Authors
Ahmed M Hamid, Sandilya VB Garimella, Yehia M Ibrahim, Liulin Deng, Xueyun Zheng, Ian K Webb, Gordon A Anderson, Spencer A Prost, Randolph V Norheim, Aleksey V Tolmachev, Erin S Baker, Richard D Smith
Publication date
2016/9/20
Journal
Analytical chemistry
Volume
88
Issue
18
Pages
8949-8956
Publisher
American Chemical Society
Description
We report on ion mobility (IM) separations achievable using traveling waves (TW) in a Structures for Lossless Ion Manipulations (SLIM) module having a 44 cm path length and 16 90° turns. The performance of the TW-SLIM module was evaluated for ion transmission and IM separations with different RF, TW parameters, and SLIM surface gaps in conjunction with mass spectrometry. In this work, TWs were created by the transient and dynamic application of DC potentials. The module demonstrated highly robust performance and, even with 16 closely spaced turns, achieving IM resolution performance and ion transmission comparable to a similar straight path module. We found an IM peak capacity of ∼31 and peak generation rate of 780 s−1 for TW speeds of ∼80 m/s using the current multi-turn TW-SLIM module. The separations achieved for isomers of peptides and tetrasaccharides were found to be comparable to …
Total citations
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