Determination of Thallium(I) by Hybrid Mesoporous Silica (SBA-15) Modified Electrode

Table 5

Recovery of Tl(I) ion by CPE8 from different water samples.

Sample	Added (M)	Recovery (%)
		CPE8	AAS
Tap water 1	0.0005	100.2	100.3
Tap water 2	0.0004	100.0	100.1
River water	0.0003	102.3	102.4
Hair sample	0.0003	101.4	101.5