Assessment of Spatial Variability of Heavy Metals in Metropolitan Zone of Toluca Valley, Mexico, Using the Biomonitoring Technique in Mosses and TXRF Analysis

Table 5

Mean concentration in reference soils at the Metropolitan Zone of the Toluca Valley.

Concentration in mg kg^−1(𝑛=36)
Element	Mean
K	6633
Ca	19563
Ti	3767
V	95
Cr	51
Mn	852
Fe	30968
Ni	30
Cu	12
Zn	86
Rb	NR
Sr	NR
Pb	15

NR: not reported; Soil: values obtained from Tejeda et al., 2012 [34].