Solid Phase Extraction of Inorganic Mercury Using 5-Phenylazo-8-hydroxyquinoline and Determination by Cold Vapor Atomic Fluorescence Spectroscopy in Natural Water Samples

Table 10

Analytical results for the determination of Hg(II) in natural water samples by CV-AFS.

Water samples	Concentration µg L^−1		Recovery (%)
	Added	Found^a
Tap water	0	0,774 ± 0,034
	0,5	1,274 ± 0,082	100
	2	2,769 ± 0,066	99,8
River water	0	0,382 ± 0,069
	0,5	0,882 ± 0,085	100
	2	2,380 ± 0.055	99,9

aThe value following “±” is the standard deviation (𝑛=2).