.33 ± 0.02	4.11 ± 0.18	1.60 ± 0.07	0.009 ± 0.0004	12.78 ± 0.58
31	2.36 ± 0.08	0.06 ± 0.00	5.41 ± 0.18	1.73 ± 0.06	0.009 ± 0.0003	7.88 ± 0.27
34	1.24 ± 0.04	0.21 ± 0.01	1.75 ± 0.06	0.33 ± 0.01	0.008 ± 0.0003	4.95 ± 0.17
36	2.19 ± 0.04	0.04 ± 0.00	0.40 ± 0.01	0.10 ± 0.00	0.011 ± 0.0002	15.84 ± 0.29
37	1.64 ± 0.06	0.30 ± 0.01	3.76 ± 0.13	0.29 ± 0.01	0.007 ± 0.0002	20.04 ± 0.70