Table 3.

Elements concentration in maternal serum (μg L⁻¹)

	Min	Max	Median	Mean	SD	Reference values range (2.5th–97.5th percentile)
Mg	9617	20,976	15,849	15,567	2377	15,189–15,945
Co	0.320	0.903	0.582	0.593	0.135	0.570–0.615
Cu	1094	2869	2097	2103	366.8	2043–2163
Zn	361.5	1885	929.0	971.2	278.8	927.0–1015
Sr	23.2	141.0	48.81	52.23	20.01	48.54–55.92
Cd	0.038	0.248	0.124	0.126	0.051	0.116–0.137
Ba	0.278	51.35	18.87	18.12	11.24	16.32–19.92
Pb	0.203	7.93	1.30	1.62	1.29	1.40–1.85
U	0.160	0.669	0.326	0.348	0.100	0.333–0.364
Ca	48,240	163,350	90,952	93,976	21,014	90,668–97,285
Cr	0.698	18.86	3.56	4.77	4.03	4.06–5.47
Al.	71.22	933.0	284.8	334.8	181.9	305.7–363.9
Mn	0.749	25.91	9.30	10.54	5.33	9.63–11.44
V	0.095	0.895	0.293	0.321	0.140	0.299–0.343
Fe	291.7	2802	1130	1245	507.9	1156–1333
As	0.118	19.43	3.33	3.85	3.39	3.30–4.40
Se	19.09	89.19	53.54	54.41	12.10	52.47–56.35
Sb	0.016	0.387	0.146	0.152	0.073	0.140–0.164

Min minimum value, max maximum value, sd standard deviation