Abstract
We developed a colorimetric method for the rapid detection of copper ions (Cu2+) in aqueous solution. The detection of Cu2+ is based on coordination reactions of Cu2+ with casein peptide-functionalized silver nanoparticles (AgNPs), leading to a distinct color change of the solution from yellow to red. The developed method has a good detection limit of about 0.16 μM Cu2+ using 0.05 mL of AgNPs stock solution and a linearity in the range of 0.08-1.44 μM Cu2+ with a correlation coefficient of R2 = 0.973. The developed method is a useful tool for the detection of Cu2+ ions. Furthermore, it can be used for monitoring Cu2+ in water at concentrations below the safe limit for drinking water set by the World Health Organization.
| Original language | English |
|---|---|
| Pages (from-to) | 1414-1422 |
| Number of pages | 9 |
| Journal | Beilstein Journal of Nanotechnology |
| Volume | 9 |
| Issue number | 1 |
| DOIs | |
| State | Published - 2018 |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 6 Clean Water and Sanitation
Keywords
- Absorbance
- Dispersion
- Drinking water
- Rapid detection
- UV spectroscopy
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