Chemical Analysis Device Using Membrane Segmentation for Rapid Hazardous Gas Detection
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Solution Overview
Problem
Conventional chemical analysis devices are not deployable in the field for rapid assessment of hazardous chemicals, require lengthy analysis times, and struggle to differentiate between molecules with similar profiles under mass spectroscopy, leading to potential false positives.
Innovation Solution
A device and method utilizing multiple membranes with different response times to separate and detect chemical constituents, paired with a mass spectrometer for rapid identification of hazardous gases or volatile organic compounds, allowing for rapid detection down to parts per billion or trillion concentrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional mass spectroscopy is used for chemical analysis, then molecular identification can be performed, but different molecules with the same profile cannot be differentiated leading to false positives
Solution Approach 1:
The patent segments the analysis process by introducing multiple membranes with different response times between the sample introduction and mass spectrometer detection. This temporal segmentation allows molecules that would otherwise produce identical mass spectra to be separated in time, enabling reliable differentiation and eliminating false positives while maintaining identification accuracy.
Solution Approach 2:
The patent introduces membranes as intermediary elements between the sample and the mass spectrometer. These membranes act as mediators that selectively delay different chemical constituents based on their interaction characteristics, providing additional separation information without interfering with the subsequent mass spectral analysis.
2Reliability
If conventional chemical analysis devices are used, then analysis can be performed, but the devices require fixed installations and are not deployable in the field for rapid assessment
Solution Approach 1:
The patent segments the conventional fixed installation system into portable modular components including the mass spectrometer, membrane assembly, pump, and housing. This segmentation enables the entire analytical system to be packaged as a field-deployable portable device while maintaining full analytical capability for rapid on-site chemical assessment.
Solution Approach 2:
The patent transforms the static fixed installation into a dynamic portable system with movable components. The portable housing, battery-powered pump, and handheld design enable the device to be dynamically deployed to various field locations for rapid chemical assessment rather than being confined to fixed laboratory installations.
3Measurement precision
If conventional monolithic analysis process is used, then complete analysis can be performed, but the analysis takes quite some time and cannot be conducted rapidly
Solution Approach 1:
The patent segments the monolithic analysis process into distinct temporal phases using multiple membranes with different response times. This segmentation creates a time-resolved analysis where different molecular constituents are separated and detected at different times, enabling rapid identification of key analytes without sacrificing analytical completeness.
Solution Approach 2:
The patent applies preliminary separation action through the membrane array before the main detection phase. By pre-separating molecular constituents based on their differential interaction with the membranes, the system prepares the sample in advance for rapid detection, reducing the overall analysis time while maintaining complete analytical coverage.
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 rapid, accurate detection of hazardous chemicals by time-separated membrane interaction, reducing false positives and enhancing detection speed and accuracy in field-deployable chemical analysis systems.
Implementation Method 1
The pump is connected to the housing to form a partial vacuum in the interior chamber
Implementation Method 2
The multiple membranes have different response times to different constituents of the sample
Implementation Method 3
The detector includes a mass spectrometer
Implementation Method 4
The at least one heating element is configured to heat the at least one of the multiple membranes to facilitate different response times of the different constituents
Data Source
AI summary
Methods and systems for chemical analysis. For instance, a device for chemical analysis of a sample includes a housing, an inlet, a pump, multiple membranes and at least one detector. The housing contains an interior chamber of the device. The inlet on the housing introduces the sample into the interior chamber. The pump is connected to the housing to form a partial vacuum in the interior chamber. The multiple membranes have different response times to different constituents of the sample. The multiple membranes include at least a first membrane and a second membrane. The multiple membranes have different response times to different constituents of the sample. The detector is for detecting the different constituents of the sample after interaction with the multiple membranes. In addition, a method for chemical analysis of a sample. A first step includes introducing a sample to multiple membranes having different response times to different constituents of the sample. A second step includes separating the different constituents of the sample due to the different response times of the multiple membranes. A third step includes detecting the different constituents of the gas after separating with the multiple membranes.