Absorption Tube Solution Preparation for Automated Ion Chromatography
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Solution Overview
Problem
The existing methods for quantitative analysis using ion chromatography require time and effort to measure and control the volume of absorbing solutions, and the device structure is complicated due to the need for switching mechanisms between nozzles for calibration curve and absorbing solutions.
Innovation Solution
A method and device that prepare analyte and calibration curve solutions in the same absorption tube using a liquid level sensor and metering pump to automate the process, eliminating the need for precise volume measurement and simplifying the device structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the volume of absorbing solution is precisely measured and controlled manually, then the accuracy of quantitative analysis is improved, but the time and effort required increases significantly
Solution Approach 1:
The absorption tube is equipped with a liquid level sensor that automatically detects when the absorbing solution reaches the appropriate level. The system self-regulates the volume by stopping the filling process when the sensor detects the liquid level, eliminating the need for manual volume measurement and control while maintaining measurement accuracy.
2Adaptability or versatility
If separate nozzles are used for calibration curve solutions and absorbing solutions, then the flexibility and adaptability of the device is improved, but the device structure becomes complicated
Solution Approach 1:
A single nozzle is designed to perform multiple functions by alternating between introducing calibration curve solutions and absorbing solutions. The nozzle is paired with a liquid level sensor that automatically detects the solution type and controls the filling process accordingly, eliminating the need for separate nozzles and switching mechanisms while maintaining device flexibility.
3Manufacturing precision
If manual volume adjustment is performed to achieve fixed volume solutions, then the manufacturing precision of solution concentration is improved, but the ease of operation deteriorates
Solution Approach 1:
The liquid level sensor provides real-time feedback on the solution volume in the absorption tube. When the solution reaches the predetermined level, the sensor sends a signal to stop the filling process automatically. This feedback mechanism ensures precise solution concentration without requiring manual volume adjustment, significantly improving ease of operation while maintaining manufacturing precision.
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, precise, and automated quantitative analysis by preparing solutions in a fixed volume without manual volume adjustment, allowing for accurate concentration determination of unknown samples.
Implementation Method 1
an absorption tube containing an absorbing solution that absorbs the sample gas
Implementation Method 2
a sample heating device that thermally decomposes a sample to produce a sample gas
Data Source
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AI summary
To eliminate the time and effort required to measure and control the volumes of analyte solutions to be introduced into an analyzer in a quantitative analysis of a component with an unknown concentration contained in a sample using a calibration curve, thus enabling a highly precise quantitative analysis to be automatically performed. For a quantitative analysis of an unknown component contained in a sample using a calibration curve, the preparation of an analyte solution of a sample containing the unknown component by pouring an absorbing solution that absorbs a gas into an absorption tube and allowing the absorbing solution to absorb a sample gas produced by thermal decomposition of the sample, and the preparation of a calibration curve solution are performed in the same absorption tube. The analyte solution of the sample and the calibration curve solution are each adjusted to a fixed volume by pouring a diluent into the absorption tube and then introduced into the analyzer for analysis.