Integrated Sample Extraction and Online Solvent Evaporation
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Solution Overview
Problem
Existing solvent extraction methods suffer from analyte loss and inefficient concentration processes, particularly when dealing with volatile analytes, leading to reduced recovery rates and prolonged processing times.
Innovation Solution
A gas preparation system integrating an extraction module and an evaporation module, allowing simultaneous or sequential operation of solvent evaporation and extraction, using a gas-liquid mixture to enhance mass transfer and maintain stable pressure conditions for efficient analyte recovery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the liquid solvent is transferred manually or by automated device to a solvent evaporation apparatus, then the concentration efficiency can be improved, but the analyte loss increases and the process time is prolonged
Solution Approach 1:
The patent combines the extraction module and evaporation module into a single integrated system where the liquid solvent flows directly from the extraction module to the evaporation module without manual transfer. This merging eliminates the transfer step that causes analyte loss while maintaining concentration efficiency, directly resolving the contradiction between productivity improvement and substance loss prevention
2Productivity
If the liquid solvent is heated to increase solubility and speed up extraction, then the extraction efficiency is improved, but the analyte may decompose or react with other chemicals in the solid sample
Solution Approach 1:
The patent uses gas pressure rather than temperature elevation to enhance extraction efficiency. By applying pressurized gas to the liquid solvent, the system achieves improved mass transfer and extraction rate without heating the analyte, thus maintaining analyte stability while improving productivity
3Productivity
If gas is combined with liquid solvent to form a mixture before flowing into the sample cell, then the mass transfer property is significantly improved, but the system complexity increases
Solution Approach 1:
The patent integrates the gas supply system and liquid solvent delivery system into a unified extraction module where gas and liquid solvent are combined and delivered together to the sample cell. This merging approach improves mass transfer rate through gas-assisted extraction while avoiding the complexity of separate, coordinated systems by consolidating them into one integrated module
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 integrated system improves extraction recovery rates and processing speed by minimizing analyte loss and transfer-related contamination, while optimizing system efficiency and flexibility.
Implementation Method 1
the gas phase in the mixture can diffuses faster than the liquid solvent phase by orders of magnitude
Implementation Method 2
an analyte can be dissolved in a liquid solvent by treating a solid sample by the liquid solvent
Implementation Method 3
the evaporation module comprises an evaporation container for evaporating liquid solvent containing the analyte
Data Source
AI summary
Methods for extracting an analyte from a sample through a gas preparation system comprise supplying gas and liquid solvent which solvent can dissolving the analyte in the sample to the sample cell; receiving the liquid solvent containing the analyte from the extraction module to the evaporation container; evaporating the liquid solvent containing the analyte in the evaporation container, wherein the evaporation module is in fluid communication with the sample cell; and starting to perform the evaporating step is allowed after at least a part of the liquid solvent containing the analyte from the extraction module enters the evaporation container. The method integrates extraction and evaporation together to allow “evaporation/concentration online”, thereby avoiding the transfer process of the analyte, saving labor, increasing processing speed, and avoiding the risk of contamination. A gas preparation system for extracting an analyte from a sample is also provided.