Plastic Reference Material Mass-Based Characterization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for manufacturing plastic reference materials face complications due to large measurement errors associated with volume measurement, which affect the accuracy of characterization results in analyzing chemical substances within plastic samples.
Innovation Solution
A method involving mass measurement using a balance to calculate the concentration of chemical substances in a plastic reference material, combined with pyrolysis GC-MS, eliminates the need for volume measurement, ensuring accurate and reliable characterization by dissolving the weighed materials in a solvent and introducing the resulting product into a pyrolysis GC-MS instrument.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If volume measurement using volumetric ware is used to prepare reference material solutions, then the manufacturing process can be completed, but large measurement errors occur and characterization accuracy deteriorates
Solution Approach 1:
The patent replaces the mechanical volume measurement system (volumetric ware) with a mass measurement system (balance). By weighing the solvent and calculating its volume from density, the method eliminates the large measurement errors inherent in volumetric ware while maintaining ease of manufacture. This substitution of measurement methodology directly resolves the contradiction between manufacturing feasibility and characterization accuracy.
2Reliability
If volume measurement values are used in subsequent calculation procedures, then the reference material can be characterized, but the error of the characterization result becomes large
Solution Approach 1:
The patent introduces density as an intermediary parameter between mass and volume. Instead of directly measuring volume with error-prone volumetric ware, the method measures mass accurately with a balance, then uses the known density of the solvent to calculate volume. This intermediary approach maintains the ability to perform characterization calculations while eliminating the large errors associated with direct volume measurement.
Solution Approach 2:
The patent substitutes the volume measurement pathway with a mass measurement pathway throughout the entire characterization process. By consistently using mass measurements (weighing candidate material, weighing isotope-labeled substance, weighing solvent) and calculating volumes from density, the method eliminates propagation of volume measurement errors through subsequent calculations, thereby improving characterization result accuracy.
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
This approach simplifies the manufacturing process and significantly reduces characterization errors, providing a highly reliable method for determining chemical substance concentrations in plastic reference materials.
Implementation Method 1
a solid sample is heated, whereby components contained in the sample are evaporated
Implementation Method 2
preparing a mixed solution by dissolving the weighed candidate material for the plastic reference material and the weighed isotope-labeled chemical substance in a solvent
Data Source
AI summary
The present invention relates to a plastic reference material and a method of manufacturing the same, wherein the concentration of at least one chemical substance is characterized from a signal intensity of the chemical substance and a signal intensity of the isotope-labeled chemical substance of the chemical substance obtained using the pyrolysis GC-MS instrument by weighing a mass of a candidate material for the plastic reference material using a balance, weighing an isotope-labeled chemical substance of the chemical substance using a balance, preparing a mixed solution by dissolving the weighed candidate material for the plastic reference material and the weighed isotope-labeled chemical substance in a solvent, introducing a product resulting from evaporation of the solvent from the mixed solution into a pyrolysis GC-MS instrument, and calculating the concentration of the chemical substance included in the candidate material for the plastic reference material.