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Magnetic nanoparticle modified chitosan for surface enhanced laser desorption/ionization mass spectrometry of surfactants

机译:磁性纳米粒子修饰的壳聚糖用于表面活性剂的表面增强激光解吸/电离质谱

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Chitosan (CTS) modified magnetic nanoparticles (CTS@Fe3O4 MNPs) offer dual functions for the detection of surfactants using surface enhanced laser desorption/ionization mass spectrometry (SELDI-MS). The characterization of CTS@Fe3O4 MNPs is carried out using X-ray diffraction, Fourier transform infrared spectroscopy, transmission electron microscopy, and UV-vis absorption. CTS@Fe3O4 magnetic nanoparticles offer a simple separation method for surfactants. CTS@Fe3O4 MNPs show an absorption band at 337 nm that matches the laser wavelength of the N2 laser. The material provides dual functionalities; as a probe and for surface enhanced LDI-MS. Analysis of surfactants using CTS@Fe3O4 MNPs shows a remarkable limit of detection, offers high throughput analysis and fast separation (<5 min). Compared to a conventional organic matrix (2,5-DHB), the spectra obtained using CTS@Fe3O4 MNPs are interference-free. The interactions of the surfactants and CTS@Fe3O4 MNPs are also investigated using FTIR and UV-vis absorption.
机译:壳聚糖(CTS)修饰的磁性纳米颗粒(CTS @ Fe 3 O 4 MNPs提供双重检测功能使用表面增强的激光解吸/电离质谱(SELDI-MS)分析表面活性剂。 CTS @ Fe 3 O 4 MNPs的表征是使用X射线衍射,傅立叶变换红外进行的光谱学,透射电子显微镜和紫外可见吸收。 CTS @ Fe 3 O 4 磁性纳米粒子提供了一种简单的表面活性剂分离方法。 CTS @ Fe 3 O 4 MNPs在337 nm处具有与N的激光波长匹配的吸收带 2 激光器。该材料具有双重功能。作为探针和用于表面增强的LDI-MS。使用CTS @ Fe 3 O 4 MNPs对表面活性剂进行分析显示出显着的检测极限,可提供高通量分析快速分离(<5分钟)。与常规有机基质(2,5-DHB)相比,使用CTS @ Fe 3 O 4 获得的光谱小> MNP无干扰。还使用FTIR和UV-vis研究了表面活性剂与CTS @ Fe 3 O 4 MNP的相互作用。吸收。

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