Multi-Mode Anti-Matrix Extraction Column With Pressure-Variable Filtration
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Solution Overview
Problem
Chromatographic columns, particularly extraction columns, face issues such as blockage due to impurities, especially proteins, leading to reduced service life, difficulty in handling large volume injections, and poor column efficiency, especially with complex samples.
Innovation Solution
A multi-mode anti-matrix extraction column with a pressure-variable pore structure, non-equal diameter design, and segmented filler layers, including an elastic soft board, polymer filter membrane, and polymer impermeable membrane, to manage fluid flow and impurities effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional extraction column with a sieve plate is used for sample pretreatment, then the column can perform primary separation and purification, but impurities and proteins accumulate at the inlet end causing high pressure and blockage, seriously affecting service life
Solution Approach 1:
The extraction column is divided into multiple sections with different inner diameters (large inner diameter section at inlet, small inner diameter section at outlet), and the filler is segmented into different types in different sections. This segmentation allows the inlet section to handle large injection volumes while the outlet section maintains separation efficiency, preventing blockage accumulation.
Solution Approach 2:
Different sections of the column have different local properties: the inlet section has larger inner diameter and specific filler for handling high flow and capturing impurities, while the outlet section has smaller inner diameter and different filler for efficient separation. This local quality differentiation optimizes each section's function to prevent overall blockage.
2Quantity of substance
If large volume injection is performed to enrich and purify target substances in complex samples, then the extraction column must withstand larger injection volumes (100 microliters or more), but this makes the column more prone to blockage and reduces service life
Solution Approach 1:
The column is segmented into a large inner diameter section for receiving large volume injections and a small inner diameter section for efficient separation. This allows the system to handle large quantities of sample without compromising service life, as the blockage-prone inlet section is designed with larger diameter to accommodate high flow.
3Quantity of substance
If the inner radius of the column head is reduced to handle smaller volumes, then the column pressure rises more easily affecting service life, but larger radius is needed to handle large volume injections
Solution Approach 1:
The column head and body are segmented into different radius sections. The inlet section has larger radius to accommodate large volume injections without excessive pressure, while the outlet section has smaller radius for efficient separation. This segmentation resolves the contradiction between handling large volumes and maintaining acceptable pressure levels.
4Speed
If conventional equal diameter extraction columns are used, then the linear velocities of mobile phases remain the same throughout, but this results in poor focusing ability for drugs not easy to focus and non-linear peak area increase with injection volume
Solution Approach 1:
The column is segmented into sections with different inner diameters, which naturally creates different linear velocities in different sections. The larger inlet section provides lower velocity for better focusing of large volume injections, while the smaller outlet section provides higher velocity for efficient separation, achieving both focusing ability and separation efficiency.
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 solution enhances column efficiency, extends service life, and improves separation and enrichment capabilities for complex samples, even with large volume injections, by maintaining uniform fluid flow and effective impurity removal.
Implementation Method 1
a pressure-variable pore structure is provided on an upper end of the front end column cap, and includes an elastic soft board, a polymer filter membrane and a supporting pore plate in sequence from top to bottom
Implementation Method 2
a polymer filter membrane and a supporting pore plate in sequence from top to bottom
Implementation Method 3
A multi-mode anti-matrix extraction column with a pressure-variable pore structure, non-equal diameter design, and segmented filler layers, including an elastic soft board, polymer filter membrane, and polymer impermeable membrane
Implementation Method 4
the field of liquid chromatography columns, in particular to a multi-mode anti-matrix extraction column
Data Source
AI summary
Provided is a multi-mode anti-matrix extraction column. With the inflow end of a mobile phase serving as an upper end, the extraction column includes a column head, a front end column cap, a column tube, a tail end column cap and a column head which are sequentially connected from top to bottom, wherein the column tube is internally filled with a stationary phase, an inner cavity of the column tube is cylindrical, the column tube is divided into an upper section and a lower section, and the inner diameter of the upper section is larger than that of the lower section; and a pressure-variable pore structure is provided on an upper end of the front end column cap, and includes upper, middle and lower layers, i.e., an elastic soft board, a polymer filter membrane and a supporting pore plate in sequence from top to bottom.