Fig. 4
From: Advances in aptamer screening and aptasensors’ detection of heavy metal ions
A The fluorescence intensity of the sensor at different As3+ concentrations. B The correlation between the logarithm of As3+ concentration and fluorescence intensity at 520Â nm wavelength. C The fluorescence intensity of the sensor is: (a)without As3+, (b)without Exo III, (c)without Mg2+, (d)10Â nM As3+, 2 unit/ÎĽL Exo III, and 100Â mM Mg2+. D Selectivity investigation of sensing platform for As3+ against other competing heavy metal ions [112]