Table 1 Metal concentrations in soils, nettle leaves, and snail hepatopancreas in the study area (expressed as mg kg ^-1 d.w.)

Snail hepatopancreas

THR

8.219 ± 0.473

68.528 ± 4.648

100.439 ± 9.319

93.765 ± 10.303

0.526 ± 0.129

0.465 ± 0.045

0.557 ± 0.193

0.501 ± 0.085

THM1

23.063 ± 1.552

169.787 ± 16.821

104.351 ± 21.501

153.263 ± 19.119

17.196 ± 1.672

0.980 ± 0.294

1.156 ± 0.153

2.652 ± 0.707

THM2

25.984 ± 2.551

110.353 ± 5.137

64.130 ± 18.150

164.782 ± 3.515

3.231 ± 0.518

0.649 ± 0.356

1.041 ± 0.041

1.701 ± 0.821

THM3

9.684 ± 2.278

51.319 ± 2.957

32.690 ± 9.779

56.587 ± 6.224

0.529 ± 0.075

0.470 ± 0.260

0.560 ± 0.117

0.673 ± 0.333

THM4

8.610 ± 1.839

80.455 ± 1.763

68.212 ± 2.234

72.244 ± 8.659

1.410 ± 0.261

0.528 ± 0.161

0.552 ± 0.115

0.555 ± 0.125

THM5

33.071 ± 2.226

80.683 ± 7.994

55.347 ± 11.404

122.609 ± 15.295

3.675 ± 0.357

0.722 ± 0.216

1.180 ± 0.156

1.427 ± 0.380

THM6

24.005 ± 4.589

148.896 ± 13.544

131.322 ± 24.893

143.849 ± 19.170

4.792 ± 0.582

0.907 ± 0.199

1.085 ± 0.178

1.282 ± 0.093

THM7

9.632 ± 0.450

105.618 ± 9.972

84.592 ± 7.220

92.227 ± 10.907

5.914 ± 1.517

0.654 ± 0.048

0.728 ± 0.172

0.713 ± 0.192

MVL

17.783 ± 9.586

101.955 ± 39.471

80.135 ± 32.484

112.416 ± 39.343

4.659 ± 5.239

0.672 ± 0.261

0.858 ± 0.299

1.188 ± 0.794

Nettle leaves

THR

1.343 ± 0.039

6.782 ± 2.515

20.488 ± 4.036

22.439 ± 3.131

0.087 ± 0.009

0.143 ± 0.089

0.372 ± 0.256

0.298 ± 0.032

THM1

8.894 ± 1.735

21.713 ± 2.808

30.865 ± 1.429

13.657 ± 2.454

2.882 ± 0.447

0.206 ± 0.042

0.447 ± 0.147

11.934 ± 2.134

THM2

19.387 ± 3.863

34.957 ± 5.726

16.540 ± 3.613

22.524 ± 5.406

2.612 ± 0.789

0.214 ± 0.033

0.363 ± 0.242

9.779 ± 0.839

THM3

1.196 ± 0.342

32.563 ± 6.200

13.001 ± 2.716

7.547 ± 1.762

0.643 ± 0.203

0.189 ± 0.046

0.283 ± 0.117

24.545 ± 3.606

THM4

3.458 ± 0.412

33.900 ± 6.070

26.048 ± 3.524

9.136 ± 1.111

2.769 ± 0.875

0.203 ± 0.042

0.359 ± 0.152

9.470 ± 1.926

THM5

3.130 ± 0.611

8.191 ± 1.059

4.093 ± 0.189

23.666 ± 4.253

0.074 ± 0.011

0.154 ± 0.032

0.333 ± 0.109

0.240 ± 0.043

THM6

2.485 ± 0.191

9.686 ± 2.302

14.454 ± 0.652

17.359 ± 1.558

0.066 ± 0.025

0.151 ± 0.037

0.335 ± 0.206

2.368 ± 0.508

THM7

1.959 ± 0.329

13.093 ± 1.401

8.191 ± 0.423

18.629 ± 3.403

0.086 ± 0.018

0.154 ± 0.077

0.435 ± 0.068

0.203 ± 0.062

MVL

5.232 ± 6.081

20.111 ± 12.156

16.710 ± 8.750

16.870 ± 6.499

1.152 ±1.337

0.178 ± 0.052

0.366 ± 0.154

7.355 ± 8.221

Soil

THR

2.516 ± 1.343

9.453 ± 1.176

48.188 ± 8.752

115.309 ± 12.563

0.151 ± 0.019

1.421 ± 0.202

1.027 ± 0.178

4,758 ± 0,436

THM1

14.364 ± 2.881

32.481 ± 3.891

54.112 ± 9.427

163.388 ± 18.880

2.048 ± 0.369

2.198 ± 0.633

4.253 ± 0.393

14,766 ± 2,673

THM2

26.832 ± 3.309

52.293 ± 5.911

51.890 ± 4.267

199.860 ± 24.852

1.088 ± 0.176

2.706 ± 0.449

5.507 ± 0.493

39,336 ± 1,040

THM3

11.950 ± 2.359

48.711 ± 3.496

50.323 ± 4.773

168.028 ± 8.018

0.713 ± 0.257

2.001 ± 0.678

3.420 ± 0.243

21,414 ± 1,592

THM4

15.196 ± 2.885

50.713 ± 11.301

58.380 ± 10.557

16.519 ± 1.824

0.643 ± 0.092

2.395 ± 0.511

4.592 ± 1.220

52,954 ± 7,241

THM5

8.714 ± 1.748

22.588 ± 2.706

51.598 ± 8.989

162.102 ± 18.731

2.769 ± 0.499

1.784 ± 0.712

3.329 ± 0.308

10,409 ± 1,884

THM6

3.074 ± 0.468

13.472 ± 1.187

47.388 ± 3.667

111.410 ± 11.260

2.124 ± 0.183

1.858 ± 0.619

3.621 ± 0.976

11,589 ± 0,818

THM7

8.546 ± 1.865

29.051 ± 1.187

58.507 ± 9.479

179.529 ± 9.946

0.413 ± 0.066

1.639 ± 0.473

2.438 ± 0.366

10,604 ± 1,938

MVL

11.399 ± 7.687

32.345 ± 2.553

52.548 ± 7.734

139.518 ± 56.902

1.244 ± 0.932

2.000 ± 0.613

3.523 ± 1.407

20,729 ± 16,215

NC

20

100

900

-

1

15

20

20

ATV

100

300

1500

-

3

50

75

50