Fig. 4 | Scientific Reports

Fig. 4

From: Novel optical optode for selective detection and removal of ultra-trace level of mercury ions in different environmental real samples

Fig. 4

The absorbance signal of mercury ions in the presence of other interfering species (A), chemical analysis of optodes using histograms (B) and effect of different interfering ions on adsorption of mercury ions and recovery of mercury ions in the presence of different interfering ions (C). The sensing and adsorption of mercury ions was elaborated in the presence of Cd2+and Zn2+while there was 1 mL of 0.05 mol L− 1Na2S2O3, and 25 mL of 20% potassium cyanide solution.

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