Interchangeable Chromatography Column Segments for Selective Separation
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Solution Overview
Problem
Chromatographic separation methods, particularly gradient elution, face challenges such as prolonged cycle times, solvent consumption, limited detector compatibility, ecological disadvantages, and the need for specialized equipment and expertise to achieve optimal separation selectivity, which are not efficiently addressed by existing technologies.
Innovation Solution
A set of interchangeable column segments with different stationary phases that can be mechanically coupled to form a customized separation device, allowing for optimization of selectivity and resolution through calculation based on retention factors and the prism model, eliminating the need for continuously varying mobile phases and specialized column manufacturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If gradient elution is used to separate substances of different polarities, then separation selectivity is improved, but cycle time and solvent consumption increase significantly
Solution Approach 1:
The chromatographic column is divided into multiple interchangeable segments, each containing a different stationary phase. This segmentation allows the system to switch between different separation mechanisms (normal-phase, reversed-phase, ion-exchange) without requiring gradient elution, thereby reducing cycle time while maintaining separation selectivity.
Solution Approach 2:
The system dynamically reconfigures the column by exchanging segments based on the polarity and separation requirements of the analytes. This dynamic adaptation eliminates the need for continuous mobile phase composition changes, reducing both cycle time and solvent consumption while preserving separation effectiveness.
2Adaptability or versatility
If gradient elution is used to achieve wide polarity separation, then separation capability is improved, but detector compatibility deteriorates
Solution Approach 1:
Different column segments provide different separation mechanisms (normal-phase, reversed-phase, ion-exchange), enabling wide polarity separation without gradient elution. This maintains mobile phase composition stability, ensuring compatibility with various detectors including refractive index, UV/VIS, and mass spectrometry.
Solution Approach 2:
The modular segment system provides universal separation capability across different polarity ranges by physically exchanging segments rather than chemically modifying the mobile phase. This multi-functional approach maintains detector compatibility while achieving broad separation versatility.
3Manufacturing precision
If gradient elution is used for separation, then separation effectiveness is improved, but equipment complexity and cost increase
Solution Approach 1:
The column is segmented into interchangeable modules, each optimized for different separation mechanisms. This physical segmentation replaces the need for complex gradient elution equipment (multiple pumps, gradient mixers, control software), simplifying the overall system while maintaining separation effectiveness.
Solution Approach 2:
Instead of varying the mobile phase composition to achieve different separation mechanisms, the invention inverts the approach by varying the stationary phase through segment exchange. This inversion eliminates the need for gradient elution equipment while achieving the same separation objectives.
4Manufacturing precision
If gradient elution is used to separate diverse samples, then separation quality is improved, but solvent consumption and disposal costs increase
Solution Approach 1:
The system dynamically selects appropriate column segments based on analyte polarity, enabling effective separation with isocratic elution. This eliminates the need for extensive backwashing required by gradient elution, reducing solvent consumption by up to 90% and minimizing disposal costs.
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 quick, efficient, and environmentally friendly chromatographic separations with optimal selectivity and detectability, reducing cycle times, solvent usage, and equipment costs, while allowing for broader detector compatibility and simplified column construction.
Implementation Method 1
Chromatography is a physicochemical method of separation, in which the substances to be separated are distributed between two phases, one of which, the stationary phase, is fixed
Data Source
AI summary
The invention relates to elements for separating substances by distributing between a stationary and a mobile phase. Said separating elements comprise any stationary phase and a support element. The separating elements are part of a set that is provided with at least two separating elements Ti (i=2) encompassing different stationary phases Si (i=2). The set comprises at least three pieces of each type of separating element Ti with a specific stationary phase Si. The separating elements can be coupled to each other or interconnected in another manner so as to form a separating device. The invention further relates to a method for producing an optimized device for separating substance mixtures.