Table 1.

Median element concentrations (range) in urine samples from patients in Main Island (n = 51) and Vieques (n = 32), Puerto Rico.

Element	Mainland (μg/L)	Vieques (μg/L)	p-Value
Aluminiun	7.95 (0.00–30.10)	14.20 (1.80–67.80)	<0.001
Antimony	0.038 (0.00–0.18)	0.05 (0.00–1.33)	0.456
Arsenic	16.00 (0.00–82.00)	22.50 (7.00–175.00)	0.016
Barium	1.50 (0.00–6.70)	1.50 (0.30–13.80)	0.376
Bismuth	0.00 (0.00–6.21)	0.00 (0.00–54.85)	0.892
Cadmium	0.24 (0.00–5.06)	0.43 (0.09–1.55)	0.016
Cesium	5.10 (0.22–16.55)	4.30 (2.20–12.80)	0.165
Gadolinium	0.07 (0.00–20.85)	0.02 (0.00–2.45)	0.028
Gallium	0.006 (0.00–0.037)	0.01 (0.00–0.03)	0.003
Lead	1.050 (0.10–13.60)	5.70 (0.40–37.60)	<0.001
Mercury	0.60 (0.00–7.43)	0.71 (0.00–1.90)	0.648
Nickel	0.85 (0.00–15.39)	0.42 (0.00–17.16)	0.083
Niobium	0.00 (0.00–0.37)	0.00 (0.00)	0.006
Platinum	0.01 (0.00–3.34)	0.00 (0.00–0.13)	0.006
Rubidium	(0.20–3488.00)	1136.50 (546.00–2393.00)	0.354
Thalium	0.15 (0.01–0.88)	0.14 (0.07–0.37)	0.153
Thorium	0.00 (0.00)	0.00 (0.00)	NA 1
Tin	1.18 (0.09–12.11)	1.67 (0.16–123.08)	0.090
Tungsten	0.00 (0.00–0.20)	0.05 (0.00–0.32)	0.812
Uranium	0.00 (0.00–0.20)	0.02 (0.00–0.05)	0.001

¹ NA = Not available.