Development of Cellulosic Paper-Based Test Strips for Mercury(II) Determination in Aqueous Solution

Table 1

Determination of Hg(II) concentration in a spiked tap water sample based on the test strip method.

Sample ID	Test strip method		Reference method
	[Hg^2+] (μg/mL)	Standard deviation (μg/mL)	[Hg^2+] (μg/mL)	Standard deviation (μg/mL)
1	2.9	0.05	3.1	0.05
2	6.2	0.21	6.0	0.18
3	9.1	0.25	8.8	0.30
4	13.5	0.19	13.7	0.32

Average value ().