Rapid Determination of Mercury Ions in Environmental Water Based on an N-Rich Covalent Organic Framework Potential Sensor

Table 3

Recovery of the proposed GPE/COF_TFPB-TZT electrode for the determination of Mercury ions in real water samples compared with the spectrophotometric method utilizing dithizone.

Sample	Spiked	Spectrophotometric method with dithizone		GPE/DTT electrode		Recovery (%)
		(μmol/L)	SD	(μmol/L)	SD
River water	0.500	0.502	±0.016	0.407	±0.015	101.8
River water	0.600	0.610	±0.013	0.491	±0.019	98.6
DI water	0.700	0.694	±0.014	0.604	±0.014	100.7
DI water	0.800	0.794	±0.013	0.797	±0.022	99.6
Pollution water	1.100	1.110	±0.015	1.106	±0.014	100.5
Pollution water	1.600	1.598	±0.011	1.596	±0.016	99.9