Electrochemical Sensor for Water Analysis
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Solution Overview
Problem
Current methods for monitoring water chemistry parameters such as free chlorine, total chlorine, total hardness, and total alkalinity in recreational and industrial water supplies are not simple, rapid, or cost-effective, often resulting in erroneous test results due to reactivity of chlorine species and human error in color change monitoring.
Innovation Solution
An electrochemical sensor with a non-conductive support and multiple electrodes, including a reference, counter, and working electrode, where the working electrode has a reagent composition applied directly to its surface for amperometric analysis, eliminating the need for intermediate layers and providing reproducible results.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If DPD test kits are used for chlorine detection, then the test can be performed in the field, but the results are erroneous due to reactivity of chlorine species and human error in color change monitoring
Solution Approach 1:
The patent replaces the manual color change monitoring method with an automated electrochemical sensor system. The sensor uses electrodes to detect chlorine species through electrochemical reactions, eliminating human error in color change interpretation while maintaining field deployability. The automated measurement system provides precise, objective readings without relying on visual assessment.
Solution Approach 2:
The patent changes the detection parameter from visual color change to electrical signal measurement. By converting the detection mechanism from optical (color change) to electrochemical (current/voltage measurement), the system achieves more precise and reliable results while maintaining ease of operation in field conditions.
2Ease of manufacture
If manual color change monitoring is used for water hardness and alkalinity testing, then simple reagents can be used, but human error leads to erroneous test results
Solution Approach 1:
The patent replaces manual visual monitoring with automated electrochemical detection. The sensor system uses electrodes to measure electrical properties changes during the reaction, eliminating human error in interpreting color changes while maintaining the simplicity of the test kit structure. The automation provides consistent, objective measurements.
Solution Approach 2:
The electrochemical sensor performs the measurement automatically without requiring human interpretation. The system self-evaluates the test results through automated signal processing, eliminating human error while keeping the overall system simple and easy to operate.
3Speed
If chlorine species are measured quickly due to their reactivity, then accurate measurements are difficult to obtain, but waiting for stable readings compromises the reliability of residual chlorine measurement
Solution Approach 1:
The patent uses electrochemical detection to measure chlorine species rapidly and accurately. The electrode-based system provides immediate quantitative readings without requiring visual stabilization, enabling both fast measurement and reliable results simultaneously through automated detection and signal processing.
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 electrochemical sensor offers a reliable and accurate means to detect and analyze water chemistry parameters, reducing human error and improving measurement precision, making it a more effective diagnostic tool for water quality management.
Implementation Method 1
The working electrode has a reagent composition containing a reagent for detecting an analyte applied directly to the second surface of the working electrode
Data Source
AI summary
An electrochemical sensor for the detection and analysis of an analyte in a solution is disclosed. The electrochemical sensor has an electrically non-conductive support; a plurality of electrodes on the support, each electrode having a first surface and an opposite second surface, said first surface facing towards the support and the second surface facing away from the support. The plurality of electrodes includes a reference electrode, a counter electrode, and a working electrode. The working electrode has a reagent composition containing a reagent for detecting an analyte applied directly to the second surface of the working electrode.