Table 3.

Metal content (± uncertainties) in eight pomace varieties samples.

[Metal/Sample DM]/mg/kg−	Sample Metal	Merlot M2	Talia T1	Syrah S2	Arinto A2	Aragonese Ar2	Arinto A4	Cabernet C3	Trincadeira Tr2	Mean (SD)
	Al	139.10	181.98	338.82	57.17	188.24	80.29	137.04	192.21	164.36
		(±27.96)	(±36.58)	(±68.10)	(±11.49)	(±37.84)	(±16.14)	(±27.55)	(±38.63)	(86.21)
	As	0.26	0.29	0.18	0.10	0.21	0.11	0.20	0.36	0.21
		(±0.05)	(±0.05)	(±0.03)	(±0.02)	(±0.04)	(±0.02)	(±0.04)	(±0.07)	(0.09)
	Cd	0.25	0.25	0.25	0.25	0.25	0.25	0.25	0.25
		(±0.07)	(±0.07)	(±0.07)	(±0.07)	(±0.07)	(±0.07)	(±0.07)	(±0.07)
	Cr	2.50	2.50	2.50	2.50	2.50	2.50	2.50	2.50
		(±0.41)	(±0.41)	(±0.41)	(±0.41)	(±0.41)	(±0.41)	(±0.41)	(±0.41)
	Cu	30.06	87.67	48.68	12.78	22.89	6.17	16.03	34.71	32.37
		(±3.77)	(±10.99)	(±6.10)	(±1.60)	(±2.87)	(±0.77)	(±2.01)	(±4.35)	(26.08)
	Fe	119.20	177.05	202.69	106.19	187.61	86.59	160.61	215.09	156.88
		(±29.08)	(±43.20)	(±49.46)	(±25.91)	(±45.78)	(±21.13)	(±39.19)	(±52.48)	(47.48)
	Hg	0.004	0.004	0.004	0.004	0.004	0.004	0.004	0.004
		(±0.001)	(±0.001)	(±0.001)	(±0.001)	(±0.001)	(±0.001)	(±0.001)	(±0.001)
	Li	ND	2.50	ND	2.50	ND	2.50	2.50	2.50
			(±0.47)				(±0.47)	(±0.47)	(±0.47)	(±0.47)
	Mn	84.12	13.00	66.89	37.02	71.32	12.56	19.12	54.50	44.81
		(±9.96)	(±1.54)	(±7.92)	(±4.38)	(±8.44)	(±1.49)	(±2.26)	(±6.45)	(28.28)
	Ni	3.75	3.75	3.75	3.75	3.75	3.75	3.75	3.75
		(±0.60)	(±0.60)	(±0.60)	(±0.60)	(± 0.60)	(±0.60)	(±0.60)	(±0.60)
	Pb	5.00	5.00	5.00	5.00	ND	5.00	5.00	5.00
		(±0.81)	(±0.81)	(±0.81)	(±0.81)		(±0.81)	(±0.81)	(±0.81)
	Zn	13.81	28.26	15.55	6.64	11.51	1.60	11.58	10.58	12.44
		(±2.01)	(±4.11)	(±2.26)	(±0.96)	(±1.67)	(±0.23)	(±1.68)	(±1.54)	(7.73)