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

Table 6

Moss enrichment factors (EFs) from samples sites at the Metropolitan Zone of the Toluca Valley.

Element	Site 1; Alameda	Site 2; Reforma	Site 3; Hípico	Site 4; Pila	Site 5; Santin	Site 6; Tollocan	EF mean
K	5	7	7	7	6	6	6
Ca	2	2	3	2	4	4	3
V	3	4	2	3	2	6	3
Cr	7	5	5	4	3	5	5
Mn	2	1	2	2	2	2	2
Fe	3	2	2	2	2	3	2
Ni	4	4	1	2	2	5	3
Cu	26	33	24	18	16	45	27
Zn	17	21	20	17	19	39	22
Pb	76	72	24	18	10	39	40