Applied Biological Chemistry

Table 4 The numbers of soil samples which exceeded the Korean natural background of heavy metal(loid)s

From: Distribution and extent of heavy metal(loid) contamination in agricultural soils as affected by industrial activity

Distance	As	Cd	Cu	Ni	Pb	Zn	Hg
0–500 m
Topsoil	16	16	36	1	6	8	4
Subsoil	18	12	38	2	5	9	4
Total	34	28	74	3	11	17	8
500–1000 m
Topsoil	14	7	35	3	0	6	6
Subsoil	13	12	32	2	1	5	3
Total	27	19	67	5	1	11	9
> 1000 m
Topsoil	4	3	5	0	0	0	0
Subsoil	5	4	6	0	0	0	0
Total	9	7	11	0	0	0	0

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