Bisphenol A Detection Using Colorimetric Test Strips and Image Analysis
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Solution Overview
Problem
Conventional methods for detecting Bisphenol A are expensive, complex, and not suitable for on-site, cost-effective, or quick estimation, especially for low levels, as they require specialized equipment like fluorescence spectrophotometers or involve tedious enzyme selection processes.
Innovation Solution
A method using a ferric agent to react with Bisphenol A, producing RGB color changes measured by Image J software, with Orange data mining tool for quantitative estimation, enabling simple, low-cost, in situ detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional methods such as GC/MS, LC/MS, or fluorescence spectrophotometry are used for BPA detection, then measurement precision is improved, but device complexity and cost increase significantly
Solution Approach 1:
The patent uses a colorimetric reaction that produces visible color changes as a simplified copy of the complex spectroscopic detection methods. Instead of requiring sophisticated instruments to detect BPA, the method creates a visual colorimetric signal that can be captured by simple imaging devices, thereby maintaining detection capability while dramatically reducing device complexity
Solution Approach 2:
The patent employs disposable test strips or simple reaction vessels with colorimetric reagents instead of expensive, complex instrumentation. These single-use or simple reusable components replace costly equipment like GC/MS or fluorescence spectrophotometers, achieving cost-effective BPA detection without requiring sophisticated devices
2Measurement precision
If conventional methods such as GC/MS or LC/MS are used for BPA detection, then measurement precision is improved, but cost increases significantly
Solution Approach 1:
The patent replaces expensive conventional analytical instruments with inexpensive colorimetric test strips or reaction systems. These low-cost alternatives use simple chemical reagents that produce detectable color changes, eliminating the need for costly GC/MS or LC/MS equipment while maintaining adequate detection precision for practical applications
Solution Approach 2:
The patent substitutes complex mechanical and electronic detection systems (GC/MS, LC/MS, fluorescence spectrophotometers) with a simple chemical colorimetric system. The detection is achieved through visual or digital image analysis of color changes, replacing expensive instrumental analysis with a low-cost chemical sensing approach
3Measurement precision
If fluorescence spectrophotometry is used for BPA detection, then measurement precision is improved, but ease of operation deteriorates due to specialized equipment requirements
Solution Approach 1:
The patent creates a visual copy of the fluorescence detection principle through colorimetric reactions. Instead of requiring excitation light sources and fluorescence detectors, the method uses simple color-changing reagents that can be observed with the naked eye or captured by standard digital cameras, making the operation as simple as taking a picture of the reaction
4Measurement precision
If aptamer-based detection methods are used for BPA detection, then measurement precision is improved, but device complexity and ease of operation worsen due to immobilization requirements
Solution Approach 1:
The patent uses simple, disposable test strips or reaction vessels with pre-loaded colorimetric reagents instead of complex aptamer immobilization systems. These single-use components eliminate the need for sophisticated surface chemistry and immobilization procedures, reducing method complexity while maintaining detection capability
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 method provides a cost-effective, efficient, and accurate means to quantify Bisphenol A levels using readily available tools, overcoming the limitations of expensive and complex existing techniques.
Implementation Method 1
Bisphenol A reacts with a ferric agent(s) to obtain a colour pertaining to Red, Green, Blue (RGB) colour intensity
Data Source
AI summary
A method for the estimation of trace amounts of Bisphenol A (BPA) in accordance with the present invention comprises reacting a sample containing BPA with a filter paper strip soaked in ferric agent(s), using an image processing software for measuring the mean Red, Green, and Blue (RGB) values, and calculating the amount of BPA using the algorithm in an open-source machine learning and data mining tool.