Dual Ion Mobility Spectrometer System for Multicomponent Separation
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Solution Overview
Problem
Existing ion mobility spectrometer systems have limited separation capacity and cannot effectively detect multicomponent compositions or substances with opposite electroaffinities, particularly when used in combination with gas chromatographs.
Innovation Solution
An ion mobility spectrometer system comprising a gas chromatograph and two ion mobility spectrometers, with a sample feed device that includes multiple passages and outlets for simultaneous input and separation of samples into both spectrometers, allowing for improved resolving power and detection of both positive and negative ions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single ion mobility spectrometer is used, then the device complexity is reduced, but the separation capacity and ability to detect multicomponent compositions deteriorates
Solution Approach 1:
The system divides the detection function into two separate ion mobility spectrometers, each optimized for specific detection needs. The first spectrometer detects ions with one polarity while the second detects ions with opposite polarity, allowing each device to be simpler while collectively achieving superior separation capacity for multicomponent compositions
2Device complexity
If a single-mode ion mobility spectrometer is used, then the device complexity is reduced, but the ability to detect substances with opposite electroaffinities deteriorates
Solution Approach 1:
The system makes the overall detection system universal by employing two ion mobility spectrometers that can detect both positive and negative ions. This multi-functional configuration allows the system to handle a broader range of substances including those with opposite electroaffinities, while each individual spectrometer remains relatively simple in design
3Device complexity
If a conventional ion mobility spectrometer is used, then the device complexity is reduced, but the resolving power and molecule information relevance deteriorates
Solution Approach 1:
The system adds another dimension to the detection capability by implementing dual spectrometers with different detection modes. This dimensional expansion in detection space enhances resolving power and provides more comprehensive molecule information without requiring excessive complexity in each individual spectrometer unit
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
Enhances molecule identification accuracy by improving resolving power and enabling the detection of both positive and negative ions, thereby overcoming the limitations of single-mode systems in separating complex substances.
Implementation Method 1
a gas chromatograph configured to separate compounds and output a sample
Implementation Method 2
each configured to identify ionized molecules... can separate ions by an electric field
Data Source
AI summary
An ion mobility spectrometer system is disclosed. In one aspect, the system includes a gas chromatograph, first and second ion mobility spectrometers, and a sample feed device that feeds a sample from the gas chromatograph to the first and second ion mobility spectrometers. The sample feed device includes an inner chamber, first and second sample outlets for outputting the sample from the gas chromatograph to the first and second ion mobility spectrometers, respectively, and a gas inlet for inputting a gas into the sample feed device. The system detects and identifies molecules at improved resolution and enhanced molecule information. The system detects positive and negative ions, interrelates positive-mode and negative-mode spectrums, and separates substances.