Table 5.

Recovery studies of trace metal ions from some real sample.

Real samples	Ions	Added (μg/g)	Found (μg/g)	Recovery %	RSD %
Sour orange	Ni	0.0	0.94		3.9
		0.5	1.47	106.0	3.1
	Cd	0.0	0.10		4.1
		0.5	0.62	104.0	3.5
	Zn	0.0	10.65		3.0
		0.5	11.12	94.0	2.6
	Fe	0.0	15.52		3.2
		0.5	16.01	98.0	2.1
	Co	0.0	0.19		3.8
		0.5	0.70	102.0	3.4
Olive	Ni	0.0	1.08		3.1
		0.5	1.60	104.0	2.6
	Cd	0.0	0.13		4.2
		0.5	0.64	102.0	3.8
	Zn	0.0	11.13		3.7
		0.5	11.66	106.0	3.0
	Fe	0.0	14.92		3.8
		0.5	15.40	96.0	3.4
	Co	0.0	0.20		3.7
		0.5	0.69	98.0	3.1
Tangerine	Ni	0.0	0.30		3.9
		0.5	0.81	102.0	3.6
	Cd	0.0	0.15		4.3
		0.5	0.68	106.0	3.8
	Zn	0.0	10.47		2.9
		0.5	11.00	106.0	2.5
	Fe	0.0	13.73		3.1
		0.5	14.21	98.0	2.5
	Co	0.0	0.21		3.9
		0.5	0.70	97.0	3.4
Pear	Ni	0.0	0.23		3.8
		0.5	0.72	98.0	3.4
	Cd	0.0	0.11		3.5
		0.5	0.62	102.0	3.0
	Zn	0.0	12.73		3.0
		0.5	13.25	104.0	2.6
	Fe	0.0	14.51		3.0
		0.5	15.02	102.0	2.4
	Co	0.0	0.34		3.7
		0.5	0.83	98.0	3.2
Carrot	Ni	0.0	0.22		3.8
		1.0	1.21	99.0	3.2
	Cd	0.0	0.40		3.6
		1.0	1.42	102.0	3.3
	Zn	0.0	15.11		3.9
		1.0	16.13	102.3	3.4
	Fe	0.0	17.15		3.1
		1.0	18.10	95.4	2.8
	Co	0.0	0.41		3.8
		1.0	1.45	104.0	3.5
Strawberry	Ni	0.0	0.20		4.2
		1.0	1.18	98.0	3.6
	Cd	0.0	0.25		3.8
		1.0	1.21	96.0	3.3
	Zn	0.0	13.15		3.2
		1.0	14.10	95.0	2.6
	Fe	0.0	14.95		3.0
		1.0	15.99	104.0	2.6
	Co	0.0	0.31		3.8
		1.0	1.36	105.0	3.3