Research Article
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 2
Element concentration (mg kg−1) in moss from the second sampling.
| Sampling sites | As | Cr | Hg | Se | Co | Cs | Sc | Sb | Rb | Ce | Eu | La | Yb |
| Negrete (UR) | 1.72 ± 0.16 | 32.47 ± 2.05 | 0.22 ± 0.06 | 1.96 ± 0.43 | 3.27 ± 0.16 | 1.13 ± 0.12 | 3.75 ± 0.15 | 1.11 ± 0.20 | 23.88 ± 5.39 | 4.11 ± 0.43 | 0.38 ± 0.10 | 2.08 ± 0.07 | 0.093 ± 0.02 | Alameda (UR) | 1.91 ± 0.13 | 29.28 ± 1.55 | 0.34 ± 0.08 | 1.98 ± 0.37 | 3.28 ± 0.18 | 0.81 ± 0.09 | 3.62 ± 0.14 | 1.74 ± 0.29 | 22.03 ± 5.02 | 5.87 ± 0.73 | 0.31 ± 0.08 | 3.47 ± 0.12 | 0.159 ± 0.03 | Reforma (UR) | 1.60 ± 0.09 | 23.42 ± 1.41 | 0.36 ± 0.07 | 1.11 ± 0.21 | 1.89 ± 0.10 | 0.67 ± 0.08 | 2.51 ± 0.10 | 2.02 ± 0.36 | 16.33 ± 3.81 | 9.92 ± 0.88 | 0.26 ± 0.07 | 5.41 ± 0.19 | 0.259 ± 0.05 | Hípico (UR) | 1.50 ± 0.10 | 17.52 ± 3.24 | 0.14 ± 0.06 | 1.60 ± 0.30 | 1.83 ± 0.10 | 0.54 ± 0.07 | 2.37 ± 0.09 | 1.33 ± 0.22 | 18.34 ± 4.14 | 3.13 ± 0.33 | 0.21 ± 0.06 | 2.19 ± 0.08 | 0.108 ± 0.02 | Pilita (UR) | 2.24 ± 0.13 | 19.05 ± 1.02 | 0.27 ± 0.07 | 2.20 ± 0.40 | 2.36 ± 0.13 | 0.70 ± 0.08 | 2.98 ± 0.12 | 1.00 ± 0.17 | 15.25 ± 3.50 | 4.28 ± 0.46 | 0.27 ± 0.07 | 2.80 ± 0.10 | 0.153 ± 0.03 | Santín (UR) | 1.92 ± 0.14 | 28.67 ± 1.80 | 0.43 ± 0.10 | 2.24 ± 0.49 | 2.75 ± 0.14 | 1.06 ± 0.12 | 3.59 ± 0.14 | 1.42 ± 0.26 | 28.08 ± 6.25 | 3.11 ± 0.36 | 0.32 ± 0.09 | 1.94 ± 0.07 | 0.083 ± 0.02 | Tollocán (UR) | 2.29 ± 0.20 | 48.59 ± 3.02 | 0.32 ± 0.07 | 2.89 ± 0.62 | 3.17 ± 0.16 | 1.01 ± 0.11 | 3.19 ± 0.13 | 3.07 ± 0.55 | 24.46 ± 5.48 | 4.26 ± 0.50 | 0.40 ± 0.11 | 2.45 ± 0.09 | 0.115 ± 0.02 | Lomas (TR) | 0.94 ± 0.08 | 14.00 ± 0.75 | 0.20 ± 0.06 | 1.05 ± 0.20 | 5.41 ± 0.31 | 2.60 ± 0.44 | 1.53 ± 0.06 | 0.78 ± 0.13 | 9.39 ± 2.22 | 2.45 ± 0.27 | 0.13 ± 0.04 | 1.64 ± 0.06 | 0.078 ± 0.01 | Acazulco (TR) | 1.12 ± 0.07 | 13.12 ± 0.80 | 0.13 ± 0.03 | 1.27 ± 0.24 | 2.82 ± 0.14 | 0.88 ± 0.09 | 2.99 ± 0.12 | 0.62 ± 0.11 | 32.89 ± 7.20 | 12.18 ± 1.06 | 0.33 ± 0.09 | 6.07 ± 0.21 | 0.382 ± 0.08 | Pedregal (TR) | 1.09 ± 0.10 | 10.10 ± 0.68 | 0.30 ± 0.08 | 1.10 ± 0.31 | 1.64 ± 0.09 | 0.71 ± 0.11 | 1.44 ± 5.86 | 0.80 ± 0.11 | 32.62 ± 7.21 | 2.28 ± 0.30 | 0.40 ± 0.11 | 1.50 ± 0.06 | 0.072 ± 0.01 | San Miguel (TR) | 2.41 ± 0.17 | 28.03 ± 1.86 | 0.27 ± 0.06 | 2.77 ± 0.72 | 5.00 ± 0.24 | 1.71 ± 0.26 | 5.19 ± 0.21 | 1.27 ± 0.18 | 28.30 ± 6.33 | 7.78 ± 0.73 | 0.59 ± 0.16 | 4.43 ± 0.16 | 0.242 ± 0.05 | Ameyalco (TR) | 0.97 ± 0.09 | 6.37 ± 0.45 | 0.12 ± 0.03 | 0.75 ± 0.23 | 1.16 ± 6.25 | 0.46 ± 0.07 | 1.22 ± 5.04 | 0.44 ± 0.07 | 15.75 ± 3.59 | 2.35 ± 0.25 | 0.13 ± 0.03 | 1.47 ± 0.05 | 0.078 ± 0.01 | San Antonio (PA) | 1.73 ± 0.12 | 23.08 ± 1.46 | 0.24 ± 0.04 | 1.46 ± 0.32 | 2.60 ± 0.13 | 1.27 ± 0.14 | 2.90 ± 0.11 | 1.02 ± 0.18 | 33.26 ± 7.35 | 3.10 ± 0.30 | 0.27 ± 0.07 | 2.01 ± 0.07 | 0.094 ± 0.07 | San Diego (PA) | 1.23 ± 0.06 | 7.82 ± 0.49 | 0.34 ± 0.21 | 1.05 ± 0.19 | 2.14 ± 0.11 | 0.75 ± 0.08 | 1.74 ± 0.07 | 0.75 ± 0.14 | 22.93 ± 5.14 | 8.20 ± 0.70 | 0.17 ± 0.04 | 4.82 ± 0.17 | 0.222 ± 0.04 | Cacalomacán (PA) | 1.14 ± 0.10 | 9.13 ± 0.63 | 0.21 ± 0.04 | 1.66 ± 0.51 | 2.02 ± 0.10 | 1.32 ± 0.20 | 2.04 ± 8.30 | 0.29 ± 0.04 | 22.13 ± 4.94 | 2.99 ± 0.29 | 0.21 ± 0.06 | 1.64 ± 0.06 | 0.093 ± 0.02 | Ciervita (PA) | 1.24 ± 0.14 | 9.26 ± 0.63 | 0.23 ± 0.05 | 1.74 ± 0.53 | 1.96 ± 0.10 | 0.91 ± 0.14 | 2.21 ± 0.09 | 0.27 ± 0.04 | 16.30 ± 3.64 | 4.29 ± 0.38 | 0.26 ± 0.07 | 2.16 ± 0.08 | 0.093 ± 0.021 |
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Higher concentration.
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