Multi-ionization Mass Spectrometer for Gas Mixture Analysis
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Solution Overview
Problem
Conventional mass spectrometric methods for examining gas mixtures often suffer from fragmentation of molecules during ionization and analysis, limiting their suitability for unknown substances and requiring prior knowledge of the substance type, which can lead to delays and inefficiencies.
Innovation Solution
A method involving parallel or serial ionization using multiple ionization devices with different procedures, such as charge exchange and plasma ionization, to adapt to varying conditions and provide comprehensive chemical characterization of gas mixtures, including macromolecular substances, by combining the advantages of various ionization techniques.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single ionization unit is used, then the device complexity is reduced, but the adaptability to different substance types is limited
Solution Approach 1:
The mass spectrometer is equipped with multiple ionization units, each capable of performing different ionization procedures (e.g., electron impact ionization, chemical ionization, plasma ionization). This multi-functional design allows the same device to analyze various types of substances including gases, vapors, and macromolecular compounds without requiring separate specialized instruments, thereby resolving the contradiction between adaptability and device complexity.
2Measurement precision
If conventional ionization methods are used, then the analysis speed is improved, but molecule fragmentation occurs making chemical characterization difficult
Solution Approach 1:
The patent employs multiple ionization units that operate with different energy parameters and ionization mechanisms. By selecting appropriate ionization methods (such as lower energy chemical ionization or plasma ionization instead of high energy electron impact), the system can adjust ionization parameters to minimize molecular fragmentation while maintaining adequate ionization efficiency, thus improving chemical characterization accuracy without excessive fragmentation.
3Measurement precision
If prior knowledge of substance type is required, then the measurement precision is improved, but the loss of time for unknown substance analysis increases
Solution Approach 1:
The mass spectrometer performs preliminary comprehensive analysis using multiple ionization units to generate detailed spectral information about unknown substances. By simultaneously or sequentially acquiring data from different ionization methods, the system builds a comprehensive fingerprint of the substance before final identification, eliminating the need for operators to have prior knowledge of substance types while maintaining measurement precision through multi-parameter characterization.
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
Enables efficient and economical mass spectrometric examination of gas mixtures, allowing for the detection of both small and large particles, and providing insights into chemical composition and origin, while minimizing fragmentation and adapting to changing environmental conditions.
Implementation Method 1
ionizing of the gas mixture, in particular by charge exchange ionization, in a detector
Implementation Method 2
ions and/or metastable particles of an ionization gas, which are produced by an ionization device, in particular a plasma ionization device
Data Source
AI summary
A method includes parallel or serial ionization of a gas mixture by activating at least two ionization devices operating using different ionization procedures, and/or by ionizing the gas mixture in a detector to which the gas mixture and ions and/or metastable particles of an ionization gas are fed. The method also includes detecting the ionized gas mixture in the detector for the mass spectrometric examination thereof. A mass spectrometer for mass spectrometric examination of gas mixtures includes an ionization unit for ionizing a gas mixture and a detector for detecting the ionized gas mixture.