Multimethod Ionization Device for Trace Analyte Detection
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Solution Overview
Problem
Current ionization devices face challenges in reliably detecting trace-level concentrations of substances, such as illicit substances, due to high detection limits and lengthy analysis times, which complicates their use in atmospheric research and security applications.
Innovation Solution
A Multimethod Ionization Device (MID) that utilizes multiple ionization schemes simultaneously, allowing for rapid switching between them, and includes features like reagent introduction ports, flow laminarization, and ionization sources to enhance analyte adduct formation and detection efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional ionization methods are used, then the detection limit is reduced, but the detection time increases significantly
Solution Approach 1:
The ionization process is divided into two distinct stages: a first ionization method is applied initially, and then a second ionization method is applied subsequently. This segmentation allows each method to be optimized for its specific function, achieving both low detection limits and reduced analysis time compared to using a single prolonged ionization method.
Solution Approach 2:
The patent implements continuous ionization by sequentially applying multiple ionization methods without interrupting the analysis process. The first ionization method operates continuously initially, and the second ionization method is introduced to maintain and enhance ionization efficiency throughout the analysis, ensuring continuous useful action rather than intermittent processing.
2Reliability
If sampling time is increased to detect trace-level substances, then detection reliability improves, but analysis productivity decreases
Solution Approach 1:
The analytical process is segmented into phases with different ionization methods, where each phase is optimized for specific detection needs. This allows rapid initial screening followed by enhanced detection only when necessary, maintaining high reliability for trace-level substances while avoiding prolonged sampling for all analyses, thus preserving productivity.
Solution Approach 2:
The ionization system dynamically switches between different ionization methods based on the detection requirements. The system can adaptively apply the first ionization method for routine samples and activate the second ionization method when enhanced sensitivity is needed, making the process dynamic rather than static, thereby balancing reliability and productivity.
3Measurement precision
If multiple ionization schemes are used simultaneously, then analyte adduct formation is enhanced, but device complexity increases
Solution Approach 1:
Multiple ionization schemes are applied in a segmented, sequential manner rather than simultaneously. The first ionization method is applied initially, and the second ionization method is applied subsequently. This temporal segmentation allows the system to achieve enhanced analyte adduct formation through multiple ionization mechanisms while avoiding the complexity of simultaneously managing multiple ionization systems.
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
The MID device improves the visibility of analyte species, reduces detection time, and increases the sensitivity of mass analysis, enabling the detection of trace-level substances like explosives and narcotics, while maintaining the integrity of sample molecules.
Implementation Method 1
a ionization source, for ionizing said reagent species
Implementation Method 2
Chemical ionization (CI) is arranged to occur in a chemical ionization inlet unit as such as in general. CI is based on the analyte molecule reaction with the separately produced ionizing ion to form an adduct carrying a charge.
Data Source
AI summary
Disclosed are a multimethod ionization device (MID) to utilize at least chemical ionization and a system further utilizing such a device provided with a reaction chamber for ion formation of reagent species for adduct formation from at least one analyte to be characterized as based on mass to charge ratio for the analyte identification.