Negative Ion Laser Desorption/Ionization Time-of-Flight Mass Spectrometric Analysis of Small Molecules Using Graphitic Carbon Nitride Nanosheet Matrix
作者： Zian Lin , Jiangnan Zheng , Guo Lin , Zhi Tang , Xueqing Yang
DOI: 10.1021/ACS.ANALCHEM.5B02066
关键词:
摘要: Ultrathin graphitic carbon nitride (g-C3N4) nanosheets served as a novel matrix for the detection of small molecules by negative ion matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) was described first time. In comparison with conventional organic matrices and graphene matrix, use g-C3N4 nanosheet showed free background interference increased signal intensity in analysis amino acids, nucleobases, peptides, bisphenols (BPs), nitropolycyclic aromatic hydrocarbons (nitro-PAHs). A systematic positive modes revealed that spectra produced mode were featured singly deprotonated without interference, which rather different from complicated alkali metal complexes mode. Good salt tolerance reproducibility allowed determination 1-nitropyrene (1-NP) sewage, its corresponding detecti...
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