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 1
Element concentration (mg kg−1) in moss from the first sampling.
| Sampling sites | As | Cr | Hg | Se | Co | Cs | Sc | Sb | Rb | Ce | Eu | La | Yb |
| Negrete (UR) | 2.12 ± 0.16 | 40.70 ± 2.68 | 0.21 ± 0.06 | 1.52 ± 0.28 | 2.66 ± 0.15 | 1.43 ± 0.17 | 4.08 ± 0.16 | 1.10 ± 0.22 | 26.50 ± 1.41 | 5.61 ± 0.58 | 0.400 ± 0.11 | 3.43 ± 0.12 | 0.17 ± 0.04 | Alameda (UR) | 2.43 ± 0.16 | 51.09 ± 3.37 | 0.27 ± 0.07 | 1.80 ± 0.34 | 2.55 ± 0.14 | 1.23 ± 0.15 | 4.29 ± 0.16 | 2.92 ± 0.59 | 23.75 ± 1.34 | 7.04 ± 1.20 | 0.402 ± 0.11 | 4.30 ± 0.15 | 0.50 ± 0.11 | Reforma (UR) | 3.69 ± 0.30 | 39.54 ± 3.14 | 0.36 ± 0.09 | 0.86 ± 0.17 | 2.01 ± 0.10 | 0.67 ± 0.11 | 2.32 ± 0.09 | 0.67 ± 0.11 | 14.61 ± 1.45 | 4.69 ± 0.45 | 0.24 ± 0.07 | 2.71 ± 0.09 | 0.14 ± 0.03 | Hípico (UR) | 1.77 ± 0.13 | 43.33 ± 2.82 | 0.28 ± 0.07 | 1.34 ± 0.25 | 1.74 ± 0.09 | 0.72 ± 0.09 | 2.60 ± 0.10 | 2.27 ± 0.46 | 19.74 ± 1.15 | 4.33 ± 0.54 | 0.15 ± 0.05 | 2.40 ± 0.09 | 0.12 ± 0.03 | Pilita (UR) | 2.25 ± 0.12 | 28.26 ± 1.78 | 0.44 ± 0.08 | 1.38 ± 0.15 | 2.30 ± 0.12 | 0.86 ± 0.11 | 2.96 ± 0.12 | 1.00 ± 0.13 | 27.38 ± 2.03 | 10.31 ± 0.85 | 0.22 ± 0.06 | 6.20 ± 0.22 | 0.46 ± 0.11 | Santín (UR) | 1.52 ± 0.12 | 28.35 ± 1.77 | 0.27 ± 0.09 | 1.33 ± 0.16 | 4.50 ± 0.22 | 1.18 ± 0.13 | 4.90 ± 0.20 | 0.77 ± 0.10 | 41.60 ± 2.90 | 13.85 ± 1.13 | 0.29 ± 0.08 | 8.07 ± 0.26 | 0.69 ± 0.17 | Tollocán (UR) | 4.87 ± 0.40 | 43.97 ± 3.50 | 0.32 ± 0.08 | 1.06 ± 0.21 | 2.78 ± 0.14 | 0.91 ± 0.14 | 3.45 ± 0.14 | 0.84 ± 0.14 | 18.81 ± 1.84 | 7.01 ± 0.67 | 0.39 ± 0.11 | 3.65 ± 0.14 | 0.20 ± 0.05 | Lomas (TR) | 1.07 ± 0.07 | 13.38 ± 0.82 | 0.13 ± 0.03 | 0.85 ± 0.13 | 1.09 ± 0.06 | 0.29 ± 0.05 | 1.16 ± 0.04 | 0.53 ± 0.10 | 8.49 ± 0.75 | 2.03 ± 0.24 | 0.11 ± 0.029 | 1.32 ± 0.05 | 0.08 ± 0.02 | San Miguel (TR) | 1.73 ± 0.11 | 29.49 ± 1.82 | 0.28 ± 0.01 | 1.26 ± 0.26 | 2.81 ± 0.14 | 0.75 ± 0.10 | 2.95 ± 0.12 | 1.21 ± 0.16 | 27.08 ± 1.88 | 10.71 ± 0.87 | 0.22 ± 0.06 | 6.60 ± 0.21 | 0.50 ± 0.12 | San Antonio (PA) | 3.25 ± 0.22 | 16.34 ± 1.31 | 0.36 ± 0.08 | 0.69 ± 0.14 | 1.75 ± 0.09 | 0.91 ± 0.13 | 1.78 ± 0.07 | 0.24 ± 0.04 | 25.51 ± 2.28 | 3.20 ± 0.34 | 0.19 ± 0.05 | 1.97 ± 0.07 | 0.09 ± 0.02 | Cacalomacán (PA) | 1.13 ± 0.10 | 17.02 ± 1.12 | 0.21 ± 0.06 | 0.91 ± 0.17 | 1.52 ± 0.08 | 0.61 ± 0.08 | 1.99 ± 0.08 | 0.35 ± 0.08 | 13.03 ± 0.76 | 3.49 ± 0.35 | 0.20 ± 0.06 | 1.97 ± 0.07 | 0.12 ± 0.03 | Ciervita (PA) | 0.95 ± 0.09 | 11.31 ± 0.73 | 0.25 ± 0.05 | 0.93 ± 0.16 | 56.82 ± 0.87 | 0.83 ± 0.15 | 1.24 ± 0.05 | 0.44 ± 0.11 | 21.04 ± 2.64 | 2.33 ± 0.26 | 0.11 ± 0.029 | 1.26 ± 0.05 | 0.07 ± 0.02 |
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Higher concentration.
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