Flexible Polymer Reference Sheet for Pyrolysis GC-MS Calibration
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Solution Overview
Problem
Conventional reference samples, such as resin pellets or powders, require pretreatment and are prone to evaporation, making them unsuitable for direct analysis in pyrolysis gas chromatograph-mass spectrometry without compromising calibration precision.
Innovation Solution
A flexible sheet made of high polymer material with uniformly distributed target components, which can be cut, layered, or coated with evaporation-preventing film, allowing for direct analysis without pretreatment and preventing volatile components from evaporating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional reference samples (resin pellets or powders) are used for calibration, then the target component can be analyzed through gas chromatograph-mass spectrometry, but pretreatment is required and volatile components are prone to evaporation
Solution Approach 1:
The invention changes the physical state parameter of the reference sample from conventional pellets or powders to a thin film state. This parameter change enables the reference sample to be directly introduced into the gas chromatograph-mass spectrometer without pretreatment, while maintaining uniform distribution of the target component for precise calibration
Solution Approach 2:
The invention creates a composite structure where the target component is uniformly dispersed within a resin matrix in a thin film configuration. This composite approach combines the benefits of solid-phase stability with surface accessibility, eliminating the need for pretreatment while preventing evaporation of volatile components
2Quantity of substance
If resin pellets are used as reference samples, then the target component is contained uniformly, but microscopic amounts must be shaved off using a knife which is time-consuming
Solution Approach 1:
The thin film reference sample can be easily divided into smaller portions by cutting or tearing, allowing precise control of microscopic amounts to be introduced into the analyzer. This segmentation is much faster and easier than shaving resin pellets with a knife
Solution Approach 2:
Changing the physical form from bulky resin pellets to thin films dramatically reduces the time required to obtain microscopic amounts of sample. The thin film structure allows rapid preparation while maintaining uniform target component distribution for accurate quantitative analysis
3Measurement precision
If conventional reference samples are used, then calibration can be performed, but volatile target components evaporate from the surface
Solution Approach 1:
The invention changes the surface area to volume ratio parameter by creating a thin film structure where the target component is distributed throughout the film thickness rather than just on the surface. This parameter change reduces evaporation losses while maintaining calibration accuracy
Solution Approach 2:
The composite structure of target component uniformly distributed within the resin matrix in thin film form provides both stability and protection against evaporation. The resin matrix acts as a barrier that prevents volatile components from evaporating while allowing consistent analytical signals for accurate calibration
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 precise calibration of pyrolysis gas chromatograph-mass spectrometers by preventing evaporation of target components and allowing for easy collection and handling of the reference sample.
Implementation Method 1
a pyrolyzer is arranged in the front stage of an injection port for a sample gas to be subjected to the gas chromatograph so that a gas generated by heating the sample is directly led to the injection port of the gas chromatograph
Implementation Method 2
a separation column 13b is provided inside an oven 13a, where the separation column 13b communicates with the pyrolyzer 12 through one end so that a gas generated by heating a sample within the pyrolyzer 12 can be led into the separation column 13b
Implementation Method 3
the other end of the separation column 13b is directly connected to an injection port for a sample of the mass spectrometer 14 so that the gas that has passed through the separation column 13b can be led into the mass spectrometer 14, and thus, analysis is carried out in accordance with the gas chromatograph-mass spectrometry
Data Source
AI summary
A reference sample for analysis that is optimal for calibration of a pyrolysis gas chromatograph-mass spectrometer and with which precise calibration is always possible by preventing a reference substance from evaporating is provided. A reference sample sheet 1 is provided by distributing a target component or target components with a uniform normality in a base made of a high polymer material, and the reference sample sheet 1 is rolled up so that the target component or target components can be prevented from evaporating from the reference sample sheet 1 even in the case where a component has volatility. A reference sample for calibration of a pyrolysis gas chromatograph-mass spectrometer can be easily, quickly, and efficiently collected by punching out the reference sample sheet 1 using a micro-puncher 2.