Table 2.

Determination of Cr(VI) in actual water samples.

Samples	Spiked (μM)	Founda(μM)	Recovery (%)	RSD (%) (n=3)
Tisanes	20	18.87	94.37	2.69
	40	38.58	96.46	1.58
	60	60.12	100.19	0.27
Rainwater	20	17.21	86.06	1.52
	40	38.65	96.63	0.97
	60	57.68	96.13	1.24
River water	20	16.50	82.52	1.20
	40	38.51	96.29	1.77
	60	70.63	117.73	1.18

^aThe mean of three measurements.