Table 5
Recovery rates of the hazardous metals according to different migrant solution at 100°C for 30 min

Parameter	Distilled water		Citric acid solution (0.5%)		NaCl solution (1%)
	Recovery (%)1)	RSD (%)2)	Recovery (%)	RSD (%)	Recovery (%)	RSD (%)
	Pb	100.5	1.22	101.3	0.82	99.8	1.26
As	99.8	1.51	101.2	0.53	103.9	0.91
Cd	101.1	0.94	101.6	1.10	100.6	1.94
Ni	103.3	0.68	105.1	0.44	104.5	2.64
Al	100.4	0.87	101.5	2.07	99.4	2.42

Average values obtained from three measurements.
Standard deviation/Average value×100.