Ultrasensitive, Rapid, and Selective Detection of Mercury Using Graphene Assisted Laser Desorption/Ionization Mass Spectrometry
We report an extremely sensitive and specific detection of mercuric ions (Hg 2+ ) based on graphene assisted laser desorption/ionization mass spectrometry (GALDI-MS). Combining the highly selective coordination interactions between thymine (T) and Hg 2+ , we present a simple, effective, and novel ap...
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Published in | Journal of the American Society for Mass Spectrometry Vol. 25; no. 5; pp. 861 - 868 |
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Main Authors | , |
Format | Journal Article |
Language | English |
Published |
Boston
Springer US
01.05.2014
Springer Nature B.V |
Subjects | |
Online Access | Get full text |
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Summary: | We report an extremely sensitive and specific detection of mercuric ions (Hg
2+
) based on graphene assisted laser desorption/ionization mass spectrometry (GALDI-MS). Combining the highly selective coordination interactions between thymine (T) and Hg
2+
, we present a simple, effective, and novel approach, based on π–π interactions of the T-Hg
2+
-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 Hg
2+
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 Hg
2+
ions.
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ISSN: | 1044-0305 1879-1123 |
DOI: | 10.1007/s13361-014-0825-z |