Table 2.
Pb contents extracted in 1 M HCl, 1 M NH 4 Cl, soil solutions (C soln ), Pb measured using DGT technique (C DGT ) and effective concentration of Pb ( C E ) calculated using DIFS (Mean ± SD, n = 3)
|
Sites |
C
1M HCl
|
C
1M NH4Cl
|
C
soln
|
C
DGT
|
CE |
|---|---|---|---|---|---|
| (mg kg −1 dw) | (mg kg −1 dw) | (μg L −1 ) | (μg L −1 ) | (μg L −1 ) | |
| FE1 |
2250 ± 190 |
59.4 ± 3.62 |
105 ± 9.22 |
63.0 ± 6.60 |
2020 ± 216 |
| FE2 |
940 ± 95.2 |
13.2 ± 0.93 |
188 ± 12.5 |
156 ± 18.8 |
4940 ± 629 |
| FE3 |
660 ± 46.6 |
12.1 ± 1.04 |
49.1 ± 3.09 |
38.1 ± 4.99 |
1240 ± 165 |
| FE4 |
1560 ± 120 |
287 ± 21.1 |
208 ± 12.1 |
146 ± 16.4 |
4830 ± 556 |
| FE5 |
3620 ± 266 |
324 ± 25.5 |
332 ± 25.5 |
202 ± 20.8 |
6620 ± 689 |
| FE6 |
5950 ± 365 |
918 ± 55.6 |
245 ± 21.7 |
221 ± 23.3 |
7110 ± 774 |
| FE7 |
3500 ± 321 |
752 ± 53.2 |
55.9 ± 5.17 |
32.6 ± 4.75 |
1050 ± 161 |
| FE8 |
1410 ± 110 |
161 ± 12.2 |
103 ± 9.13 |
88.7 ± 10.9 |
2880 ± 356 |
| FE9 |
1260 ± 125 |
100 ± 10.8 |
144 ± 12.8 |
112 ± 10.6 |
3650 ± 342 |
| FE10 |
874 ± 77.2 |
132 ± 12.8 |
186 ± 15.3 |
145 ± 15.7 |
4750 ± 717 |
| BE1 |
16.0 ± 2.33 |
1.00 ± 0.12 |
1.58 ± 0.09 |
1.02 ± 0.12 |
33.4 ± 4.01 |
| BE2 |
24.8 ± 3.12 |
1.84 ± 0.23 |
4.62 ± 0.24 |
3.63 ± 0.36 |
121 ± 11.3 |
| BE3 |
14.0 ± 2.06 |
0.60 ± 0.05 |
2.34 ± 0.19 |
2.01 ± 0.28 |
66.6 ± 8.99 |
| BE4 |
20.3 ± 2.11 |
1.61 ± 0.18 |
4.81 ± 0.33 |
1.61 ± 0.18 |
54.6 ± 6.03 |
| BE5 |
14.8 ± 1.56 |
1.24 ± 0.16 |
2.97 ± 0.21 |
0.58 ± 0.08 |
19.2 ± 2.66 |
| BE6 |
11.3 ± 1.23 |
1.28 ± 0.12 |
3.35 ± 0.31 |
1.99 ± 0.25 |
66.1 ± 8.04 |
| BE7 |
13.4 ± 1.26 |
1.84 ± 0.19 |
2.56 ± 0.21 |
1.18 ± 0.13 |
40.0 ± 4.21 |
| BE8 |
8.20 ± 1.11 |
1.40 ± 0.17 |
1.92 ± 0.13 |
1.05 ± 0.13 |
34.3 ± 4.09 |
| BE9 |
29.6 ± 3.02 |
1.82 ± 0.20 |
4.55 ± 0.34 |
3.33 ± 0.49 |
107 ± 16.0 |
| BE10 | 32.0 ± 2.83 | 2.20 ± 0.25 | 6.13 ± 0.51 | 4.25 ± 0.48 | 194 ± 15.7 |