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

Table 4

Mean concentrations (mg kg⁻¹) of elements in Fabronia ciliaris.

Element		Site 1; Alameda	Site 2; Reforma	Site 3; Hípico	Site 4; Pila	Site 5; Santin	Site 6; Tollocan
		Concentration in mg/Kg (𝑛=6)
K	Mean	2824	4212	3787	4147	4771	4570
	SD	138	115	308	234	240	254
Ca	Mean	4818	4589	5993	3880	10245	9275
	SD	367	196	551	182	471	450
Ti	Mean	372	338	288	346	516	458
	SD	29	10	17	16	18	22
V	Mean	29.20	34.22	19.23	27.23	23.02	90.92
	SD	2.07	2.75	1.57	2.40	1.80	3.12
Cr	Mean	33.34	27.21	22.32	19.93	21.47	28.50
	SD	2.10	0.80	1.15	1.12	1.46	1.20
Mn	Mean	172	119	132	161	292	214
	SD	9	2	9	8	10	12
Fe	Mean	9332	6746	5616	6432	9562	10708
	SD	696	191	310	214	232	344
Ni	Mean	10.88	11.08	7.40	6.20	8.65	19.04
	SD	1.16	0.95	0.80	0.70	0.63	1.28
Cu	Mean	32.12	40.20	26.17	20.68	27.36	66.78
	SD	2.26	0.86	1.00	0.81	1.38	2.58
Zn	Mean	145	179	151	136	220	406
	SD	12	4.24	3	4	16	20
Rb	Mean	13.40	10.40	11.74	10.78	20.70	14.01
	SD	0.50	0.70	0.73	0.64	1.00	1.00
Sr	Mean	40.54	41.01	67.00	45.80	49.14	109.00
	SD	2.90	1.36	6.00	5.11	3.87	7.67
Pb	Mean	112	107	32.60	25.31	20.36	70.30
	SD	5	2.38	2.26	1.60	1.51	3.81
Sum element concentration		17934	16543	16154	15254	25777	25999

SD: standard deviation.