alexa Ultrasensitive, rapid, and selective detection of mercury using graphene assisted laser desorption ionization mass spectrometry.
Bioinformatics & Systems Biology

Bioinformatics & Systems Biology

Journal of Data Mining in Genomics & Proteomics

Author(s): Abdelhamid HN, Wu HF, Abdelhamid HN, Wu HF, Abdelhamid HN, Wu HF, Abdelhamid HN, Wu HF

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Abstract We report an extremely sensitive and specific detection of mercuric ions (Hg²⁺) based on graphene assisted laser desorption/ionization mass spectrometry (GALDI-MS). Combining the highly selective coordination interactions between thymine (T) and Hg²⁺, we present a simple, effective, and novel approach, based on π-π interactions of the T-Hg²⁺-T complex and G that can serve as a platform and matrix for GALDI-MS. The present sensor not only exhibits high selectivity and sensitivity (picomolar) to Hg²⁺ in aqueous solution, but also can elucidate the chemical structures of the metal complexes. The significant advantage in the current approach is that there is no need for a sophisticated instrument, and no sample pretreatment is required to detect the Hg²⁺ ions. This article was published in J Am Soc Mass Spectrom and referenced in Journal of Data Mining in Genomics & Proteomics

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