数字农科院2.0

Cadmium Telluride Quantum Dots as Matrix for MALDI-TOF-MS Analysis of Perfluorinated Compounds

文献类型： 外文期刊

作者： Yang Meng-Rui;Wang Min;Zhou Jian;Tang Xiao-Yan;Mao Xue-Fei;Wang Tong-Tong

作者机构：

关键词： Cadmium telluride quantum dots;Matrix assisted laser desorption ionization time-of-flight mass spectrometry;Perfluorinated compounds

期刊名称： CHINESE JOURNAL OF ANALYTICAL CHEMISTRY

ISSN： 0253-3820

年卷期： 2016 年 44 卷 2 期

页码：

收录情况： SCI

摘要： Cadmium telluride quantum dots (CdTe QDs) as a novel inorganic matrix were applied in matrix assisted laser desorption ionization time. of. flight mass spectrometric (MALDI-TOF-MS) analysis of perfluorinated compounds including perfluorooctane sulfonate (PFOS), perfluorodecane sulfonate (PFDS), perfluorohexane sulfonate (PFHxS) and perfluoroheptane sulfonate (PFHpS), and its performance was investigated and compared with conventional organic matrix involving. alpha-cyano-4-hydroxycinnamic acid (CHCA) and 1,8-bis(dimethylamino) naphthalene (DMAN) under the same mass spectrometric conditions. In the experiment, the analytes and matrix were mixed on the sample plate. The crystal of analyte and matrix was excited by using 337-nm laser after the solvent was evaporated, and was detected under negative ion mode of MALDI-TOF-MS. The results demonstrated that CdTe QDs with high UV absorption could be an efficient inorganic matrix for enhancement of peak intensity in MALDI-TOF-MS analysis of perfluorinated compounds. Additionally, mechanism of ionization process was briefly discussed.

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