Four-Channel Electrolytic Device for Ion Chromatography
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Solution Overview
Problem
Current ion chromatography systems face challenges in efficiently pretreating and suppressing liquid samples, particularly due to precipitation issues and the need for separate devices for sample pretreatment and suppression, which increases costs and complexity.
Innovation Solution
A four-channel electrolytic device with additional charged barriers and channels allows for simultaneous sample pretreatment and suppression, using electric currents to remove counterions and convert analytes to acid or base form, thereby preventing precipitation and integrating functions into a single device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate devices are used for sample pretreatment and suppression, then each device can be optimized for its specific function, but the system complexity and cost increase
Solution Approach 1:
The patent combines sample pretreatment and suppression functions into a single integrated device with multiple channels. The first channel performs sample pretreatment while the second channel performs suppression, both within the same device structure, eliminating the need for separate devices and reducing system complexity while maintaining functional optimization
Solution Approach 2:
The device is designed to perform multiple functions simultaneously - it can pretreat samples, suppress eluents, and analyze both anions and cations within a single integrated system. The multiple channels and electrodes enable the device to handle different sample types and perform various chromatographic functions without requiring separate specialized devices
2Device complexity
If traditional suppression methods are used, then the structure is simpler, but precipitation issues occur and column clogging happens
Solution Approach 1:
The device segments the suppression process into multiple channels with different functions. The first channel performs sample pretreatment to remove counterions, while the second channel performs suppression of the eluent. This segmentation allows each channel to be optimized for its specific function, preventing precipitation issues that occur in traditional single-channel systems while maintaining reasonable structural complexity
Solution Approach 2:
The device introduces an intermediary pretreatment step before suppression. The first channel acts as an intermediary that removes counterions from the sample before it enters the suppression channel, preventing precipitation and column clogging that would occur if suppression were applied directly to untreated samples
3Reliability
If multiple separate devices are used for anion and cation analysis, then each device can be optimized for specific ion analysis, but the cost and system complexity increase
Solution Approach 1:
The device is designed with universal functionality to analyze both anions and cations within a single system. The multiple channels and interchangeable electrode configurations allow the same device to be optimized for different ion types, eliminating the need for separate anion and cation analysis devices while maintaining analysis optimization
Solution Approach 2:
The device incorporates dynamic configurability where electrodes and channels can be configured for different analysis modes. The system can switch between anion analysis and cation analysis modes by reconfiguring the electrode polarities and channel flows, allowing one device to replace multiple specialized devices while maintaining optimized analysis performance
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 reduces costs, prevents column clogging, enhances analytical precision, and allows for effective analysis of both anions and cations without the need for separate devices, improving the overall efficiency and reliability of ion chromatography.
Implementation Method 1
said first channel being separated from said second channel by a first charged barrier having exchangeable ions capable of blocking bulk liquid flow; said second channel being separated from said third channel by a second charged barrier having exchangeable ions capable of blocking bulk liquid flow; said third channel being separated from said fourth channel by a third charged barrier having exchangeable ions capable of blocking bulk liquid flow; wherein said first, second and third charged barriers are each capable of passing ions of only one charge, positive or negative
Implementation Method 2
applying an electric current between said first and second electrodes of opposite charge across said first, second, third and fourth channels to cause ions of opposite charge to said separated sample analytes in said liquid sample and eluent to flow toward the one of said two electrodes of the opposite charge to first charged barrier exchangeable ions to remove at least some of said counterions
Implementation Method 3
applying an electric current between said first and second electrodes of opposite charge across said first, second, third and fourth channels to cause ions of opposite charge to said separated sample analytes in said liquid sample and eluent to flow toward the one of said two electrodes of the opposite charge
Data Source
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AI summary
An electrolytic device includes four channels separated by three charged barriers. The device can be used to suppress an eluent stream containing separated sample analyte ions and/or to pretreat a sample stream containing unseparated analyte ions.