Harmful Chemicals in Soil and Risk Assessment of an Abandoned Open Dumpsite in Eastern China
Table 4
Pollution status of inorganic pollutants and heavy metals at the open dumpsite.
Sample code
Concentration of inorganic pollutants and heavy metals/mg⋅kg−1
Points
Depth (m)
Total fluoride
Total cyanide
As
Cr
Cu
Pb
Ni
Zn
Hg
S1
2.0
266
ND
15.2
44.4
12.9
12.8
20.3
48.2
ND
5.0
539
ND
20.5
71.4
31.5
19.4
41.2
86.0
ND
8.0
262
ND
13.2
44.5
10.6
11.5
18.3
39.3
ND
9.6
479
ND
15.9
66.8
28.4
19.1
34.7
79.3
0.05
S2
2.0
297
ND
14.3
42.6
12.5
10.5
20.0
41.9
ND
5.0
560
ND
24.2
76.2
31.7
19.7
42.2
87.0
ND
8.0
305
ND
12.5
46.0
12.2
12.5
20.3
41.8
ND
11.0
531
ND
22.2
74.3
31.6
19.4
39.0
85.9
ND
15.0
386
ND
15.7
46.2
14.5
13.6
23.4
50.3
ND
S3
1.0
439
ND
18.8
68.0
21.6
14.7
31.4
66.3
ND
4.0
610
ND
21.0
72.3
27.9
19.1
36.6
79.8
ND
7.0
286
ND
17.9
48.2
11.5
10.8
19.6
42.5
ND
10.6
505
ND
20.3
75.3
33.9
21.4
41.2
91.7
ND
S4
0.5
256
1.1
12.1
115.0
45.7
41.5
28.9
399.0
0.12
1.9
284
ND
17.9
43.6
11.8
11.1
20.6
43.4
ND
S5
1.0
238
ND
14.9
116.0
53.0
44.0
37.2
130.0
0.43
2.0
537
ND
23.8
73.0
30.5
18.1
40.1
84.2
0.05
Average
398.82
17.67
66.11
24.81
18.78
30.29
88.04
Environmental background values of Shandong
499
NA
8.7
65.2
21.7
24.3
23
61.9
0.016
Soil environmental criteria
Chinaa
NA
NA
30
200
100
300
50
250
0.5
Beijingb, China
650
300
20
250
600
400
50
3500
10
USEPAc
3100
1600
0.39
NA
3100
400
3700
23000
10
USEPAd
NA
NA
18
NA
70
120
38
160
NA
Secondary standard of environmental quality standard for soils (China, 6.5 < pH < 7.5); bscreening values for environmental risk assessment of sites under residential land use pattern (Beijing, China); cRSLs under residential land use pattern (USEPA); dEco-SSLs (higher plants as protected objects). ND: some pollutants are not detected. NA: some pollutants are nonexistent in one standard.
