• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of mass spectrometry: JMS >Desorption electrospray ionization - Orbitrap mass spectrometry of synthetic polymers and copolymers
【24h】

Desorption electrospray ionization - Orbitrap mass spectrometry of synthetic polymers and copolymers

机译：解吸电喷雾电离-合成聚合物和共聚物的Orbitrap质谱

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Desorption ElectroSpray Ionization (DESI) - Orbitrap Mass Spectrometry (MS) was evaluated as a new tool for the characterization of various industrial synthetic polymers (poly(ethylene glycol), poly(propylene glycol), poly(methylmethacrylate), poly(dimethylsiloxane)) and copolymers, with masses ranging from 500 g.mol ~(-1) up to more than 20 000 g.mol ~(-1). Satisfying results in terms of signal stability and sensitivity were obtained from hydrophobic surfaces (HTC Prosolia) with a mixture water/methanol (10/90) as spray solvent in the presence of sodium salt. Taking into account the formation of multiplied charged species by DESI-MS, a strategy based on the use of a deconvolution software followed by the automatic assignment of the ions was described allowing the rapid determination of M _n, M _w and PDI values. DESI-Orbitrap MS results were compared to those obtained from matrix-assisted laser desorption/ionization- time-of-flight MS and gel permeation chromatography. An application of DESI-Orbitrap MS for the detection and identification of polymers directly from cosmetics was described.
机译：解吸电喷雾电离（DESI）-Orbitrap质谱（MS）被评估为表征各种工业合成聚合物（聚（乙二醇），聚（丙二醇），聚（甲基丙烯酸甲酯），聚（二甲基硅氧烷））的新工具和共聚物，质量范围从500 g.mol〜（-1）到超过20000 g.mol〜（-1）。在钠盐存在下，以水/甲醇（10/90）为混合溶剂的疏水表面（HTC Prosolia）获得了信号稳定性和灵敏度方面令人满意的结果。考虑到通过DESI-MS形成带电荷的多物种，描述了一种基于使用去卷积软件然后自动分配离子的策略，可以快速确定M_n，M_w和PDI值。将DESI-Orbitrap MS结果与通过基质辅助激光解吸/电离飞行时间MS和凝胶渗透色谱法获得的结果进行比较。描述了DESI-Orbitrap MS在直接从化妆品中检测和鉴定聚合物的应用。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号