Photometric Ion Analysis Cell With Selective Chambers
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing ion-selective probes for determining ionic parameters in aqueous solutions suffer from cross-sensitivity, high environmental sensitivity, high cost, and maintenance-intensive recalibration, making them unsuitable for automated, large-scale water monitoring and inaccessible to certain users.
Innovation Solution
An analytical system with a measuring cell containing first and second electrodes, anion- and cation-selective membranes, and detection agents, which uses photometric measurement and pH adjustment through water electrolysis to determine anions and cations quantitatively and qualitatively, with a simple design for cost-effectiveness and reduced maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If ion-selective probes with ion-selective membranes are used to determine ionic parameters, then measurement capability is achieved, but cross-sensitivity to interfering ions occurs and measurement precision deteriorates
Solution Approach 1:
The measuring cell is divided into multiple independent measuring chambers (first measuring chamber, second measuring chamber, etc.), each containing specific detection agents for different ion types. This segmentation allows selective determination of different ions without cross-interference, as each chamber independently processes specific ion detection.
Solution Approach 2:
Detection agents are introduced as intermediaries between the ions to be measured and the measurement system. These detection agents specifically bind to target ions (e.g., anions or cations) and convert their presence into measurable signals, enabling selective ion determination while filtering out interfering ions that do not bind to the specific detection agent.
2Productivity
If ion-selective probes are used for automated monitoring, then continuous measurement capability is achieved, but high maintenance costs and recalibration requirements increase operational complexity
Solution Approach 1:
The system enables automated ion determination through a self-contained measuring cell that requires minimal external intervention. The detection agents within the measuring chambers automatically interact with ions in the liquid medium, and the evaluation unit automatically processes measurement data, reducing the need for manual recalibration and maintenance.
Solution Approach 2:
The measuring cell with its detection agents can be designed as a disposable or easily replaceable component. After use or when detection agents are depleted, the entire measuring cell can be discarded or replaced without requiring complex recalibration procedures, significantly reducing maintenance costs and operational complexity for automated monitoring applications.
3Measurement precision
If ion-selective membranes are used for ion selectivity, then ion determination capability is achieved, but high sensitivity to environmental influences increases measurement uncertainty
Solution Approach 1:
The system replaces the mechanical/physical ion-selective membrane approach with a chemical detection agent approach. Detection agents chemically bind to specific ions in solution, and this chemical interaction is less sensitive to environmental factors such as temperature and pressure compared to the physical properties of membranes. The photometric or electrochemical detection of the ion-detection agent complex provides stable measurements despite environmental variations.
4Measurement precision
If ion-selective probes are used for ion determination, then measurement functionality is achieved, but high cost reduces accessibility for certain users
Solution Approach 1:
The measuring cell with detection agents is designed as a cost-effective, potentially disposable component that eliminates the need for expensive ion-selective membranes and complex probe assemblies. The simple structure of the measuring cell with basic chambers and detection agents significantly reduces manufacturing costs while maintaining measurement functionality, making the system accessible to a broader range of users including private individuals and small-scale applications.
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 system provides accurate, cost-effective, and low-maintenance ion determination, resistant to interfering ions, suitable for automated monitoring of water bodies and other applications, including aquariums, with ease of use and adaptability to different conditions.
Implementation Method 1
an anion-selective membrane (7) arranged between the first measuring chamber (3) and the sample chamber (2), which is designed to allow the passage of anions (A) from the sample chamber (2) into the first measuring chamber (3)
Implementation Method 2
a cation-selective membrane (8) arranged between the second measuring chamber (4) and the sample chamber (2), which is designed to allow the passage of cations (K) from the sample chamber (2) into the second measuring chamber (4)
Implementation Method 3
This first liquid measuring chamber medium can contain a first detection agent (E-1) to form anion-detection agent associations (AE-1) when anions (A) pass into the first measuring chamber (3)
Implementation Method 4
The measuring arrangement is designed to photometrically measure the anions (A) and/or anion-recognition compound associations (AE-1) present in the first measuring chamber (3)
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
The present invention relates to an analysis system for the qualitative and/or quantitative determination of ions in an ion-containing liquid medium. The present invention also relates to an analysis process performed with said analysis system. With the proposed analysis system and analysis process, ions in a wide variety of ion-containing liquid media can be qualitatively and/or quantitatively determined in an easy and inexpensive way.