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 sitesAsCrHgSeCoCsScSbRbCeEuLaYb

Negrete (UR)2.12 ± 0.1640.70 ± 2.680.21 ± 0.061.52 ± 0.282.66 ± 0.151.43 ± 0.174.08 ± 0.161.10 ± 0.2226.50 ± 1.415.61 ± 0.580.400 ± 0.113.43 ± 0.120.17 ± 0.04
Alameda (UR)2.43 ± 0.1651.09 ± 3.370.27 ± 0.071.80 ± 0.342.55 ± 0.141.23 ± 0.154.29 ± 0.162.92 ± 0.5923.75 ± 1.347.04 ± 1.200.402 ± 0.114.30 ± 0.150.50 ± 0.11
Reforma (UR) 3.69 ± 0.3039.54 ± 3.140.36 ± 0.090.86 ± 0.172.01 ± 0.100.67 ± 0.112.32 ± 0.090.67 ± 0.1114.61 ± 1.454.69 ± 0.450.24 ± 0.072.71 ± 0.090.14 ± 0.03
Hípico (UR)1.77 ± 0.1343.33 ± 2.820.28 ± 0.071.34 ± 0.251.74 ± 0.090.72 ± 0.092.60 ± 0.102.27 ± 0.4619.74 ± 1.154.33 ± 0.540.15 ± 0.052.40 ± 0.090.12 ± 0.03
Pilita (UR)2.25 ± 0.1228.26 ± 1.780.44 ± 0.081.38 ± 0.152.30 ± 0.120.86 ± 0.112.96 ± 0.121.00 ± 0.1327.38 ± 2.0310.31 ± 0.850.22 ± 0.066.20 ± 0.220.46 ± 0.11
Santín (UR)1.52 ± 0.1228.35 ± 1.770.27 ± 0.091.33 ± 0.164.50 ± 0.221.18 ± 0.134.90 ± 0.200.77 ± 0.1041.60 ± 2.9013.85 ± 1.130.29 ± 0.088.07 ± 0.260.69 ± 0.17
Tollocán (UR)4.87 ± 0.4043.97 ± 3.500.32 ± 0.081.06 ± 0.212.78 ± 0.140.91 ± 0.143.45 ± 0.140.84 ± 0.1418.81 ± 1.847.01 ± 0.670.39 ± 0.113.65 ± 0.140.20 ± 0.05
Lomas (TR)1.07 ± 0.0713.38 ± 0.820.13 ± 0.030.85 ± 0.131.09 ± 0.060.29 ± 0.051.16 ± 0.040.53 ± 0.108.49 ± 0.752.03 ± 0.240.11 ± 0.0291.32 ± 0.050.08 ± 0.02
San Miguel (TR)1.73 ± 0.1129.49 ± 1.820.28 ± 0.011.26 ± 0.262.81 ± 0.140.75 ± 0.102.95 ± 0.121.21 ± 0.1627.08 ± 1.8810.71 ± 0.870.22 ± 0.066.60 ± 0.210.50 ± 0.12
San Antonio (PA)3.25 ± 0.2216.34 ± 1.310.36 ± 0.080.69 ± 0.141.75 ± 0.090.91 ± 0.131.78 ± 0.070.24 ± 0.0425.51 ± 2.283.20 ± 0.340.19 ± 0.051.97 ± 0.070.09 ± 0.02
Cacalomacán (PA)1.13 ± 0.1017.02 ± 1.120.21 ± 0.060.91 ± 0.171.52 ± 0.080.61 ± 0.081.99 ± 0.080.35 ± 0.0813.03 ± 0.763.49 ± 0.350.20 ± 0.061.97 ± 0.070.12 ± 0.03
Ciervita (PA)0.95 ± 0.0911.31 ± 0.730.25 ± 0.050.93 ± 0.1656.82 ± 0.870.83 ± 0.151.24 ± 0.050.44 ± 0.1121.04 ± 2.642.33 ± 0.260.11 ± 0.0291.26 ± 0.050.07 ± 0.02

Higher concentration.