Multi-segment Reaction Cell Ion Trapping
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current systems for mass spectrometry face challenges in efficiently loading and reacting precursor and reagent ions in multi-segmented reaction cells, which affects the degree of fragmentation and analysis accuracy.
Innovation Solution
A method and system for analyzing samples by trapping and mixing ion packets in a multi-segment reaction cell, where at least one segment contains precursor ions and another segment contains reagent ions, allowing for controlled ion reactions to form product ions, which are then directed to a mass analyzer for analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If multiple ion packets are loaded into a single reaction cell segment, then the loading capacity is improved, but the reaction control and fragmentation precision deteriorate
Solution Approach 1:
The reaction cell is divided into multiple segments, with each segment capable of independently trapping ion packets. This segmentation allows multiple ion packets to be loaded simultaneously while maintaining separate control over each packet, thus resolving the contradiction between increased loading capacity and maintained reaction control/precision.
2Reliability
If ion packets are trapped in separate segments, then the reaction control is improved, but the device complexity increases
Solution Approach 1:
Each segment of the reaction cell is designed to perform multiple functions: trapping ion packets, isolating them for controlled reactions, and facilitating their mixing. This multi-functionality reduces the need for additional specialized components, thereby limiting the increase in device complexity while maintaining improved reaction control.
3Manufacturing precision
If the reaction time is extended to improve fragmentation degree, then the fragmentation is improved, but the loss of time for analysis increases
Solution Approach 1:
The system uses periodic mixing of ion packets within segments, allowing reactions to proceed in controlled intervals. This periodic action enables sufficient fragmentation to occur during designated reaction periods while maintaining overall analysis efficiency by systematically managing when reactions occur and when analysis occurs.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enhances the loading capacity and reaction efficiency of precursor and reagent ions, improving fragmentation and identification of sample components by optimizing ion interactions and reaction conditions within the segmented reaction cell.
Implementation Method 1
Gas-phase ion/ion reactions has proven to be a flexible means for probing and manipulating analyte ions
Implementation Method 2
ETD induces fragmentation of a precursor cation by transferring electrons from a reactant
Implementation Method 3
nETD induces fragmentation by transferring electrons from a precursor anion to a radical cation reactant
Implementation Method 4
the kinetics depend on the concentrations of the cations and anions. Furthermore, the degree of fragmentation depends on the relative abundance of the cations and anions as well as the length of time spent within the reaction vessel
Data Source
AI summary
A method for analyzing a sample includes trapping a first ion packet in a first segment of a multi-segment reaction cell; trapping a second ion packet in a second segment of the multi-segment reaction cell; and trapping a third ion packet in a third segment of the multi-segment reaction cell. At least one of the first, second, and third ion packets includes precursor ions, and at least another one of the first, second, and third ion packets includes reagent ions. The method further includes mixing the first, second, and third ion packets within the reaction cell to cause a reaction between the precursor ions and the reagent ions to form product ions.