The detection of mercury ion using DNA as sensors based on fluorescence resonance energy transfer
2019
Abstract Mercury ion (Hg 2+ ) is a heavy metal that can cause serious water pollution. With the accumulation of large quantities in lakes, rivers, freshwater and aquatic life, Hg 2+ can pass through the food chain, entering the human body and endangering health. Hg 2+ detection has therefore become important thereby attracting extensive interests. Currently, several DNA-based sensors have been used for Hg 2+ detection because they are not easy to degrade and are very stable. This paper summarizes the application of some DNA-based sensors based on fluorescence resonance energy transfer (FRET), analyzes their characteristic, and compares their sensitivity. Future perspectives and possible challenges in this area are also outlined.
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