Application of Neutron Activation Analysis for Determination of As, Cr, Hg, and Se in Mosses in the Metropolitan Area of the Valley of Toluca, Mexico

Table 3

Element concentration (mg kg⁻¹) in topsoil sampled.

Sampling sites

As

Cr

Hg

Se

Co

Cs

Sc

Sb

Rb

Ce

Eu

La

Yb

Negrete (UR)

3.95 ± 0.34

57.43 ± 1.21

2.13 ± 0.13

0.38 ± 0.02

19.91 ± 0.49

2.21 ± 0.09

16.05 ± 0.22

0.54 ± 0.06

52.94 ± 4.22

46.31 ± 0.876

1.77 ± 0.05

11.41 ± 0.49

1.04 ± 0.04

Alameda (UR)

1.60 ± 0.25

54.47 ± 1.19

3.17 ± 0.18

0.46 ± 0.02

13.79 ± 0.25

2.81 ± 0.08

14.12 ± 0.19

2.05 ± 0.08

63.17 ± 4.69

69.97 ± 8.22

1.87 ± 0.06

15.94 ± 0.49

1.06 ± 0.05

Reforma (UR)

1.56 ± 0.29

94.04 ± 2.66

0.55 ± 0.09

0.57 ± 0.05

16.90 ± 1.59

2.38 ± 0.08

17.03 ± 0.24

1.55 ± 0.08

53.01 ± 3.69

51.94 ± 1.05

1.95 ± 0.04

11.82 ± 0.48

1.12 ± 0.12

Hípico (UR)

1.7 ± 0.09

65.93 ± 1.41

1.99 ± 0.23

0.36 ± 0.02

19.21 ± 0.35

2.69 ± 0.09

17.17 ± 0.24

0.78 ± 0.10

50.85 ± 4.27

23.17 ± 1.17

1.86 ± 0.04

13.37 ± 0.36

1.19 ± 0.05

Pilita (UR)

1.31 ± 0.20

50.76 ± 1.09

2.87 ± 0.16

0.27 ± 0.03

15.38 ± 0.31

2.26 ± 0.10

14.26 ± 0.21

45.29 ± 3.89

48.83 ± 1.13

1.77 ± 0.04

10.57 ± 0.31

0.75 ± 0.03

Santín (UR)

0.80 ± 0.22

160.05 ± 4.87

2.82 ± 0.25

0.40 ± 0.02

7.46 ± 0.22

3.89 ± 0.13

24.19 ± 0.34

3.22 ± 0.10

62.36 ± 4.69

66.23 ± 6.89

0.67 ± 0.03

12.49 ± 0.42

1.15 ± 0.05

Tollocán (UR)

1.69 ± 0.31

73.07 ± 3.57

2.43 ± 0.16

0.65 ± 0.07

15.98 ± 0.29

2.65 ± 0.09

13.11 ± 0.18

2.51 ± 0.10

55.88 ± 2.92

55.41 ± 1.11

1.66 ± 0.02

12.96 ± 0.44

1.15 ± 0.09

Lomas (TR)

1.85 ± 0.31

87.70 ± 1.88

1.30 ± 0.22

0.42 ± 0.02

24.51 ± 0.43

2.81 ± 0.16

20.69 ± 0.29

1.02 ± 0.13

62.41 ± 4.91

32.11 ± 1.08

1.79 ± 0.04

17.01 ± 0.49

1.40 ± 0.05

Acazulco (TR)

2.01 ± 0.28

133.50 ± 3.38

2.68 ± 0.22

0.73 ± 0.05

19.58 ± 0.34

2.17 ± 0.10

14.30 ± 0.21

0.56 ± 0.14

22.19 ± 4.41

37.86 ± 1.45

1.52 ± 0.04

19.79 ± 0.44

1.56 ± 0.09

Pedregal (TR)

1.88 ± 0.30

53.84 ± 1.20

2.38 ± 0.17

0.50 ± 0.03

11.25 ± 0.20

2.22 ± 0.09

10.54 ± 0.15

0.9 ± 0.03

31.62 ± 3.74

30.58 ± 1.09

1.39 ± 0.03

15.02 ± 0.31

1.12 ± 0.08

San Miguel (TR)

2.35 ± 0.29

114.61 ± 2.81

3.37 ± 0.45

0.54 ± 0.03

16.02 ± 0.29

2.03 ± 0.07

11.28 ± 0.16

0.89 ± 0.06

26.21 ± 2.05

39.29 ± 1.13

1.31 ± 0.03

19.78 ± 0.89

1.68 ± 0.12

Ameyalco (TR)

3.46 ± 0.63

113.78 ± 2.61

2.90 ± 0.20

0.60 ± 0.06

16.52 ± 0.33

2.31 ± 0.12

13.61 ± 0.19

1.25 ± 0.15

29.96 ± 4.40

39.29 ± 1.13

1.62 ± 0.04

20.73 ± 0.45

1.79 ± 0.09

San Antonio (PA)

1.65 ± 0.33

155.03 ± 4.23

2.93 ± 0.16

0.54 ± 0.06

19.50 ± 0.35

1.41 ± 0.06

14.26 ± 0.21

0.38 ± 0.08

18.64 ± 1.72

31.95 ± 0.67

1.11 ± 0.06

14.95 ± 0.50

1.38 ± 0.08

San Diego (PA)

3.72 ± 0.70

66.05 ± 4.80

3.38 ± 0.44

0.78 ± 0.04

10.06 ± 0.75

2.31 ± 0.12

5.45 ± 0.11

4.86 ± 0.33

22.69 ± 5.49

52.25 ± 1.75

0.66 ± 0.04

18.51 ± 0.40

1.64 ± 0.10

Cacalomacán (PA)

1.96 ± 0.26

51.45 ± 1.01

1.56 ± 0.21

0.42 ± 0.02

19.08 ± 0.34

2.99 ± 0.10

17.01 ± 0.24

0.52 ± 0.09

35.44 ± 3.37

33.68 ± 1.19

1.94 ± 0.04

17.03 ± 0.48

1.26 ± 0.04

Ciervita (PA)

1.59 ± 0.20

48.45 ± 0.88

1.21 ± 0.22

0.36 ± 0.02

16.23 ± 0.30

2.93 ± 0.11

14.24 ± 0.19

0.55 ± 0.09

34.93 ± 3.45

26.35 ± 1.11

1.67 ± 0.04

13.31 ± 0.39

1.06 ± 0.05

Higher concentration.