Table 1.

Concentrations of Pb and Cd in water and soil of different sampling areas.

Location	Sample	Concentrations of		Location	Sample	Concentrations of
	type	heavy metals a			type	heavy metals a
		Pb	Cd			Pb	Cd
A	Water	0.012	0.016	I	Water	ND	ND
	Soil	48.620	3.450		Soil	13.50	0.176
B	Water	0.014	0.043	J	Water	0.001	ND
	Soil	39.140	7.860		Soil	19.30	0.158
C	Water	0.001	ND	K	Water	0.016	ND
	Soil	25.480	5.180		Soil	62.50	0.682
D	Water	0.002	0.005	L	Water	0.013	ND
	Soil	37.250	0.180		Soil	88.60	7.200
E	Water	0.012	0.026	M	Water	0.001	ND
	Soil	28.230	2.840		Soil	15.200	0.154
F	Water	0.001	ND	N	Water	0.001	ND
	Soil	24.580	0.470		Soil	13.900	0.065
G	Water	ND	ND	O	Water	0.002	ND
	Soil	25.200	0.074		Soil	11.800	0.057
H	Water	0.022	ND
	Soil	75.600	0.043

^aThe unit of heavy metal concentration is mg L⁻¹ in water and mg kg⁻¹ in soil; ND, not detected.